The list of basic regulatory documents regulating the quality of performance of work (provision of services) on the repair of passenger cars. Guests in the field of operation of the vehicle technical diagnostics of assembly units

19.10.2019

GOST 21624-81

Group T51.

State Standard of the SSR Union

Automotive Maintenance and Repair System

Requirements for operational manufacturing and maintainability of products

Motor Vehicle Maintenance and Repair System.
REQUIRMENTS FOR MAINTAINABILITY AND REPAIRABILITY OF ITEMS

OKP 45 1000.

Date of introduction 1983-01-01

By Decree of the State Committee of the USSR on standards of December 24, 1981 N 5619, the deadline was established from 1983-01-01

Instead of GOST 21624-76

Reprint. June 1987

This standard establishes requirements for products to ensure a given level of operational technological technological (ET) and maintainability (RP), as well as the values \u200b\u200bof the indicators of ET and RP, provided for by GOST 20334-81, for automotive equipment - all-wheel drive and not all-wheel drive cars (freight, passenger and buses), trailers and semi-trailers (hereinafter - products).

The standard does not apply to special and specialized products of automotive equipment.

Requirements for ET and RP products should be included in the technical task for the development or modernization of the product and the technical level map.

The terms applied in this standard and explanations to them are given in the reference application 1.

1. GENERAL PROVISIONS

1.1. Requirements for ensuring this and RP of automotive equipment are aimed at reducing the costs of time, labor and maintenance and repair and repair and improve the efficiency of their use during operation.

1.2. This standard regulates the values \u200b\u200bof the normalized indicators of ET and RP of automotive equipment.

1.3. Et and RP indicators of products should be set in the form of quantities:

the frequency of maintenance species in the mileage kilometers of the product;

specific operational laboriousness of maintenance (without daily) in man-hours per 1000 km of product mileage;

specific operational labor intensity of current repairs in man-hours per 1000 km of product mileage.

1.4. Values \u200b\u200bof all the indicators of ET and RP with maintenance And the current repairs are given for the first category of operating conditions and climatic areas with an adjustment coefficient of 1.0.

1.5. The frequency of maintenance (except daily), as well as the specific operational complexity of maintenance and current repairs for other categories of operating conditions and other climatic areas, taking into account the correction coefficients shown in the recommended Annex 2.

2. Requirements for the provision of operational technological and maintainability of products

2.1. The design and layout of the product and its component parts should ensure that all maintenance operations (MA) and the current repair (TR) with the minimum possible labor and material costs.

2.2. Common requirements for ensuring this and RP of automotive equipment are:

an increase in frequency of products;

improving the reliability of the product and its components;

ensuring access to the component parts of the product that requires that and tr;

ensuring the slightweight of the components of the product;

standardization and unification of the components of the product and operational materials;

reducing the number of product objects requiring regular maintenance;

reduction of the nomenclature and sizes of fasteners;

improving the anti-corrosion protection of the product, its components and fasteners;

ensuring access to composite parts requiring an anti-corrosion protection in operation;

providing control recovery when used for intended, maintenance and current repairs;

ensuring the adaptability of the product to the performance of washing, fastening, adjusting, lubricants, control and diagnostic and repair work;

ensuring adaptability to the execution of conversion and adjustment and measuring work;

ensuring the possibility of applying original design solutions and new materials;

ensuring the full geometric and functional interchangeability of the same type of components during maintenance and repair;

reducing the number of service personnel and needs in specialists with high levels qualifications by reducing and simplifying dismantling and installation, adjustment and other works.

3. Values \u200b\u200bof indicators

3.1. The values \u200b\u200bof the periodicity of the daily (EO), the first (TO-1) and the second (TO-2) maintenance specified in the technical documentation, and then on service books are shown in Table 1.

Table 1

The frequency of maintenance of automotive equipment
(I Category Operating Conditions)


Type of product	Periodicity of maintenance species
			Then on service books
		km, not less
Cars passenger	Once in the working day, regardless of the number of workers shifts
Buses
Cargo cars, buses based on trucks or using their main units
Trailers and semi-trailers
All-wheel drive cars

Note. This service frequency does not apply to the period of running a new car or unit for which smaller periodicity values \u200b\u200bcan be installed.

3.2. When establishing other types of maintenance, their frequency should be at least the second maintenance period.

3.3. Seasonal maintenance (CO) perform twice for calendar year Before the beginning of autumn-winter and spring-summer operation and combine with the next one.

The numerical value of the periodicity of the C is determined by the ratio annual Mileage to the number of CO.

The specific operational complexity of seasonal maintenance includes the indicator of the specific operational laboriousness of the maintenance.

3.4. The values \u200b\u200bof the normalized indicators of the ET and the RP of the non-receptacle and all-wheel drive cars are shown in Table 2-6.

table 2

Labor complexity of maintenance and current car repair
with wheel formula 4x2


Car class	Engine working volume, l	Mass (dry), kg	Operational labor intensity
				specific
				maintenance	current repairs
				chel.-h / thousand. KM
			no more
Especially small
	St. 1.2 to 1.8	St. 850 to 1150
Middle	St. 1.8 to 3.5	St. 1150 to 1500

Table 3.

Labor intensity of maintenance and current repair of buses


	Length, M.	Operational labor intensity
		one-time daily maintenance, person-h	specific
			maintenance	current repairs
			chel.-h / thousand. KM
		no more
Especially small

Middle
Large

Table 4.

Labor intensity of maintenance and current car repair
general purpose with wheel formula 4x2 and 6x4


Load capacity	Operational labor intensity
	one-time daily maintenance, person-h	specific
		maintenance	current repairs
		chel.-h / thousand. KM
	no more
Especially small

Average

Big
Especially big

Table 5.

Labor intensity of maintenance and current repair of trailers and semi-trailers


			Operational labor intensity
				specific
	Load capacity		one-time daily maintenance, person-h	maintenance	current repairs
				chel.-h / thousand. KM
			no more
Uniaxial trailers	Small and middle
Two-axis trailers	Middle and big
	Especially big	8.0 or more
Union semi-trailers	Middle and big
	Especially big	8.0 or more
Multi-axis semi-trailers (two-axis or more)	Especially big	8.0 to 16.0

Table 6.

Labor intensity of maintenance and current car repair
all-wheel drive single-sided with wheel formula 4x4 and 6x6


Load capacity		Operational labor intensity
		one-time daily maintenance, person-h	specific
			maintenance	current repairs
			chel.-h / thousand. KM
		no more
Especially small	St. 0.3 to 1.0
	St. 1.0 to 3.0
Average	St. 3.0 to 4.0
	St. 4.0 to 6.0
Big	St. 6.0 to 8.0

3.5. The values \u200b\u200bof the one-time complexity of the EO and the specific labor intensity of TR, as well as the specific operational labor intensity, then (without daily) specified in the technical documentation for basic models General-purpose automotive equipment in the first category of operating conditions should not exceed the values \u200b\u200bgiven in Table 2-5.

3.6. The values \u200b\u200bof the one-time operational complexity of the EO, as well as the specific operational labor intensity, the TR for all-wheel drive cars should not exceed the values \u200b\u200bshown in Table 6.

Appendix 1 (Reference). Explanations to the Terms applied in this standard

ATTACHMENT 1
Reference


Term	Explanation
1. Special and specialized automotive products	According to GOST 21398-75 *
2. Common car	According to the "general classifier of industrial and agricultural products", "Higher Classifications", class 45 - "Automotive Industry Products". Approved by the USSR states 12.12.1974
3. Daily maintenance (EE), first maintenance (TO-1), second maintenance (TO-2), seasonal maintenance (CO)	Complexes of operations, meaning under these titles in the instructions for using products of specific stamps, developed by manufacturers of products in accordance with GOST 2.601-68 **
4. Current Repair (Tr)	According to GOST 18322-78
5. Basic model	The product was conditionally accepted for the main thing in the design and design of design documentation and in the organization of production
6. Operational labor intensity	According to GOST 21623-76

_______________
* Replaced GOST 21398-89 GOST 21398-89 does not work. GOST R 52280-2004 is valid;
** GOST 2.601-95 is replaced. In the territory of the Russian Federation GOST 2.601-95 does not work. GOST 2.601-2006. - Notes of the database manufacturer.

Appendix 2 (recommended). Correction coefficients of performance of operational technological and maintainability depending on the category of operating conditions

Table 1

Characteristics of the operating conditions of products and the corresponding categories


	Working conditions
	1. Automobile roads I, II, III technical Categories Outside the suburban zone on flat, weakly-grayscale and hilly areas having cement concrete and asphalt concrete coating
	1. Automobile roads I, II, III technical categories outside the suburban area in highland, as well as in small towns and in the suburban zone (in all types of relief, except for mountain), having cement concrete and asphalt concrete types of coatings.
	2. Automobile roads I, II, III of technical categories outside the suburban zone (in all types of relief, except for the mountain), as well as in small towns and in the suburban area on flat terrain coated with bitumenineral mixtures.
	3. Automobile roads III, IV technical categories outside the suburban zone having rubbed and gravel coatings in all types of relief, except mountainous and mountain
	1. Automobile roads I, II, III technical categories outside the suburban zone, car roads In small towns and in the suburban zone (mountainous area), as well as in large cities having cement concrete and asphalt concrete coatings.
	2. Automobile roads I, II, III technical categories outside the suburban zone (mountainous area), road roads in small towns and in the suburban zone (in all types of relief, in addition to flat), as well as in large cities (in all types of relief, In addition to mountain), having coatings from bitumenineral mixtures.
	3. Automobile roads III, IV technical categories outside the suburban area in mountainous and mountainous areas, roads in the suburban area and streets of small towns, streets of large cities (all types of relief, except mountainous and mountain), having rubbed and gravel coatings.
	4. Automobile roads III, IV, V technical categories outside the suburban area, road roads in the suburban area and streets of small cities, streets of large cities (flat terrain), having coatings from a cobblestone and bridal stone, as well as coatings from soils treated with knitry Materials.
	5. Intrapanery automotive roads with advanced coatings.
	6. WINDERS.
	1. Streets of large cities having coatings from bitumenineral mixes (mountainous areas), rubbed and gravel coatings (mountainous and mountainous terrain), coatings from a cobblestone and bridal stone and from soils treated with knitting (all types of relief, except for flat) materials.
	2. Automobile roads of the V technical category outside the suburban area, road roads in the suburban area and streets of small cities (flat terrain), having a soil unqualified or reinforced with local coating.
	3. Forest and forestry ground roads in good condition
	1. Natural ground roads, internal roads in rural areas, intra-rail and recalled roads, temporary driveways to various kinds of construction sites and sand, clay, stone, and the like. in periods when there is a movement

table 2

Maintenance Periodicity Adjustment Coefficients
and specific operational laboriousness of the current repair depending
on the category of operating conditions of automotive equipment


	Correction coefficients
	the frequency of maintenance, not less	specific operational laboriousness of current repairs, no more

Table 3.

The coefficients of adjusting the frequency of maintenance and specific
laboriousness of current repair depending on the natural climatic
regions of operation of automotive equipment


Climatic area	Correction ratio
	maintenance periodicity	specific laboriousness of current repairs
Moderately cold
Moderately warm, moderate-warm wet, warm wet
Roast dry, very hot dry
Cold (from the middle time of January of the month from minus 15 to minus 20 °)
Cold (from the middle time of January of the month from minus 20 to minus 35 °)
Very cold (with the middle time of January of the month from minus 35 ° and below)

Note. When working with automotive equipment under conditions with high aggressiveness ambient The periodicity value is reduced by 10%, and the value of the specific labor intensity of TPs increase by 10%.

The work with high aggressiveness of the environment equates the work of products of automotive equipment for the transport of chemical goods causing intensive corrosion.

Appendix 3 (recommended). Recommendations for the maintenance and operational technologicality of products and their components

1. Construction of assembly units of products

1.1. Units and parts that are subjected to frequent dismantling in operation should be easily gradual.

1.2. Frequently removed lid lid must be installed on quick-consuming clamps that do not allow spontaneous opening.

1.3. For cables and driving control systems, providing for guides from materials that do not need lubricant.

1.4. Provide on products with pneumatic control systems the possibility of pumping and pumping tires from the pneumatic system.

1.5. Ensure installation on wheels of trucks of greater lifting capacity and buses of signaling devices for reducing tire pressure to the minimum permissible value.

1.6. External body forms passenger cars, buses, cargo vehicles type van, trailer and semi-trailer perform adapted to mechanized outdoor washing On brush machines.

1.7. To ensure the possibility of unhindered passage of detergent brushes with a mechanized sink of products by its protruding on the surface of the body, parts and devices (windshield wipers, rear-view mirrors, antennas, additional pharmaceans, signals, etc.).

1.8. Apply the types of buses coating and the method of its attachment, providing the possibility of the cabin hose wash without penetrating the water from the panel and under the floor covering. Provide the possibility of a complete drain of water accumulated on the floor when washing.

1.9. Provide the constructive design of the cabin of buses and its internal equipment, which provides the possibility of mechanized cleaning, including washing and special processing of disinfecting compositions.

1.10. On products C. carburetor engines Installing devices that exclude water from entering the engine electrical equipment with a mechanized and hose wash.

1.11. Capacity and tanks, levels of working fluids in which must be monitored (engine lubrication system, cooling system, oil carriages, tanks with brake fluid etc.), supply easily observed level indicators (probes, transparent windows, remote pointers, etc.). Provide if necessary, the installation of embedded devices, allowing to monitor the level of fluid directly on the instrument panel or allowing it to be easily and quickly monitored.

1.12. In the designs of the fuel system and other devices in which are used special fluids Or oil, to provide for the possibility of a complete drain of liquid from all tanks and working volumes.

1.13. Ensure the easume of hydro and pneumatic actuators that feed the components of the product.

1.14. In cases where, according to the terms of the structural solutions, refueling products with fuel, water, oil and other technical liquids It is impossible from the ground level, to ensure the installation of embedded devices for accessing the refueling places, as well as to the wind and rear windows.

1.15. Assembly units and mechanisms, the mass of which exceeds 30 kg, making adapted to the removal and transportation by lifting facilities (provide for captures, rhlybolt, eyelashes, etc.).

1.16. Methods for fastening the spare wheel on products should provide the ability to install it and remove with one person with a required force not exceeding 500 H (50 kgf).

1.17. On the products with the bearing body, it is to provide structurally decorated places that should provide the possibility of hanging them by a jack at least than at four points, as well as when performing maintenance and current repair - lifts; For frameworks to provide the possibility of hanging by lifts and jacks under the bridges.

1.18. On passenger cars and buses of all types, apply self-regulating brakes.

1.19. Apply easy-sensitive brake drums that allow inspection and maintenance of brake mechanisms without dismantling the wheel hubs.

1.20. The control body of the condensate of air cylinders of the brake actuator system is located in a convenient location.

1.21. Provide a simple and easy replacement or purification of the moisture meter separator of the pneumatic brake drive system.

1.22. Provide the possibility of free access to the valves of twin-wheel tires by installing the valves of the valves.

1.23. Rechargeable batteries with open inter-accumulator jumpers in the place of their installation on the product cover, reliably protecting their upper part from dust, moisture and dirt, or placed in a closed ventilated compartment.

1.24. In the electrical system of products, install plug connectors that allow you to remove the main nodes and lighting devices without developing contact connections. Concentrate connectors in the form of grouped nodes.

1.25. In the electrical equipment of the products to establish a branched network of fuses that provide easy and quick troubleshooting in the system.

1.26. In the system of electrical equipment of all types of products, apply alternate current generators of the most promising design.

1.27. All types of products Equip the battery switches of batteries.

1.28. Provide easy and fast removal from the product of nodes and engine start assembers, as well as power systems, gases and cooling.

1.29. Provide free access to engine maintenance facilities by applying a folding cabin or hood-wing hinged block, decrease in the height of the wings, the use of light grateproof sidewalls of the hood.

1.30. Provide in the design of the product the possibility of applying and subsequent resumption in the operation of the anti-corrosion coating of the outer and internal surfaces of the closed cavities of the body elements subject to corrosion.

1.31. Provide the possibility of removing the head of the engine cylinder block directly to the product.

1.32. Provide in engine structures using magnetic flaps and plugs.

1.33. Provide for products the maximum possible expedient degree of unification according to assembly units and components, mechanisms, component equipment, on the placement of controls and measuring instruments.

2. Layout of assembly units

2.1. Taking the design and layout of assembly units of products that provide free access to all devices and details to be maintained and controlled.

2.2. Place the triggers of containers in places that provide free access to them and the possibility of producing liquids without loss and hitting the surface of the adjacent parts of the product.

2.3. Place the battery in places ensuring the ability to control the level and density of the electrolyte in each bank directly on the product.

3. Methods for fastening assembly units, fasteners

3.1. Types of fasteners of all product connections should be selected from the condition for applying the minimum amount of key sizes used.

3.2. The number of sizes of "turnkey" places of threaded plugs of drain and fuse bayoids of containers should be no more than three.

3.3. Provide free access to a mechanized tool or dynamometric keys to fixing connections of a large or normalized tightening force. To the rest of fixing connections to provide the necessary access to the fastener tool.

3.4. Provide the ability to perform work on the suspension of bolted connections by one person.

3.5. All fasteners exposed to moisture should have an anti-corrosion coating.

3.6. Apply, where possible, fastening parts made from plastics.

3.7. Apply self-locking fasteners or other means that exclude self-erase, in the most responsible product connections, primarily related to ensuring traffic safety.

3.8. Observe the multiplicity of the frequency of fasteners of the product maintenance periodicity.

4. Lubrication

4.1. Provide friction nodes that do not require lubrication.

4.2. The number of brands applied lubricants (excluding substitutes) should be no more than four for passenger cars and six - for trucks and general-purpose buses.

4.3. Provide the selection of the type of construction, location and method of installing press-oils, ensuring the possibility of using existing standard lubricants with one type of lubricant tip.

4.4. The design and layout of the bulk holes of the cards of units and nodes should provide the possibility of oil suction, flushing of crankcases and fill with fresh oil through the filler neck.

5. Anticorrosion Protection and Coloring

5.1. Anti-corrosion protection of cabin, bodies and their painting in the manufacture should provide:

lack of rust appearance on external surfaces for at least three years; *
________________

lack of Yazvin and end-to-end corrosion damage for at least five years. *
________________
* For the first category of operating conditions and climatic areas with an adjustment coefficient of 1.0.

5.2. The life of paint coatings of the bodies must comply with the resource of a car or body (cab) to overhaul.*
________________
* For the first category of operating conditions and climatic areas with an adjustment coefficient of 1.0.

5.3. Provide access (holes, channels, hatches, etc.) to the inner surfaces of the body and cabins, subject to corrosion, to control and conduct anti-corrosion measures to operate.

5.4. Provide installation of traffic jams, hatches and other devices that provide drainage from the cavities of the moisture and condensate.

5.5. Exclude the places of the accumulation of dirt (niches, traps, etc.) on the surfaces of the body and cabins, to provide a good fitness of the bodies and cabins to the washing and anti-corrosion work.

5.6. All fasteners, metal pipelines, traction subject to moisture should have an anti-corrosion coating.

6. Technical diagnostics assembly units of the product

6.1. In the designs of the assembly units of the product, install special devices and devices for connecting standard diagnostic equipment.

6.2. Connecting connectors to connect the required diagnostic equipment installed directly on the product so that they do not make it difficult to access individual aggregates and assembly units and did not prevent the installation and dismantling work during maintenance and the current repair of the product. Concentrate equipment connecting the equipment.

6.3. In the systems of hydro and pneumatic operation of the product mechanism to provide devices to monitor the technical condition of systems without disassembling and removing them from the product.

6.4. Taking the type of engine block head and the location of the winding candles and nozzles, ensuring the possibility of measuring the size of the compression in the cylinders on a full-digit product.

6.5. In the designs of the brakes of trucks and buses, provide for the possibility of visual control of the thickness of friction linings brake shoes Without disassembly (shells closed with light grades, etc.) or the presence of a signaling device for the limit wear of parts.

Electronic document text
prepared CJSC Codex and drilled by:
official edition
M.: Publishing standards, 1987

All documents presented in the catalog are not their official edition and are intended exclusively for informational purposes. Electronic copies of these documents can be distributed without any restrictions. You can place information from this site on any other site.

State Standard of the SSR Union

Automotive Maintenance and Repair System

Requirements for operational manufacturing and maintainability of products

Motor Vehicle Maintenance and Repair System.

Requirements for MaintainAinability and Repairability of Items

GOST 21624-81 instead of GOST 21624-76

Resolution of the USSR State Committee on Standards of December 24, 1981 No. 5619 The deadline is established

from 01/01/83.

Failure to comply with the standard is prosecuted by law.

This standard establishes the requirements for products to provide a given level of operational technological (ET) and maintainability (RP), as well as the values \u200b\u200bof ET and RP indicators, provided for by GOST 20334-81, for products of automotive equipment - all-wheel drive and non-receiving cars (cargo, passenger and buses ), trailers and semi-trailers (hereinafter - products).

The standard does not apply to special and specialized products of automotive equipment.

Requirements for ET and RP products should be included in the technical task for the development or modernization of the product and the technical level map.

Terms used in this standard and explanations to them are given in the reference.

2. Requirements for the provision of operational technological and maintenance of the product

2.1. The design and layout of the product and its component parts should ensure that all maintenance operations (MA) and the current repair (TR) with the minimum possible labor and material costs.

2.2. Common requirements for ensuring this and RP of automotive equipment are:

an increase in frequency of products;

improving the reliability of the product and its components;

ensuring access to the component parts of the product that requires that and tr;

ensuring the slightweight of the components of the product;

standardization and unification of the components of the product and operational materials;

reducing the number of product objects requiring regular maintenance;

reduction of the nomenclature and sizes of fasteners;

improving the anti-corrosion protection of the product, its components and fasteners;

ensuring access to composite parts requiring an anti-corrosion protection in operation;

providing control recovery when used for intended, maintenance and current repairs;

ensuring the adaptability of the product to the performance of washing, fastening, adjusting, lubricants, control and diagnostic and repair work;

ensuring adaptability to the execution of conversion and adjustment and measuring work;

ensuring the possibility of applying original design solutions and new materials;

ensuring the full geometric and functional interchangeability of the same type of components during maintenance and repair;

reducing the number of service personnel and needs in specialists with high qualifications by reducing and simplifying dismantling and installation, adjustment and other works.

3. Values \u200b\u200bof indicators

3.1. The values \u200b\u200bof the periodicity of the daily (EO), the first (TO-1) and the second (TO-2) maintenance specified in the technical documentation, and then on the service books are shown in Table. one.

Labor intensity of maintenance and current car repair with wheel formula 4x2

Car class	Engine working volume, l	Mass (dry), kg	Operational labor intensity
			middle daily maintenance, chel.-Ch	specific
				maintenance	current repairs
				chel.-h / thousand km
			no more
Especially small	Up to 1.2.	Up to 850.	0,25	0,70
Small	St. 1.2 to 1.8	St. 850 to 1150	0,35	0,80
Middle	St. 1.8 to 3.5	St. 1150 to 1500	0,50	1,00

Table 3.

Labor intensity of maintenance and current repair of buses

Class	Length, M.	Operational labor intensity
			specific
			maintenance	current repairs
			chel.-h / thousand km
		no more
Especially small	Up to 5.0	0,50	2,00
Small	St. 6.0 to 7.5	0,70	2,50
Middle	St. 8.0 to 9.5	0,95	3,00
Large	St. 10.5 to 12.0	1,20	3,90

Table 4.

Work intensity of maintenance and current repair of truck cars with wheel formula 4 × 2 and 6 × 4

Load capacity	Operational labor intensity
	one-time daily maintenance, person-h	specific
		maintenance	current repairs
		chel.-h / thousand. KM
	no more
Especially small	From 0.5 to 1.0	0,20	0,90
Malaya	St. 1.0 to 3.0	0,40	1,20
Average	St. 3.0 to 4.0	0,55	1,40
Average	St. 4.0 to 5.0	0,55	1,80
Big	St. 5.0 to 8.0	0,65	2,00
Especially big	St. 8.0 to 10.0	0,80	2,50
Especially big	St. 10.0 to 16.0	1,00	2,60

3.6. The magnitudes of the one-time operational complexity of the EO, as well as the specific operational labor intensity, the trial for all-wheel drive cars should not exceed the values \u200b\u200bgiven in Table. .

ATTACHMENT 1
Reference
Explanations to the Terms applied in this standard

Term	Explanation
1. Special and specialized automotive products	According to GOST 21398-75
2. Common car	According to the "general classifier of industrial and agricultural products", "Higher Classifications", class 45 - "Products of the Automotive Industry". Approved by the USSR states 12.12.1974
3. Daily maintenance (EE), first maintenance (TO-1), second maintenance (TO-2), seasonal maintenance (CO)	Complexes of operations, meaning under these names in the instructions for the operation of products of specific stamps, developed by manufacturers of products in accordance with GOST 2.601-68
4. Current Repair (Tr)
5. Basic model	The product was conditionally accepted for the main thing in the design and design of design documentation and in the organization of production
6. Operational labor intensity	According to GOST 21623-76

Appendix 2.
Recommended
Correction coefficients of performance of operational technological and maintainability depending on the category of operating conditions

Table 1

Characteristics of the operating conditions of products and the corresponding categories

	Working conditions
	1. Automobile roads I, II, III technical categories outside the suburban zone on flat, weakly-grayscale and hilly terrain having cement concrete and asphalt concrete coating
	1. Automobile roads I, II, III technical categories outside the suburban area in highland, as well as in small towns and in the suburban zone (in all types of relief, except for mountain), having cement concrete and asphalt concrete types of coatings. 2. Automobile roads I, II, III of technical categories outside the suburban zone (in all types of relief, except for the mountain), as well as in small towns and in the suburban area on flat terrain coated with bitumenineral mixtures. 3. Automobile roads III, IV technical categories outside the suburban zone having rubbed and gravel coatings in all types of relief, except mountainous and mountain
	1. Automobile roads I, II, III technical categories outside the suburban area, road roads in small towns and in the suburban area (mountainous area), as well as in large cities having cement concrete and asphalt concrete coatings. 2. Automobile roads I, II, III technical categories outside the suburban zone (mountainous area), road roads in small towns and in the suburban zone (in all types of relief, in addition to flat), as well as in large cities (in all types of relief, In addition to mountain), having coatings from bitumenineral mixtures. 3. Automobile roads III, IV technical categories outside the suburban area in mountainous and mountainous areas, roads in the suburban area and streets of small towns, streets of large cities (all types of relief, except mountainous and mountain), having rubbed and gravel coatings. 4. Automobile roads III, IV, V technical categories outside the suburban area, road roads in the suburban area and streets of small cities, streets of large cities (flat terrain), having coatings from a cobblestone and bridal stone, as well as coatings from soils treated with knitry Materials. 5. Intrapanery automotive roads with advanced coatings. 6. WINDERS.
	1. Streets of large cities having coatings from bitumo-mineral mixes (mountainous areas), rubbed and gravel coatings (highlated and mountainous areas), coatings from a cobblestone and brushed stone and from soils treated with knitting (all types of relief, except for flat) materials . 2. Automobile roads of the V technical category outside the suburban area, road roads in the suburban area and streets of small cities (flat terrain), having a soil unqualified or reinforced with local coating. 3. Forest and forestry ground roads in good condition
	1. Natural ground roads, internal roads in rural areas, intraference and recalled roads, temporary driveways to various kinds of construction sites and sand, clay, stone, etc. during periods, when there is a movement

table 2

The coefficients of adjusting the frequency of maintenance and specific operational laboriousness of the current repair depending on the category of operating conditions of automotive equipment

Table 3.

The coefficients of adjusting the frequency of maintenance of the specific labor intensity of the current repair depending on the natural and climatic regions of the operation of automotive vehicles

Climatic area	Correction ratio
Climatic area	maintenance periodicity	specific laboriousness of current repairs
Moderately cold
Moderately warm, moderate-warm wet, warm wet
Roast dry, very hot dry
Cold (from the middle season of January of the month from minus 15 to minus 20r)
Cold (from the middle season of January of the month from minus 20 to minus 35 °)
Very cold (with the middle time of January of the month from minus 35 ° and below)

Note . When performing automotive equipment under conditions with high environmental aggressiveness, the value of periodicity is reduced by 10%, and the value of the specific labor intensity of TPs increase by 10%.

The work with high aggressiveness of the environment equates the work of products of automotive equipment for the transport of chemical goods causing intensive corrosion.

Appendix 3.
Recommended
Recommendations for the maintenance and operational technologicality of products and their components

1. Construction of assembly units of products

1.1. Units and parts that are subjected to frequent dismantling in operation should be easily gradual.

1.2. Frequently removed covers of hatches must be installed on quick-consuming clips that do not allow spontaneous opening.

1.3. For cables and driving control systems, providing for guides from materials that do not need lubricant.

1.4. Provide on products with pneumatic control systems the possibility of pumping and pumping tires from the pneumatic system.

1.5. Provide installation on wheels of trucks of heavy loading capacity and buses of signaling devices for reducing tire pressure to the minimum permissible value.

1.6. The external forms of the body of passenger cars, buses, cargo vehicles of the van type, trailer and semi-trailer are performed adapted to the mechanized outer wash on the brush machines.

1.10. On products with carburetor engines, install devices that exclude water from entering the engine electrical equipment with a mechanized and hose sink.

1.11. Capacity and tanks, levels of working fluids in which the engine must be monitored (engine lubrication system, cooling system, oil carriages, tanks with brake fluid, etc.), supply easily observed level indicators (probes, transparent windows, remote pointers, etc.) . Provide if necessary, the installation of embedded devices, allowing to monitor the level of fluid directly on the instrument panel or allowing it to be easily and quickly monitored.

1.12. In the structures of the fuel system and other devices in which special liquids or oil are used, it is possible to provide a complete drain of liquid from all tanks and working volumes.

1.13. Ensure the easume of hydro and pneumatic actuators that feed the components of the product.

1.14. In cases where, according to the terms of the structural solutions for the editing of products with fuel, water, oil and other technical fluids, it is impossible from the ground level, to ensure the installation of built-in devices to access the refueling, as well as to the wind and rear windows.

1.15. Assembly units and mechanisms, the mass of which exceeds 30 kg, making adapted to the removal and transportation by lifting facilities (provide for captures, rhlybolt, eyelashes, etc.).

1.16. Methods for fastening the spare wheel on products should provide the ability to install it and remove with one person with a required force not exceeding 500 H (50 kgf).

1.17. On the products with the bearing body, it is to provide constructive decorated places that should provide the possibility of hanging them by a jack at least than in four points, as well as when performing maintenance and current repairs - lifts: for frameworks to provide the possibility of hanging lifts and jacks for bridges.

1.18. On passenger cars and buses of all types, apply self-regulating brakes.

1.19. Apply light grapple brake drums that allow you to inspect the maintenance of brake mechanisms without dismantling the wheel hubs.

1.20. The control body of the condensate of air cylinders of the brake actuator system is located in a convenient location.

1.21. Provide a simple and easy replacement or purification of the moisture meter separator of the pneumatic brake drive system.

1.22. Provide the possibility of free access to the valves of twin-wheel tires by installing the valves of the valves.

1.23. Rechargeable batteries with open inter-accumulator jumpers in the place of their installation on the product with a cover, reliably protecting their upper part from dust, moisture and dirt, or placed in a closed ventilated compartment.

1.25. In the electrical equipment of the products to establish a branched network of fuses that provide easy and quick troubleshooting in the system.

1.26. In the system of electrical equipment of all types of products, apply alternate current generators of the most promising design.

1.27. All types of products Equip the battery switches of batteries.

1.28. Provide easy and fast removal from the product of nodes and engine start assembers, as well as power systems, gases and cooling.

1.29. Provide free access to engine maintenance facilities by applying a folding cabin or hood "hood-wings", decrease in the height of the wings, the use of light grateproof sides of the hood.

1.30. Provide in the design of the product the possibility of applying and after the past resumption to the operation of the anti-corrosion coating of the outer and internal surfaces of the closed cavities of the body elements subject to corrosion.

1.31. Provide the ability to remove the engine cylinder block directly to the product.

1.32. Provide in the designs of engines the use of magnetic shield and plugs.

2. Layout of assembly units

2.1. Taking the design and layout of assembly units of products that provide free access to all devices and details to be maintained and controlled.

2.2. Place the triggers of containers in places that provide free access to them and the possibility of producing liquids without loss and hitting the surface of the adjacent parts of the product.

2.3. Place the battery in places ensuring the ability to control the level and density of the electrolyte in each bank directly on the product.

3. Methods for fastening assembly units, fasteners

3.1. Types of fasteners of all product connections should be selected from the condition for applying the minimum amount of key sizes used.

3.2. The number of sizes of "turnkey" places of threaded plugs of drainage and filling bays of containers should be no more than three.

3.4. Provide the ability to perform work on the suspension of bolted connections by one person.

3.5. All fasteners exposed to moisture should have an anti-corrosion coating.

3.6. Apply, where possible, fastening parts made from plastics.

3.7. Apply self-locking fasteners or other means that exclude self-erase, in the most responsible product connections, primarily related to ensuring traffic safety.

3.8. Observe the multiplicity of the frequency of fasteners of the product maintenance periodicity.

4. Lubrication

4.1. Provide friction nodes that do not require lubrication.

4.2. The number of grades of applicable lubricants (excluding substitutes) must be no more than four for passenger cars and six - for trucks and general-purpose buses.

4.3. Provide the selection of the type of construction, location and method of installing press-oils, ensuring the possibility of using existing standard lubricants with one type of lubricant tip.

4.4. The design and layout of the bulk holes of the cards of units and nodes should provide the possibility of oil suction, flushing of crankcases and fill with fresh oil through the filler neck.

5. Anticorrosion Protection and Coloring

5.1. Anti-corrosion protection of cabin, bodies and their painting in the manufacture should provide:

lack of rust appearance on external surfaces for at least three years; *

lack of Yazvin and end-to-end corrosion damage for at least five years. *

5.2. The life of paintwork of bodyworks must correspond to a resource of a car or body (cab) to overhaul. *

5.3. Provide access (holes, channels, hatches, etc.) to the inner surfaces of the body and cabins, subject to corrosion, to control and conduct anti-corrosion measures to operate.

5.4. Provide installation of traffic jams, hatches and other devices that provide drainage from the cavities of the moisture and condensate.

5.5. To eliminate the place of cluster of dirt (niche, traps, etc.) on the surfaces of the body and cabin, to provide a good fitness of the bodies and cabins to the holding of washing and anti-corrosion work.

5.6. All fasteners, metal pipelines, traction subject to moisture should have an anti-corrosion coating.

6. Technical diagnostics of assembly units

6.1. In the designs of the assembly units of the product, install special devices and devices for connecting standard diagnostic equipment.

6.2. Connecting connectors to connect the required diagnostic equipment installed directly on the product so that they do not make it difficult to access individual aggregates and assembly units and did not prevent the installation and dismantling work during maintenance in the current product repair. Concentrate places for equipment connections.

6.5. In the designs of the brakes of trucks and buses, it is possible to provide visual control of the thickness of the friction pads of the brake pads without disassembly (shells closed with light graded plugs, etc.) or the presence of a signaling device about the limiting wear of parts.

Document's name:
Document Number:	21624-81
Document type:	GOST
Accepted	State Standard of the USSR
Status:	Suitable
Published:	Official edition
Date of adoption:	December 24, 1981.
Start date:	January 01, 1983.
Editorial date:	June 1, 1987.

GOST 21624-81 System of maintenance and repair of automotive equipment. Requirements for operational manufacturing and maintainability of products

GOST 21624-81

Group T51.

State Standard of the SSR Union

Automotive Maintenance and Repair System

Requirements for operational manufacturing and maintainability of products

Motor Vehicle Maintenance and Repair System.
REQUIRMENTS FOR MAINTAINABILITY AND REPAIRABILITY OF ITEMS

OKP 45 1000.

Date of introduction 1983-01-01

By Decree of the State Committee of the USSR on standards of December 24, 1981 N 5619, the deadline was established from 1983-01-01

Instead of GOST 21624-76

Reprint. June 1987

This standard establishes the requirements for products to provide a given level of operational technological (ET) and maintainability (RP), as well as the values \u200b\u200bof ET and RP indicators, provided for by GOST 20334-81, for products of automotive equipment - all-wheel drive and non-receiving cars (cargo, passenger and buses ), trailers and semi-trailers (hereinafter - products).

The standard does not apply to special and specialized products of automotive equipment.

Requirements for ET and RP products should be included in the technical task for the development or modernization of the product and the technical level map.

The terms applied in this standard and explanations to them are given in the reference application 1.

1. GENERAL PROVISIONS

1.2. This standard regulates the values \u200b\u200bof the normalized indicators of ET and RP of automotive equipment.

1.4. The values \u200b\u200bof all indicators of ET and RP with maintenance and current repairs are given for the first category of operating conditions and climatic areas with an adjustment coefficient of 1.0.

2. Requirements for the provision of operational technological and maintainability of products

2.1. The design and layout of the product and its component parts should ensure that all maintenance operations (MA) and the current repair (TR) with the minimum possible labor and material costs.

2.2. Common requirements for ensuring this and RP of automotive equipment are:

an increase in frequency of products;

improving the reliability of the product and its components;

ensuring access to the component parts of the product that requires that and tr;

ensuring the slightweight of the components of the product;

standardization and unification of the components of the product and operational materials;

reducing the number of product objects requiring regular maintenance;

reduction of the nomenclature and sizes of fasteners;

improving the anti-corrosion protection of the product, its components and fasteners;

ensuring access to composite parts requiring an anti-corrosion protection in operation;

providing control recovery when used for intended, maintenance and current repairs;

ensuring the adaptability of the product to the performance of washing, fastening, adjusting, lubricants, control and diagnostic and repair work;

ensuring adaptability to the execution of conversion and adjustment and measuring work;

ensuring the possibility of applying original design solutions and new materials;

ensuring the full geometric and functional interchangeability of the same type of components during maintenance and repair;

reducing the number of service personnel and needs in specialists with high qualifications by reducing and simplifying dismantling and installation, adjustment and other works.

3. Values \u200b\u200bof indicators

Table 1

The frequency of maintenance of automotive equipment
(I Category Operating Conditions)


Type of product	Periodicity of maintenance species
			Then on service books
		km, not less
Cars passenger	Once in the working day, regardless of the number of workers shifts
Buses
Cargo cars, buses based on trucks or using their main units
Trailers and semi-trailers
All-wheel drive cars

Note. This service frequency does not apply to the period of running a new car or unit for which smaller periodicity values \u200b\u200bcan be installed.

3.2. When establishing other types of maintenance, their frequency should be at least the second maintenance period.

3.3. Seasonal maintenance (CO) perform twice during the calendar year before the beginning of autumn-winter and spring-summer exploitation and combine with the next one.

The numerical value of the periodicity C is determined by the ratio of the annual mileage to the amount of CO.

The specific operational complexity of seasonal maintenance includes the indicator of the specific operational laboriousness of the maintenance.

3.4. The values \u200b\u200bof the normalized indicators of the ET and the RP of the non-receptacle and all-wheel drive cars are shown in Table 2-6.

table 2

Labor complexity of maintenance and current car repair
with wheel formula 4x2


Car class	Engine working volume, l	Mass (dry), kg	Operational labor intensity
				specific
				maintenance	current repairs
				chel.-h / thousand. KM
			no more
Especially small
	St. 1.2 to 1.8	St. 850 to 1150
Middle	St. 1.8 to 3.5	St. 1150 to 1500

Table 3.

Labor intensity of maintenance and current repair of buses


	Length, M.	Operational labor intensity
		one-time daily maintenance, person-h	specific
			maintenance	current repairs
			chel.-h / thousand. KM
		no more
Especially small

Middle
Large

Table 4.

Labor intensity of maintenance and current car repair
general purpose with wheel formula 4x2 and 6x4


Load capacity	Operational labor intensity
	one-time daily maintenance, person-h	specific
		maintenance	current repairs
		chel.-h / thousand. KM
	no more
Especially small

Average

Big
Especially big

Table 5.

Labor intensity of maintenance and current repair of trailers and semi-trailers


			Operational labor intensity
				specific
	Load capacity		one-time daily maintenance, person-h	maintenance	current repairs
				chel.-h / thousand. KM
			no more
Uniaxial trailers	Small and middle
Two-axis trailers	Middle and big
	Especially big	8.0 or more
Union semi-trailers	Middle and big
	Especially big	8.0 or more
Multi-axis semi-trailers (two-axis or more)	Especially big	8.0 to 16.0

Table 6.

Labor intensity of maintenance and current car repair
all-wheel drive single-sided with wheel formula 4x4 and 6x6


Load capacity		Operational labor intensity
		one-time daily maintenance, person-h	specific
			maintenance	current repairs
			chel.-h / thousand. KM
		no more
Especially small	St. 0.3 to 1.0
	St. 1.0 to 3.0
Average	St. 3.0 to 4.0
	St. 4.0 to 6.0
Big	St. 6.0 to 8.0

3.5. The values \u200b\u200bof the one-time complexity of the EO and the specific laboriousness of TR, as well as the specific operational labor intensity, then (without daily), asked in technical documentation for basic models of general-purpose automotive equipment in the first category of operating conditions, should not exceed the values \u200b\u200bshown in Table 2-5 .

Appendix 1 (Reference). Explanations to the Terms applied in this standard

ATTACHMENT 1
Reference


Term	Explanation
1. Special and specialized automotive products	According to GOST 21398-75 *
2. Common car	According to the "general classifier of industrial and agricultural products", "Higher Classifications", class 45 - "Automotive Industry Products". Approved by the USSR states 12.12.1974
3. Daily maintenance (EE), first maintenance (TO-1), second maintenance (TO-2), seasonal maintenance (CO)	Complexes of operations, meaning under these titles in the instructions for using products of specific stamps, developed by manufacturers of products in accordance with GOST 2.601-68 **
4. Current Repair (Tr)	According to GOST 18322-78
5. Basic model	The product was conditionally accepted for the main thing in the design and design of design documentation and in the organization of production
6. Operational labor intensity	According to GOST 21623-76

Appendix 2 (recommended). Correction coefficients of performance of operational technological and maintainability depending on the category of operating conditions

Table 1

Characteristics of the operating conditions of products and the corresponding categories


	Working conditions
	1. Automobile roads I, II, III technical categories outside the suburban zone on flat, weakly-grayscale and hilly terrain having cement concrete and asphalt concrete coating
	1. Automobile roads I, II, III technical categories outside the suburban area in highland, as well as in small towns and in the suburban zone (in all types of relief, except for mountain), having cement concrete and asphalt concrete types of coatings.
	2. Automobile roads I, II, III of technical categories outside the suburban zone (in all types of relief, except for the mountain), as well as in small towns and in the suburban area on flat terrain coated with bitumenineral mixtures.
	3. Automobile roads III, IV technical categories outside the suburban zone having rubbed and gravel coatings in all types of relief, except mountainous and mountain
	1. Automobile roads I, II, III technical categories outside the suburban area, road roads in small towns and in the suburban area (mountainous area), as well as in large cities having cement concrete and asphalt concrete coatings.
	2. Automobile roads I, II, III technical categories outside the suburban zone (mountainous area), road roads in small towns and in the suburban zone (in all types of relief, in addition to flat), as well as in large cities (in all types of relief, In addition to mountain), having coatings from bitumenineral mixtures.
	3. Automobile roads III, IV technical categories outside the suburban area in mountainous and mountainous areas, roads in the suburban area and streets of small towns, streets of large cities (all types of relief, except mountainous and mountain), having rubbed and gravel coatings.
	4. Automobile roads III, IV, V technical categories outside the suburban area, road roads in the suburban area and streets of small cities, streets of large cities (flat terrain), having coatings from a cobblestone and bridal stone, as well as coatings from soils treated with knitry Materials.
	5. Intrapanery automotive roads with advanced coatings.
	6. WINDERS.
	1. Streets of large cities having coatings from bitumenineral mixes (mountainous areas), rubbed and gravel coatings (mountainous and mountainous terrain), coatings from a cobblestone and bridal stone and from soils treated with knitting (all types of relief, except for flat) materials.
	2. Automobile roads of the V technical category outside the suburban area, road roads in the suburban area and streets of small cities (flat terrain), having a soil unqualified or reinforced with local coating.
	3. Forest and forestry ground roads in good condition
	1. Natural ground roads, internal roads in rural areas, intra-rail and recalled roads, temporary driveways to various kinds of construction sites and sand, clay, stone, and the like. in periods when there is a movement

table 2

Maintenance Periodicity Adjustment Coefficients
and specific operational laboriousness of the current repair depending
on the category of operating conditions of automotive equipment


	Correction coefficients
	the frequency of maintenance, not less	specific operational laboriousness of current repairs, no more

Table 3.

The coefficients of adjusting the frequency of maintenance and specific
laboriousness of current repair depending on the natural climatic
regions of operation of automotive equipment


Climatic area	Correction ratio
	maintenance periodicity	specific laboriousness of current repairs
Moderately cold
Moderately warm, moderate-warm wet, warm wet
Roast dry, very hot dry
Cold (from the middle time of January of the month from minus 15 to minus 20 °)
Cold (from the middle time of January of the month from minus 20 to minus 35 °)
Very cold (with the middle time of January of the month from minus 35 ° and below)

Note. When performing automotive equipment under conditions with high environmental aggressiveness, the value of periodicity is reduced by 10%, and the value of the specific labor intensity of TPs increase by 10%.

The work with high aggressiveness of the environment equates the work of products of automotive equipment for the transport of chemical goods causing intensive corrosion.

Appendix 3 (recommended). Recommendations for the maintenance and operational technologicality of products and their components

1. Construction of assembly units of products

1.1. Units and parts that are subjected to frequent dismantling in operation should be easily gradual.

1.2. Frequently removed lid lid must be installed on quick-consuming clamps that do not allow spontaneous opening.

1.3. For cables and driving control systems, providing for guides from materials that do not need lubricant.

1.4. Provide on products with pneumatic control systems the possibility of pumping and pumping tires from the pneumatic system.

1.5. Ensure installation on wheels of trucks of greater lifting capacity and buses of signaling devices for reducing tire pressure to the minimum permissible value.

1.6. The external forms of the body of passenger cars, buses, cargo vehicles of the van type, trailer and semi-trailer are performed adapted to the mechanized outer wash on the brush machines.

1.10. On products with carburetor engines, install devices that exclude water from entering the engine electrical equipment with a mechanized and hose sink.

1.11. Capacity and tanks, levels of working fluids in which must be monitored (engine lubrication system, cooling system, oil carriages, tanks with brake fluid, etc.), supply easily observed level indicators (probes, transparent windows, remote pointers, etc.). Provide if necessary, the installation of embedded devices, allowing to monitor the level of fluid directly on the instrument panel or allowing it to be easily and quickly monitored.

1.12. In the structures of the fuel system and other devices in which special liquids or oil are used, it is possible to provide a complete drain of liquid from all tanks and working volumes.

1.13. Ensure the easume of hydro and pneumatic actuators that feed the components of the product.

1.14. In cases where, according to the terms of the structural solutions, refueling products with fuel, water, oil and other technical fluids is impossible from the ground level, ensure the installation of embedded devices to access the refueling, as well as to wind and rear windows.