PPC on MAZ 8 speed adjustment of gear. All about PPC MAZ

10.10.2019

In this article, we will tell you what functions performing a gearbox in the MAZ engine, we will make several recommendations for repair and will also be indicated by the switching scheme of MAZ with a divider, which you can consider in detail and explore.

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PURPOSE OF CAT

In the checkpoint, there is such an element as a gear, usually several of them, they are connected to the transmission control lever and it is due to their gear shift. The transmission is adjusted with the speed of the car.

That is, in other words, gear and there are transmissions. They have different sizes and different speed of rotation. In the process of work, one clins another. The system of such a work is due to the fact that the big gear clins less in size, rotation increases, and at the same time the speed of the car MAZ. In cases where a small gear clings big, speed, on the contrary, falls. The box consists of 4 speeds plus rear. The first is considered the lowest and with the addition of each transfer the car begins to move faster.

Located a box in the car MAZ between crankshaft and cardan. The first directly comes from the engine. The second is directly related to wheels and leads their operation. List of works that lead to speed adjustment:

The engine sets the movement of the drive and crankshaft.
Gearbox gears receive a signal and come into motion.
Using the gear lever, the driver choose the required speed.
The driver selected speed is transmitted to the cardan shaft, which causes the wheels into action.
The car continues its movement at the selected speed.

Device scheme

Diagram of the gearbox switching device with a divider on the masse is not easy, but it will help you very much when committing repair work. A stepped gearbox on the masse consists of elements such as crankcase, shafts, mortar, synchronizers, gear and other equally important elements.

9 speed

This unit is established, in most cases, trucks or cars that will be subject to high passability.

8 speed

This unit, like its predecessor, is popular among high-lifting machines.

5 speed

The most popular among passenger cars.

Want your box with a divider to keep in good condition long years? Then you need care and elementary checks. It is necessary to monitor the work of such elements as gears, a mortar, the control lever itself and so on. It happened so that the breakdown is no longer avoided? We will give you the following recommendations for independent repairs:

read in detail with the scheme and instructions of your mechanism;
in order to repair, first of all it is necessary to remove the box completely and only after you can start repairing;
after you pull it out, do not hurry to disassemble it completely, sometimes the problem is on the surface, pay special attention to all the details if you see a suspicious "behavior", then most likely the problem is in this element;
if you still have to disassemble the box completely, fold all the details in order of analysis, in order not to get confused at the time when you collect it back.

If you are not sure about your abilities, do not have certain skills and knowledge, contact the service center. Is there such an opportunity? What is never late to learn new and useful things. Ask questions in the comments, let you reveal and detailed answers.

This article covered the gear shift circuit for the MAZ of all kinds. We hope that the information came in handy in repairs. Let your box serve you for many years!

Video "Work of PPC"

You can see the principle of work mechanical box In this video.

MAA-5516 car gear drive, MAZ-5440, 64229, MAZ-5440, 64229, MAZ-54323, 54329 and YAMZ - 239 is shown in Figure 4.

During operation, if necessary, the transmission drive adjustments are used:

Procedure for adjusting the control of the PPC NMZ-239 cars MAZ-5516, MAZ-5440, 64229, MAZ-54323, 54329 Next:

Install lever 2 to neutral position;

Longitudinal movement of the plate 16 for the bolts released 17 to set the angle and the lever 1;

Changing the length of the thrust 3 set the angle.

With an insufficient progress of the plate 16 or the range of thrust adjustment 3 release the bolts 5, move or rotate the craving 6 relative to the shank 4, tighten the bolts 5 and repeat the adjustment of the angles A, as described above.

Angle A should be 80 °, angle in - 90 °.

Adjusting the blocking device of telescopic elements of the YAMZ-239 carboxes of cars MAZ-5516, MAZ-5440, 64229, MAZ-54323, 54329 to produce with a raised cabin as follows:

To fray finger 8 and disconnect craving 6 from the plug 9 gearbox drive lever;

Put the inner traction 6 until the protrusions stop the earrings 12 in the groove of the tip 15;

Holding the mechanism in a compressed state, screw the shank until the mechanism of the sleeve mechanism K) under the influence of the spring 11:

Tighten the locknut 13, check the clarity of the blocking mechanism. With a blocked mechanism of axial and angular backlash should be minimal.

In the unlocked position, the sleeve 10 is shifted to the left. The movement of the extension must be smooth, without jamming, and the locking mechanism must ensure a clear fixation of the traction extension in the original position.

When connecting the thrust 6 to fork 9, the hole in the earrings under the finger 8 should be located above the longitudinal axis of the traction 6. Adjust the drive to produce with a non-working engine.

When lifting the cabin, the oil under pressure from the cabin lifting pump through the hose 7 is fed into the cylinder of the locking device and the mechanism is unlocking.

After lowering the cabin to reliably fix the telescopic mechanism 6 in the locked position it is necessary to move the gear lever 1 forward along the car movement similar to the transmission. In this case, the mechanism is blocked and is ready for work.

MAZ-5516 car gear shift circuit, MAZ-5440, 64229, MAZ-54323, 54329 and YAMZ-239 cm. Figure 5.

Fig.4. Drive control gearbox YMZ car MAZ-5516, 64229, MAZ-54323, 54329

1 - lever; 2 - lever; 3,4-traction; 5,17- Bolt; 6 - thrust (telescopic mechanism); 7 - hose; 8 - finger; 9 - plug; 10 - sleeve; 11 - Spring; 12 - earring; 13 - lock nut; 14 - shank; 15 - tip; 16 -Plastin; 18 - Switch

MAZ-5516 car gear control drive, MAZ-5440, 64229, MAZ-54323, 54329 with MAN engine.

When managing the transmission of cars MAZ-5516, MAZ-5440, 64229, MAZ-54323, 54329 is guided by following:

The control of the main gearbox and the demultiplier is carried out using the CAT lever according to the diagram shown in Figure 19 (ZF PPC).

The transition of a slow range of the demultipator to the fast is carried out by the movement of the lever in the neutral position in the direction from itself, overcoming the plot of the retainer, from the rapid range to the slow - in the reverse order.

The divisor is controlled by the checkbox on the handle of the gearbox lever. The transition from a slow range (L) to the fast (s) and back is carried out by pressing the clutch pedal after the flag is translated into the appropriate position. Switching is possible without turning off the transmission to the main gearbox.

Adjusting the drive control box gearbox CAT MAZ-5516, MAZ-5440, 64229, MAZ-54323, 54329

In the process of operation, if necessary, the following adjustments of the transmission drive of cars MAZ-5516, MAZ-5440, 64229, MAZ-54323, 54329 for MAN engines are produced:

Adjustment of the lever position in the longitudinal direction;

Adjustment of the lever position in the transverse direction;

Adjusting the blocking device of telescopic drive elements.

The adjustment of the position of the lever 1 (Figure 7) in the longitudinal and transverse direction is made by moving and rotating the thrust 5 in the shank 6 when the bolts released 7.

In this case, the angle A should be 85 °, an angle e \u003d 90 °. Angle A can be adjusted and moving the plate 3 when the bolts released 2.

Fig.5. MAZ-5516 car gear shift circuit, MAZ-5440, 64229, MAZ-54323, 54329, YAMZ-239

M - slow range; B - fast range.

Fig.6. Transmission Scheme Gearbox ZF cars MAZ-5516, MAZ-5440, 64229, MAZ-54323, 54329

L is a slow range; S - fast range.

Fig.7. Drive control box MAZ-5516 car gear, MAZ-64229, MAZ-54323, 54329

1 - lever; 2, 7 - bolt; 3 - plate; 4 - hose; 5 - mechanism outcome; 6 - shank; 8 - Rugt

The drive of the MAZ-5440 car gearbox is shown in Figure 8.

Switching the main box is made by lever 1 remote control mechanism. An additional box is controlled by a range switch 18 located on the gear shift arm 1.

With the lower position of the range of the ranges, the fast range is turned on in an additional box, at the top - slow range.

In the process of operation, if necessary, the following adjustments of the PPC car MAZ-5440 are manufactured:

Adjustment of the angle of inclination of the lever 1 in the longitudinal direction;

Adjustment of the angle of tilt lever 1 in the transverse direction;

Adjusting the blocking device of the telescopic mechanism. To adjust the angle of inclination of the lever in the longitudinal direction follows:

Install the lever 2 to the neutral position, tightening the neutral position lock on the switching mechanism 20 (for KP YAMZ - 238m).

Neutral position of the gearbox gearbox MAZ-5440 Check the movement of the roller of the lever 2 in the axial direction by pressing the hand on it. At the same time, the roller should move by a value of 30 - 35 mm;

Loosen the tightening of the bolts 17 and the longitudinal movement of the plate 16 to set the angle "A" 90 degrees;

In case of insufficient progress, the plates 16 release the bolts 5, shift the craving 6 relative to the shank 4, tighten the bolts 5 and repeat the adjustment of the angle "A" by moving the plate 16.

The adjustment of the lever 1 in the transverse direction is carried out by changing the length of the transverse thrust 3 by disconnecting one of the tips with turning the nut of its attachment with the subsequent length adjustment in such a way that the lever 1 takes up a vertical position.

After adjustment, return the fixator of the neutral position to the starting position (for the PPC NMZ-238M).

The adjustment of the blocking device of the telescopic mechanism of the MAZ-5440 car gearbox should be performed as follows:

To fray your finger, unscrew the nut, remove the finger and disconnect the craving 6 from the plug 9 of the gear shift lever;

Weaken the lock nut 13 and turn the shank 14 until the thread stops;

Pull the inner traction 6 until the protrusions are stopped in the grooves of the tip 15;

Holding the mechanism in the compressed state, screw the shank 14 until the locking of the sleeve mechanism 10 under the influence of spring 11;

Tighten the locknut 13, check the clarity of the blocking mechanism. With a blocked mechanism of axial and angular backlash should be minimal. In a unlocked position (sleeve 10 is shifted to the right) the inner traction should be pushed into a return spring by 35 - 50 mm.

Further movement of the extension cord must be smooth, without jamming and the locking mechanism should ensure a clear fixation of the traction extension in the initial position.

You should not allow the bend and revenge the drive of the drive and the telescopic components. Adjusting the drive of the gearbox to produce when the engine is not working.

Fig.8. MAZ-5440 car gear control drive

1,2- lever; 3, 4, 6 - thrust; 5, 7, 17 - bolt; 8 - finger; 10 - sleeve; 11 - Spring; 12 - earring; 13 - Nut; 14 - shank; 15 - tip; 16 - plate; 18 - Switch 19 - ball; 20 - switching mechanisms.

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PPC MAZ is a gear shift mechanism that enters the transmission device along with the divider.

Device and switching scheme

The device and switching scheme MAZ depends on the gearbox model. Select 5 speed, 8-speed and 9-speed box.

5 speed

The design of the gearbox with five steps in the masse includes such elements as:

primary, secondary and intermediate shaft;
rotating bearing;
gears;
carter, switch and rear cover;
fasteners;
capacity for oil fluid.

The mechanism that switches the transfer is in the cabin vehicle. When the switch lever changes its position, the hinge joint is gripping with a removal, which is located on one of the axes. At this point, the end of the hinge is in hard engagement with a fork device. The plugs are included in the hole on the leading gear of the front (transmission No. 1, 2, 3, 4) or in the fifth transmission position (reverse). A closure begins in the circuit of the torque, which is why the secondary axis begins its movement.

8 speed

The eight-stage box (PPC 202) includes:

carter;
moving gears;
intermediate type shaft;
gears of continuous engagement;
leading shaft;
slots;
gear gear;
lid;
slave shaft;
gear block rear stroke;
axial reverse mechanism.

After transportation moves from the place, drops the required speed, you can switch the transmissions in the following order: 4H-4B-5H. In order to activate the second speed, you need to wait for the moment when the crankshaft rotation frequency will increase to 2000 revolutions per minute. This indicator can be monitored using a tachometer.

In order to turn on the reverse, you should set the switch lever to the lower position.

9 speed

The design of the 9-step box 238 with the demultiplier includes the following parts and mechanisms:

carter Coupling;
gasket;
speed switching fork;
right shaft;
gear sheeter reverse;
lazy rear gear;
intermediate shaft roller bearing;
fastening bolts and nuts;
spring washer;
sealing ring;
retain ring;
needle bearing;
coupling mechanism sleeve.

Before you start, you need to turn off the clutch. Before you touch, it is necessary to check the location of the lever, it must be omitted. Switching high-speed modes carried out in several stages. At the first stage, it is recommended to use the following switching scheme: 1B-2B-3B. During future movement, you can go to the scheme: 4H-5B-5H.

Change of oil

In order to replace the oil in the PPC MAZ, it is necessary:

Drive about 5-10 km on transport to warm the old oil in the box. At elevated temperature, it becomes liquid and it is easy to drain.
10-15 minutes after stopping the motor to install the vehicle on the lift or the observation pit.
Remove the crankcase protective cover.
Unscrew the plug and check the volume of oil fluid in the MCPP.
Check the wear gasket, if necessary, replace it with a new one.
Replace the exhaust filter elements.
Open the drain hole and drain the oil into the prepared container.
Pour a new oil fluid.
Spin the lid of the drain hole.
Install the protective clutch cover.
Turn the engine, check the oil level at different speed modes.

One of the famous brands of Belarus is "MAZ". Manufactured machinery from Minsk car factory (MAZ) to which tractors include forests, heavy trucks Known to the whole world.

Components of the PPC MAZ

The PPC of the vehicle (MAZ) includes several gears, which are connected to the transmission control lever. Each of the existing gear performs its function, rotates at a certain speed, ensuring efficient control of the machine.

The manufacturer has placed the box in the MAZ car between the crankshaft and the cardan shaft. Crankshaft It is a component part characterized by a complex form of execution. High demands were made to the production of this element. The cardan shaft is an equally reliable working mechanism, the function of which is to transmit the moment of force between the shafts.

Gearbox drive

In addition to the shafts, a stepped gearbox on the masse includes a crankcase, mortar, synchronizers. Adjusting the velocities by car is carried out by changing gears. Interacting between themselves, gears are capable of increasing and reduce the speed of the MAZ. Effectively triggers a lever with a divider.

Scheme of PPC MAZ

Air distributor PPC MAZ is designed to switch air flows. The device is placed in the top cover of the crankcase.

The dispensing box of the MAZ is a complex mechanism that ensures the locking of the wheels affects the change in the gear.

Considering this, transfer case MAZ is installed on heavy trucks, which are great for use in a dirt road, poorly equipped tracks.

PPC MAZ with the demultiplier includes the drive gear of the intermediate shaft, which is equipped with a damper. The damper helps to reduce oscillations. The MAZ pillow helps to suppress noise from the gearbox while driving.

Demultiprichtor scheme

PPP options for heavy trucks

The 8th step of the MAZ gearbox is characteristic of transport, which has high load capacity.

9-step versions are installed not only on powerful trucks, but also on ordinary cars.

5-speed gearbox are present on the MAZ-500 car with Diesel NMZ-236.

5 Step KPP

16-step versions are found on dump trucks, KAMAZ cars. The weight of the box at the same time exceeds 250 kg. PPC ZF16S has a transition slab that is communicated with the engine, gearbox.

Listed versions are distinguished by great reliability, long working capacity.

The car MAZ with the GPP ZF decide to acquire those who want to enjoy a full-fledged ride both in urban conditions and in rough terrain. Often this type CAT occurs on snow removal technique.

The need to care for the CAT

Promotes the extension of the resource speed \u200b\u200bbox - Timely her service. In particular, the car owner must follow the efficiency of the gear, control lever, control the level of the filled automobile system Maz oil.

If it is necessary to repair the gearbox on the MAZ, it is necessary to dismantle the gearbox from the standard location. The device must be visually examined for external deformations. The likelihood is the likely that it is the reason that the PPC "does not listen" of the driver teams. If there are no deformations, you can proceed to the disintegration of the CAT.

If the scheme of the PPP MAZ gave failure, the following signs will be manifested:

some transmissions are not triggered, for example, 4 and 5;
there is a difficulty manual switching.

For flushing, the PPC requires about 3 liters. special oil. Repair of PPC MAZ can be in restoring bridges, washing, box defective. Also, repair is subject to carcase and lid.

The ability to ride, it is not only a breakdown when maneuvering and alternation of clicks on accelerator pedals and brakes, it's also right choice The position-engagement gears in the transmission switching box. Of course, a long time ago, variators and other types of automatic and semi-automatic KP are developed, where the torque variability is selected by the node "on its own, following the settings. That's just there are some limitations of "choice", and on SUVs, and the trucks they are rare. Why, and why do they generally need? We answer ...

How to switch

Miscellaneous coverage or variations of the absence of it, the change in the relief by the "Up-Down" vector, the movement of the empty, with medium or full load - each of the proposed cases requires some particular velocity of the cooler-wheels and the effort to which it all happens. At the engine internal combustion There are certain frameworks on the numerical expression of frequency and torque, expand it, and get the ability to stable in several positions, is designed to change the velocity change box.

At the same time, the automatic transmission also has clearly designated reactions, and the operation of the majority is often associated with the ability to quickly, sometimes even unexpected variation of the speed of operation of the drive shafts. Especially if you go on the road, the state is far from perfect. And since the management of the manual transmission is remotely, by means of a switch lever, it must also know which positions of which speed correspond to.

Of course, it would be possible to do something like a linear displacement, but in this case the mechanism-kulis would remind a thick rocker with dimensions, and it was possible that it would be closed in the cockpit. And even with a standard 4-EX, 5-teach, but about 9, 12 and 16-teasel transmissions and we will not speak. Therefore, designers have all the opportunities to "stuff" in a complex, but compact pattern scheme. And it is necessary to remember it because the inconsistency of the selected transmission-range is not only problems with overcoming the route, but the risk of increased wear of parts, especially if the "incorrectness" is systematic.

How to switch

The standard version of the control scheme for an example is present on the 500th masses, for those who are able to forget where everything is happening, on the handles of the main working tool to change the speed-transmission is drawing. He looks like this:

- freely walking on the horizontal average vector handle - "neutral";
- left-up - the first, -lin - reverse;
- Center-down - the second, -Up - the third;
- Right-up - the fourth, is the fifth.

In the checkpoint with dividers-demultitators, the drawing is either left and the upper and lower ranges are overlapped with the preliminary initiation of the supplement, or the diagram itself is complicated by receiving a pair of additional "branches".

The transmission of the "teams" from the lever handle through a transverse roller is transmitted to industrialism, from there through the main craving for the embroidery. Then "turns on" a special axial roller and leads the box switching lever itself.

For such a "workhorse", like MAZ-500 and its modifications, due to the test loads of the problem, even the correct variation of the speed-transmission is not uncommon. Possible faultsBecause of which the PPC MAZ scheme does not work as provided abuse, but the most common three options are.

1. Do not "catch" the first and rear in the normal functioning of the rest.

To eliminate such a trouble, it is necessary to note the position of the thrust to its tip, release the coupling bolts and turn the tip clockwise by about 4-5 degrees (about 1 mm between tags). Then the bolts are tightened and functional is checked. If the problem is present on, we repeat the operation, that is, we shift the tip a little more.

2. With the rest of the rest, the 4th and 5th are not triggered.

We do the same as in the previous case, but this time the tip must be rotated counterclockwise.

3. The system itself works normally, but switching is hampered by improper position of the lever (for example, the lever rests on the panel).

I exhibit neutral and disconnect the thrust tip from the switching mechanism earrings. We are convinced that the mechanism lever is also in a neutral position - the plug is located vertically, and with the angular scholation there is a resistance to rotation. If everything is so, then we wrap up a locking screw to the intermediate mechanism, thereby fixing the "tight" intermediate roller. We relax the coupling bolts and exhibit along the length of the craving so that the stopper-finger is easy to pass through the holes of the earrings and tip. We connect them and tighten the scared bolts. After that, we turn off the locking screw of industrialism for five revolutions, and in front of its nut.

By the way, after partial disassembly of the drive, its adjustment is carried out according to the same principle.

Finally, we remind you - most of the components for drives, mechanisms and boxes (also dispensing and all kinds of supplements) MAZ you can find and buy in the online store of our trading house "Specmash". We work in bulk and retail, opal - cash and non-cash, is assumed to be deferred. We organize delivery in Russia (in many cities for free), telephone connection, e-mail and through the company's website.

Switching scheme

1 236-1702060-A2 Schot Fork Switch 1st Transmission and Reversing
2 236-1702014 Laying Cover
3 236-1702015-B2 Top Cover
4 236-1702129 Fuse inclusion 1 transmission and reverse
5 236-1702127-A Spring Fuse
6 236-1702132 Glass Springs
7 236-1702087 pin of the castle of the roller rods
8 316172-P29 Cork
9 200-1702083 Ball
10 236-1702122 Laying lever support
11 216258-p29 stud
12 252136-P2 Washer 10 Spring
12 252136-P2 Washer 10 Spring
13 250513-P29 Nut
14 236-1702126 axis leash
15 236-1702125 Leash switching 1 transmission and reverse
16 252137-p2 Spring washer
17 250615-P29 Nut
18 236-1702170 - Sapun
19 262522-P2 Cork
20 236-1702025 Screw installation
20 236-1702025 Screw installation
21 236-1702225-B shift lever
22 260311-P15 plug
23 260310-P15 plug
23 260310-P15 plug
23 260310-P15 plug
24 236-1702213 Bushing
25 236-1702129 Fuse inclusion of the 1st transmission and reverse
26 236-1702106 Spring
26 236-1702106 Spring
26 236-1702106 Spring
27 236-1702215 Bolt.
28 236-1702209-B3 Carter
29 236-1702206-B3 Carter remote gear mechanism assembly
30 236-1702235 Glass Fixer Springs
31 252161-p2 washer
32 236-1702100 ball lock
33 236-1702229 - Fork Stem Head
34 312534-P2 Washer Castle
35 310213-p29 bolt
36 201499-P29 bolt 10-6gx30
37 316121-P29 Cork to 1/4 "
38 236-1702216 Sealing Ring
39 236-1702227 Scholk fork Longitudinal Type Shift
40 236-1702024 Plug switching 1 transmission and reverse
41 236-1702221 Valik
42 314040-P2 Sponka
43 236-1702222 gear lever
44 236-1702241 Gasket
45 236-1702240 Distance switching mechanism crankcase
46 252135-p2 Spring washer
47 201454-P29 bolt M8X16
48 236-1702027 Switching plug 2nd and 3rd gear
49 236-1702053 Stem head switch 1 transmission and reverse
50 236-1702028 Switching Filler Stem Head 2nd and 3rd Gear
51 236-1702033 Switching fork 4th and 5th gear
52 236-1702064 Switching Forks 2nd and 3rd Gear
53 236-1702074 SCHOP of the plug of switching 4th and 5th gear
Link to this page: http: //www..php? TypeAuto \u003d 6 & Mark \u003d 14 & Model \u003d 46 & group \u003d 82

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