Changing gears on a MAZ manual transmission

The MAZ gear shift pattern depends on the type of gearbox installed on various models of MAZ cars. If you have MAZ 64229, MAZ 54323 cars, then they have a YaMZ 238A gearbox installed. It is a combination of a 4-speed gearbox and a two-stage range. That is, in fact, this gearbox is eight-speed.

Such different gearboxes, depending on car modifications, are made for a reason. This makes it easier to control, improves efficiency and increases the service life of the engine and gearbox mechanisms.

More on the topic

MAZ gear shift diagram

The MAZ gear shift pattern depends on the type of gearbox installed on various models of MAZ cars.
If you have MAZ 64229, MAZ 54323 cars, then they have a YaMZ 238A gearbox installed. It is a combination of a 4-speed gearbox and a two-stage range. That is, in fact, this gearbox is eight-speed. The gear shift diagram for MAZ models MA3 555I, MA3 53371, MAZ 5337, MAZ 5433, MA3 54331 is different. After all, the YaMZ 236P gearbox installed on these machines is five-speed. Among other things, some MAZ models are equipped with imported gearboxes that are adapted for the engines installed on MAZs. Such an example is the ZF 16S-1650, which has 16 steps, the ZF “Ecomid” 9S 1310 has 9 steps. These boxes are distinguished by the highest quality workmanship, great reliability, but at the same time, high-quality technical service.

Such different gearboxes, depending on car modifications, are made for a reason. This makes it easier to control, improves efficiency and increases the service life of the engine and gearbox mechanisms.

In order for the gearbox to serve for a long time, it is not enough to follow the MAZ gear shift pattern. It also needs to be properly maintained. Carry out all necessary routine maintenance to maintain the gearbox in good condition in a timely manner. The oil must be changed according to the instructions. Drain in a heated state through both holes in the pan. To flush the MAZ gearbox, you must use spindle oil. After this, we start the engine and “drive” it for 10 minutes. After this, drain the spindle and fill it with new one according to the map. It is strictly forbidden to wash the gearbox with kerosene or diesel fuel if you do not want the oil pump to break.

More on the topic

Modifications

Each model differs in technical indicators and overall dimensions, as well as in the cost of transport. Each dump truck has different engines and gearboxes.

Modifications of this vehicle include: 551603, 551608, 5516A5, 5516X5 and MAZ-5516A8-336.

MAZ-551603

MAZ-551608

Technical parameters of the MAZ-551608-236 modification:

MAZ-5516A5

There are several models of this modification on the market.

MAZ-5516A5-380 is a dump truck that is designed for transporting various bulk materials. The maximum load capacity of this model is 20,000 kg. This type of transport has a good cross-country ability. It has a powerful engine and a nine-speed gearbox. The power of the power unit is 330 hp. With.

The equipment is used in industrial enterprises and construction sites.

It is equipped with a spacious double cabin, spring suspension mechanisms, and pneumatic power steering. The recommended oil for filling into the engine is LUKOIL-avant-garde.

MAZ-5516A5-371. The car is based on a 6x4 chassis. A reliable YaMZ-6582.10 engine, manufactured in accordance with the international environmental standard Euro-3, is installed here. The fuel tank holds 350 liters of working fluid, and the average fuel consumption is 33 liters per 100 km.

It is recommended to change all main consumables (tires, bearings, valves, filter elements, oil fluid) once a season. This will help extend the life of the vehicle and protect the main components from premature wear and damage. The first maintenance should be carried out after 5,000 km.

MAZ-5516A5-375. This vehicle works properly in off-road conditions and at low ambient temperatures (temperature range -30...+35°C). Equipped with a nine-speed gearbox and a small cabin with no sleeping space. The amount of exhaust gases complies with the international environmental standard Euro-3.

The cabin is attached to the dump truck body using a pneumatic spring front suspension. An improved shock absorber system is installed here, which makes driving this vehicle more comfortable. MAZ is equipped with an eight-cylinder engine producing 320 hp.

MAZ-5516A5-347 is equipped with a YaMZ-6582.10 engine, the power of which is 330 hp. With. The wheel formula of the car is 6x4. The equipment meets international environmental standards Euro-2. The car runs on diesel fuel, the engine displacement is 11.8 liters. It is recommended to use different oils for the winter and summer seasons.

MAZ-5516X5

MAZ-5516X5-481-000 is a dump truck with a rear unloading type, designed for transporting construction bulk cargo. The model of the installed engine is YaMZ-65853 (power - 330 hp). The volume of the cargo platform is 12.5 m3. The number of cylindrical elements is 8, their diameter is 12 cm. The model is characterized by economical fuel consumption and ease of maintenance. The cylinders operate in the following sequence: 1-3-2-4-5-7-6-8.

The equipment is equipped with a nine-speed gearbox and a high-pressure fuel pump. All electrical equipment indicators are displayed on the dashboard.

MAZ-5516Х5-480-050 is a small dump truck designed for transporting various cargoes whose weight does not exceed 20,000 kg. It is equipped with a double cabin with a berth, the cabin body is not sprung. The maximum speed that this vehicle can reach is 85 km/h, while fuel consumption will be 38 liters per 100 km. The power of the power unit is 330 hp. With.

MAZ gear diagram

How does the switch happen?

Different coverage or variations in the absence of it, changes in the topography along the “up-down” vector, movement empty, with an average or full load - each of the proposed cases requires a specific torsion speed of the moving wheels and the force with which all this occurs. An internal combustion engine has certain limits in terms of the numerical expression of frequency and torque; to expand it and gain the ability to be stable in several positions, a gearbox is called upon.

At the same time, automatic transmissions also have clearly defined reactions, and the operation of a heavy truck is often associated with the ability to quickly, sometimes even unexpectedly vary the speed and torque of the drive shafts. Especially if you have to drive along a road whose condition is far from ideal. And since the manual transmission is controlled remotely, using a switch lever, it must know which positions correspond to which torque and speed.

Of course, it would be possible to do something like a linear displacement, but in this case the rocker mechanism would resemble the dimensions of a thick rocker arm, and it is possible that the cabin would become a bit cramped. And this is even with a standard 4- or 5-speed transmission, and we won’t even talk about 9, 12 and 16-speed transmissions. Therefore, designers have to “cram” all the possibilities into a complex, but compact drawing diagram. And it is necessary to remember it because the discrepancy between the selected gear and range means 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 circuit, for example, is present on the 500th MAZ. For those who are able to forget in what order everything happens, a drawing is printed on the handles of the main working tool for changing the speed and transmission. It looks like this:

1. — the handle freely walking along the horizontal average vector is “neutral”;
2. - left-up - first, -down - reverse;
3. - center-down - second, -up - third;
4. - to the right - up - fourth, - down - fifth.

In a gearbox with multiplier dividers, the pattern either remains and the upper and lower ranges overlap when the additional box is first initiated, or the pattern itself becomes more complicated, receiving a couple of additional “branches.”

The transmission of “commands” from the handle-lever is transmitted via a transverse roller to the industrial mechanism, and from there through the main rod to the industrial lever. Then a special axial roller “turns on” and sets the gearbox shift lever itself in motion.

For such a “workhorse” as the MAZ-500 and its modifications, due to the loads experienced, problems even with the correct change of gear speed are not uncommon. There are plenty of possible malfunctions due to which the MAZ gearbox circuit does not work as intended, but three options are the most common.

1. The first and rear ones do not “catch” when the others are functioning normally.

• To eliminate such a problem, you need to mark the position of the rod to its tip, loosen the tightening bolts and turn the tip clockwise by about 4-5 degrees (about 1 mm between the marks). Then the bolts are tightened and functionality is checked. If the problem persists further, then we repeat the operation, that is, we move the tip a little more.

2. When the others are working, the 4th and 5th do not work.

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

3. The system itself works fine, but switching is made difficult by the incorrect position of the lever (for example, the lever rests against the panel).

• Set neutral and disconnect the rod end from the shift mechanism earring. We make sure that the mechanism lever is also in a neutral position - the fork is located vertically, and when angularly rocked, resistance to rotation is felt. If everything is so, then tighten the locking screw on the intermediate mechanism until it stops, thereby “tightly” fixing the intermediate roller. We loosen the coupling bolts and adjust the length of the rod so that the stopper pin easily passes through the holes of the earring and the tip. We connect them and tighten the coupling bolts. After this, unscrew the locking screw of the industrial mechanism five turns and lock it with a nut.

MAZ gearbox design: types and principle of operation

In this article, we will tell you what functions the gearbox performs in a MAZ engine, make several recommendations for repairs, and also indicate a MAZ gearshift diagram with a divider, which you can examine and study in detail.

Purpose of the checkpoint

The gearbox contains such an element as a gear, usually there are several of them, they are connected to the gear control lever and it is due to them that gear shifts occur. By changing gears, the speed of the car is adjusted.

That is, in other words, gears are gears. They have different sizes and different rotation speeds. In the process of work, one catches the other. The system of such work is due to the fact that a large gear engages a smaller one, the rotation increases, and at the same time the speed of the MAZ vehicle. In cases where a small gear engages a large one, the speed, on the contrary, drops. The gearbox consists of 4 speeds plus reverse. The first is considered the lowest and with the addition of each gear the car begins to move faster.

The box is located in a MAZ car between the crankshaft and the driveshaft. The first comes directly from the engine. The second is directly connected to the wheels and drives them. List of works that lead to speed adjustment:

1. The motor sets the movement of the drive and crankshaft.
2. The gearbox gears receive a signal and start moving.
3. Using the gear shift lever, the driver selects the required speed.
4. The speed selected by the driver is transmitted to the driveshaft, which powers the wheels.
5. The car continues to move at the selected speed.

Device diagram

The diagram of the gearshift device for a gearbox with a divider on a MAZ is not simple, but it will greatly help you when carrying out repair work. The MAZ manual gearbox consists of elements such as a crankcase, shafts, mortar, synchronizers, gears and other equally important elements.

9 speed

Such a unit is installed, in most cases, on trucks or cars that will be subject to high traffic.

9 speed gearbox

8 speed

This unit, like its predecessor, is popular among machines with high payloads.

5 speed

The most popular among passenger cars.

5 speed gearbox

Repair recommendations

Want to keep your divider box in good condition for years to come? Then she needs care and basic checks. It is necessary to monitor the operation of elements such as gears, a mortar, the control lever itself, and so on. Has it happened that a breakdown can no longer be avoided? We will give you the following recommendations for self-repair:

If you are not confident in your abilities, do not have certain skills and knowledge, contact the service center. Isn't there such a possibility? Well, it's never too late to learn new and useful things. Ask questions in the comments, we will give you open and detailed answers.

This article examined the gear shift scheme for MAZ of all types. We hope that the information was useful to you in your repair. Let your box serve you for many years!

You can see the principle of operation of a manual transmission in this video.

How to change gears on a MAZ with a divider

The MAZ gear shift pattern depends on the type of gearbox installed on various models of MAZ cars. If you have MAZ 64229, MAZ 54323 cars, then they have a YaMZ 238A gearbox installed. It is a combination of a 4-speed gearbox and a two-stage range. That is, in fact, this gearbox is eight-speed.

The gear shift diagram for MAZ models MA3 555I, MA3 53371, MAZ 5337, MAZ 5433, MA3 54331 is different. After all, the YaMZ 236P gearbox installed on these machines is five-speed. Among other things, some MAZ models are equipped with imported gearboxes that are adapted for the engines installed on MAZs. Such an example is the ZF 16S-1650, which has 16 steps, the ZF “Ecomid” 9S 1310 has 9 steps. These boxes are distinguished by the highest quality workmanship, great reliability, but at the same time, high-quality technical service.

Such different gearboxes, depending on car modifications, are made for a reason. This makes it easier to control, improves efficiency and increases the service life of the engine and gearbox mechanisms.

In order for the gearbox to serve for a long time, it is not enough to follow the MAZ gear shift pattern. It also needs to be properly maintained. Carry out all necessary routine maintenance to maintain the gearbox in good condition in a timely manner. The oil must be changed according to the instructions. Drain in a heated state through both holes in the pan. To flush the MAZ gearbox, you must use spindle oil. After this, we start the engine and “drive” it for 10 minutes. After this, drain the spindle and fill it with new one according to the map. It is strictly forbidden to wash the gearbox with kerosene or diesel fuel if you do not want the oil pump to break.

Specifications

Description and characteristics of MAZ-5516A5:

MAZ-5516 - technical characteristics also include such indicators as: fuel fluid consumption, parameters and lifting properties.

Fuel consumption

Average fuel consumption per 100 km is 30 liters. According to the car manufacturer's recommendations, you should choose an oil fluid depending on the season.

Dimensions

Overall dimensions of model 5516 dump truck:

• length - 7.19 m;
• width - 2.5 m;
• height - 3.1 m;
• body volume - 14.3 m3.

MAZ gearbox range control device

The design of the divider is similar to a simple gearbox. The part is the same gearbox, but with a significant difference. The modern MAZ gearbox range has only two speeds. One of them is standard or straight.

Here the torque is transmitted according to the usual principle.

The second is increased, with torque in the form of the average of two adjacent numbers.

Structurally, the MAZ 238 range-multiplier circuit in the gearbox does not change in comparison with the traditional unit. But there are some peculiarities here:

• The divider is mounted in front of the main gearbox;
• The number of output speeds is maintained;
• The driver can more accurately adjust the power of the power plant taking into account the load and speed.

The advantages of this unit are obvious.

Thus, the MAZ 238 gearbox with a range of multipliers makes it possible to reduce fuel consumption, as well as extend the service life of the components in the main box.

Options for MAZ range multipliers

We remind you that in our catalog you can order everything you need for quick MAZ repairs.

On our website there are several options for the MAZ gearbox range.

For example, an additional gearbox. The device is relevant for machines that are used in difficult conditions and work with impressive loads. The reduction type mechanism provides an increase in the number of gears and gear ratios in the box. Here one gear is direct, the second is a reduction gear.

The main purpose of using a MAZ 238 gearbox with a multiplier is to prevent excessive engine overload. This problem is solved by increasing the available gear range.

Malfunctions and repairs

The optimal design of the MAZ 238 range multiplier in the gearbox makes the device quite reliable, but malfunctions can also occur here. If the gears in the mechanism are switched with grinding and shock, the pressure in the pneumatic system that controls the unit may increase. Slow disengagement or non-disengagement of the gear may indicate wear of components, most often seals.

To ensure the operation of the MAZ 238 gearbox with a range multiplier, it is necessary to replace worn components. It may be necessary to adjust the pressure relief valve, flush or purge, or restore insulation integrity.

If you are looking for spare parts or a diagram of the MAZ 238 range-multiplier for the gearbox, we advise you to contact a specialist from our company. Call the manager by phone. A specialist will not only help you choose the best options for components, but will also organize fast delivery of units to any city in the country.

The MAZ gearbox is a gear shift mechanism that is included in the transmission device along with the divider.

Gearbox: device, characteristics, principle of operation

The MAZ gearbox is equipped with five ranges and is combined with a YaMZ-236 diesel engine. It has an acceleration range and remote control. There are also several other modifications of this unit. To activate the second and third speeds, the synchronizer is activated. Let's look at the structure of this car unit and its features.

Essential elements

The MAZ gearbox includes a primary shaft with a gear mounted on a crankcase with ball-type bearings. In addition, there is an intermediate shaft. From the front it looks like a device on a cylindrical roller bearing, and from the back it looks like a ball analogue. The rear element compartment is protected by a cast iron cover, the first and reverse gears are cut directly onto the shaft, and the remaining ranges and power take-off are carried out through keyed drive gears.

The MAZ gearbox with range control is equipped with an intermediate shaft drive gear with a damper damper. This makes it possible to reduce vibrations transformed from the power unit to the transmission box. In addition, this solution makes it possible to reduce the noise of the gear at idle speed. The need to install a damper is due to the insufficient uniformity of operation of the YaMZ-236 type motor.

The gear tooth is made separately from the hub. It is disconnected using six cylindrical springs. Residual vibrations are damped by deformation of the spring elements and friction in the damper unit.

Device

An axle with a pair of roller bearings and a reverse gear is installed on the side between the intermediate and secondary shaft. The front gear element is aggregated with the analogue of the first speed using an additional shaft, and the rear gear is engaged by activating the reverse gear.

On a MAZ semi-trailer, the front part of the secondary shaft is mounted on a roller bearing, and the rear element is installed in a ball bearing bath. On the protruding part there is a speedometer drive gear; at the back, the part is protected by a cover in which the oil seal and speedometer drive are located. A mechanism for shifting first and reverse gears is installed on the splined rear part of the shaft. It is worth noting that this gear is equipped with straight teeth.

Peculiarities

A gear sliding structure is freely installed on the secondary shaft of the MAZ gearbox on steel bearings. This includes adjusting the second, third and fifth speeds. The elements are protected from longitudinal displacement by means of oblique teeth and thrust rings. Three gears have constant mesh with the intermediate shaft. The gears are made with a conical base and an internal toothed surface.

The synchronizers are located between the gear elements of the second and third speeds. They ensure silent switching of gears. The synchronizer itself consists of a coupling, which is located on the splines of the rear hub, as well as a housing with bronze o-rings. The frame is aggregated with the coupling using ball-type clamps. The coupling is equipped with gear rims. Her fingers pass through special sockets; rings with pins and a switch fork are attached to them on the outside.

MAZ “Zubrenok” checkpoint: work

When this unit operates, the housing ring of the housing is pressed against the cone by the gears. In this regard, the friction between the contacting surfaces causes rotation and installation of the cavity on the slot with the coupling pin, and the element is blocked by the housing.

The frame then interacts with the gear cone due to the resulting force applied to the gear shifter. After the effect of friction occurs between the speed cones and the gear with the clutch, the load forces are leveled and the locking device releases the clutch from the base of the synchronizer. Next, the coupling moves by extruding the balls of the locking device, which moves to the side. Then the gear ring of the assembly engages with the internal teeth of the mechanism, which entails the inclusion of one or another gear.

Functional scheme

There are three adjusting rods in the crankcase cover sockets. Their forks are combined with a control carriage for first and reverse gears, as well as a pair of clutch synchronizers. The switches are equipped with ball detents and locks.

The MAZ gearbox diagram presented below confirms that the most loaded bearings receive lubricant under the created operating pressure. Oil flows from the bath through a detachable filter element. It is equipped with a magnet that allows fluid to flow through the suction of the gear pump. This unit is driven by the leading edge of the intermediate shaft. Next, the mixture is pumped through a groove in the crankcase and enters through the channel of the primary and secondary shafts into the gear bearings of the mechanism. The remaining elements are lubricated by splashing the incoming oil.

Oil pump

The MAZ-4370 gearbox is equipped with an oil pump, which has a ball valve that serves to limit the oil pressure in the transmission system. The crankcase of the unit is equipped with an internal partition, which causes the release of used oil through two holes blocked by special plugs.

Gear control is carried out via a lever located in the cab. The operating principle of the circuit is to mechanically switch a remote drive located above the power unit. In the bracket of the transmission unit crankcase cover there is a pair of support rollers that serve to change speeds using grooves and necks located on the adjusting rods.

In the middle position, the lever is located with a pin with a lock and a spring upward. At this time, the lower analogue of the fuse is activated along with the spring. The pin is externally mounted in the swing compartment of the first and reverse gears. The leash is mounted on a hinge pin mounted at the front of the box lid.

Other details

The MAZ semi-trailer in the gearbox system is equipped with a front roller, which controls the second lever inserted into the head of the movable rod of the bracket. The outer part of the movable rod is connected to the intermediate control mechanism using a cardan extended rod. The fixing bracket is attached to the car frame.

The lower edge of the shift lever is connected to the same unit. The method of fastening is similar to the above method. Part of the lever extends through the cabin floor, ensuring the integrity of all other connections. This design makes it possible to tilt the cabin without the need to separate and deform existing elements and assemblies.

In conclusion

I would like to dwell in more detail on the features of the MA3-2G0 machine’s gearbox. This unit is almost identical to the device on the 500th MAZ. The drive gear does not have a damper, but the second, third and fifth speeds are activated using a secondary shaft on needle-type bearings. The switch lever is placed on a ball joint, the housing of which is fixed to the cover of the switch box. It has a reverse activation fuse, as well as a pin with a spring installed in the steering bracket socket. The unit in question has proven itself to be a direct competitor to domestic and foreign analogues, in accordance with the combination of price and quality parameters.

Switching device and circuit

The design and diagram of the MAZ gear shift depends on the gearbox model. There are 5-speed, 8-speed and 9-speed gearboxes.

5 speed

The design of a five-speed gearbox in a MAZ includes such elements as:

• primary, secondary and intermediate shaft;
• rotating bearing;
• gears;
• crankcase, switch and rear cover;
• fasteners;
• container for oil liquid.

The mechanism that changes gears is located inside the vehicle. When the lever of the switching device changes its position, the articulated joint engages with the recess, which is located on one of the axes. At this moment, the end of the hinge is in rigid engagement with the fork device. The forks fit into the hole on the forward drive gear (gears No. 1, 2, 3, 4) or in the fifth gear position (reverse). A short circuit begins in the torque circuit, causing the secondary axis to begin its movement.

8 speed

The eight-speed gearbox (Gearbox-202) includes:

• crankcase;
• movable gears;
• intermediate shaft;
• constant mesh gears;
• drive shaft;
• splines;
• gear type rim;
• cover;
• driven shaft;
• reverse gear block;
• axial reverse mechanism.

After the vehicle moves and picks up the required speed, you can change gears in the following order: 4H-4B-5H. In order to activate the second speed, you need to wait until the crankshaft speed increases to 2000 rpm. This indicator can be monitored using a tachometer.

It is not recommended to start shifting gears at a lower number of crankshaft revolutions, otherwise the mechanism will fail.

In order to engage reverse, set the switch lever to the down position.

9 speed

The design of the 9-speed gearbox 238 with a range-shifter includes the following parts and mechanisms:

• coupling housing;
• pad;
• gear shift fork;
• right shaft;
• reverse gear washer;
• lazy reverse gear;
• intermediate type roller shaft bearing;
• mounting bolts and nuts;
• spring washer;
• sealing ring;
• retaining ring;
• needle bearing;
• clutch fork bushing.

Before driving, you must disengage the clutch. Before moving off, you need to check the location of the lever; it must be lowered. Switching speed modes is carried out in several stages. At the first stage, it is recommended to use the following switching pattern: 1B-2B-3B. During further movement, you can switch to the pattern: 4H-5B-5H.

Gear ratios

Change of oil

In order to change the oil in a MAZ gearbox, you must:

1. Drive about 5-10 km by vehicle to warm up the old oil in the box. At elevated temperatures it becomes liquid and is easy to drain.
2. 10-15 minutes after stopping the engine, place the vehicle on a lift or inspection pit.
3. Remove the crankcase protective cover.
4. Unscrew the plug and check the volume of oil fluid in the manual transmission.
5. Check the gasket for wear and, if necessary, replace it with a new one.
6. Replace worn filter elements.
7. Open the drain hole and drain the oil into a prepared container.
8. Fill with new oil fluid.
9. Screw on the drain cap.
10. Reinstall the clutch protective cover.
11. Start the engine and check the oil level at various speeds.

Repair of YaMZ-238A MAZ gearbox

Page 1 of 3

Caring for the gearbox involves checking the oil level and changing it in the crankcase. The oil level in the crankcase must match the inspection hole. The oil must be drained while hot through all drain holes. After draining the oil, you need to remove the cover at the bottom of the crankcase, which houses the oil pump oil receiver with a magnet, rinse them thoroughly and reinstall them. In this case, you should pay attention not to block the oil line with the cap or its gasket.

To flush the gearbox, it is recommended to use 2.5 - 3 liters of industrial oil I-12A or I-20A in accordance with GOST 20799-75. With the gearbox control lever in neutral position, start the engine for 7 - 8 minutes, then stop it, drain the flushing oil and fill the gearbox with the oil provided in the lubrication card. It is unacceptable to flush the gearbox with kerosene or diesel fuel.

During operation of the gearbox drive, adjustments are possible:

— position of lever 3 (see Fig. 1) for gear shifting in the longitudinal direction;

— position of the gear shift lever in the transverse direction;

— blocking device for telescopic elements of longitudinal thrust.

To adjust the tilt angle of the lever 3 in the longitudinal direction, it is necessary to loosen the nuts of the bolts 6 and move the rod 4 in the axial direction to set the tilt angle of the lever to approximately 85 ° (see Fig. 1) in a neutral position in the gearbox.

Adjusting the position of the lever in the transverse direction is carried out by changing the length of the transverse rod 17, for which it is necessary to disconnect one of the ends 16 and, by unscrewing the nuts, adjust the length of the rod so that the gearbox control lever, being in a neutral position, is opposed to engaging 6 - 2 and 5 - 1 gears , had approximately an angle of 90˚ to the horizontal plane of the cabin (in the transverse plane of the car).

The gear shift drive locking device must be adjusted as follows:

— unpin pin 23 and disconnect rod 4 from fork 22;

— clean the earring 25 and the internal rod from old grease and dirt;

— push in the internal rod until the locking sleeve 15 “clicks”;

— loosen the nut of the earring 25 and, inserting a screwdriver into the slot of the shank of the internal rod, unscrew it until the angular play of the earring disappears;

— holding shank 24 from turning, tighten the locknut;

— check the quality of adjustment. When the locking sleeve 21 is shifted towards the spring 19, the internal rod should be pulled out to its entire length without jamming, and when the rod is pushed inwards until it stops in the grooves, the locking sleeve should move clearly with a “click” until the bushing stops at the lower protrusion of the earring.

When adjusting the drive, the following requirements must be observed:

— make adjustments with the cab raised and the engine not running;

- avoid bending and bending of the outer and inner movable rods;

— to avoid breakage, connect rod 4 to fork 22 so that the hole in the shackle for finger 23 is located above the longitudinal axis of rod 4;

— check the neutral position of the gearbox with the cab raised by freely moving lever 18 of the gear shift mechanism in the transverse direction (relative to the longitudinal axis of the vehicle). Roller 12, when the box is in the neutral position, has an axial movement of 30 - 35 mm, and the compression of the spring is felt.

The gearbox drive adjustments described above should be made when removing and installing the engine and cab.

How to remove and install the box

Disassembling the MAZ gearbox:

1. Place the truck on a special platform.
2. Remove batteries.
3. Remove air filter elements.
4. Disconnect the mudguards located in the engine compartment.
5. Remove the front suspension cross member.
6. Drain the gearbox oil.
7. Disconnect the speed sensors, reverse switch.
8. Remove the powertrain harness holder.
9. Loosen the mounting bolts.
10. Remove the electric starter from the coupling housing housing without disconnecting it from the wire.
11. Unscrew the front and rear support mechanisms from the gearbox bracket.
12. Disconnect the left support and disengage the input shaft.
13. Remove the gearbox.

In order to put the KAMAZ box in place, you need to repeat all the steps in reverse order.

The best boxes for MAZ “Zubrenok”

The medium-tonnage MAZ-4370 is known in the world as the “Zubrenok”. In Russia, this is one of the most popular Belarusian trucks. Recently, wonderful gearboxes specifically for this car have appeared on our website!

By default, the MAZ-4370 is equipped with the SAAZ 433420-1700010-M gearbox. For many years, drivers have complained about the extreme unreliability of this unit, as well as the low availability of spare parts for it. But now everything promises to change for the better.

Chinese gearboxes 6J60T and 6J70T are ideal for replacing the standard Zubrenka gearbox. They are manufactured by the Shaanxi plant, which has been cooperating with the MAZ concern for a long time. These gearboxes were developed by Eaton and are produced in the Middle Kingdom under license. Their American roots make them highly reliable, and assembly at Chinese factories ensures an attractive price.

Both models are almost the same. Each is synchronized and has six stages. Their gears are helical and straight-toothed, with constant meshing. Combined lubrication system - forced and splashing. The weight of the boxes is 195 kg, the length is 720 mm, and the volume of oil filled is 8 liters. The only difference between the 6J60T and 6J70T is the presence of a power take-off in the latter.

Changing SAAZ to Shaft-Gear

6J60T and 6J70T are fully compatible with the engines that the Minsk Automobile Plant installs on the Zubrenok. Therefore, installing these boxes will be practically no difficulty. To implement it successfully, you only need to make three small changes:

1. Shorten the driveshaft, as the boxes vary slightly in size.
2. Change the driven clutch disc (the diameter of the SAAZ-433420 shaft is 45 mm, and a reinforced 50 mm shaft is installed on the 6J series gearbox).
3. Extend the PSU rod and install the rod stop on the switching mechanism.

After performing these simple manipulations and installing the new box, your “Zubrenok” will be completely ready for work. Replacing SAAZ with Shaft-Gear 6J line will provide many tangible advantages. You will receive a synchronized gearbox, which has a much longer resource. This will allow you to turn to car services for help much less often.

And if a breakdown does occur, there will never be any problems with repairs. There is no need to order and wait for high-quality spare parts for Shaft-Gear gearboxes. They are always available at any self-respecting service station. The warehouses of our workshops are always filled with everything necessary for the successful servicing of Chinese boxes.

www.shaft-gear.ru

Electrical diagram MAZ 4370 Zubrenok

MAZ-4370 electrical diagram, color

The electrical engine control system is equipped with a built-in self-diagnosis function and does not require maintenance, except for a control check after repair or adjustment of fuel system elements and components.

Layout of electronic control systems on the MAZ 4370

Scheme of electronic control systems MAZ-4370

To install electrical equipment on the MAZ 4370, you can use the following electrical diagram.

Installation diagram of electrical equipment MAZ-4370

The relay and fuse panel on the MAZ 4370 looks like this:

Relays and fuses in the MAZ-4370 cab

Transmission options for heavy-duty vehicles

The 8-speed MAZ gearbox is typical for vehicles that have a high load capacity.

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

5-speed gearboxes are present on the MAZ-500 with the YaMZ-236 diesel engine.

5 speed gearbox

16-speed versions are found on dump trucks and KamAZ vehicles. The weight of the box exceeds 250 kg. The ZF16S gearbox has an adapter plate that communicates with the engine and gearbox.

The listed versions are distinguished by high reliability and long-term operating capability.

Those who want to enjoy a full ride both in urban conditions and on rough terrain decide to purchase a MAZ car with a ZF gearbox. This type of gearbox is often found on snow removal equipment.

( 2 ratings, average 4 out of 5 )

Spare parts for MAZ-5337 trucks

The Minsk Automobile Plant began producing the MAZ-5337 car in 1987. Has a 4x2 wheel arrangement. MAZ-5337 is widely used for installations of all kinds of bodies, as well as additional equipment. The onboard tractor-trailer is produced both in a basic version and in a version for cold climates - MAZ-533701 and in the form of a MAZ-5334 chassis. On the website you can buy MAZ-5337 spare parts in a special catalog.

MAZ-5337 has a metal platform, with the ability to open the rear and side sides, with wooden flooring. The MAZ-5337 has a two-seater cabin that tilts forward using a hydraulic cylinder with a hand pump, and the sprung driver's seat is adjustable in length and height. The main trailer of the car is MAZ-8926. Modifications: MAZ-53371, MAZ-54323, MAZ-5551, MAZ-64229. Thanks to our MAZ-5337 spare parts catalog, you can easily find all the spare parts you need, because using the catalog is easy and convenient.

Curb weight, kg: 7150. Gross weight, kg: 16000. Load capacity, kg: 8700. Permissible trailer weight, kg: 12000. Permissible total weight of the road train, kg: 28000. Engine: Mod. YaMZ-236M2, diesel, V-shaped . Net engine power, kW (hp): 132 (180) Torque, Nm (kgf-m): 667 (68) at 1250-1450 rpm. Maximum speed, km/h: 85. Control fuel consumption, l/100 km, vehicle at 60 km/h: 21.5.

Our specialists will advise you on all questions and tell you about all the MAZ-5337 spare parts that are right for you. By purchasing spare parts from Dynamics 76, you are guaranteed to purchase high-quality parts for MAZ.