Installing the clutch disc Maz

Let's figure out how to install the Maz clutch disc.

Petal clutch MAZ news SpetsMash

If you try to ask any "Google" and "Yandex" a similar question, then, most likely, in response you will receive on your monitor a lot of information about where to buy, sell, find hydraulics or friction clutch, one, two - MAZ clutch disc, KrAZ or KamAZ, etc., but you won't get a direct answer.

There is a feeling that it seems to be and even widely used, but no one knows exactly how it works, or does not want to talk. A similar situation could arise if we were talking about some ultra-modern, almost secret development.

But what kind of novelty or secret can we talk about if the MAZ single-plate petal clutch was also used on the almost legendary trucks of the 525th series?

Everything is much simpler, most of those publishing articles on the Internet forget to report that the clutch is popularly called a petal, which in the official version is often called a diaphragm. That is, we are talking about the type of clutch, where the impact on the pressure plate is carried out by means of a diaphragm spring.

The outer diameter, only the one that rests on the pressure plate, is standard, but the inner diameter that contacts the release bearing is a series of springy metal petals. Together with the pressure plate and housing, the diaphragm spring forms a single unit, which is commonly called the clutch basket. Such a basket can be push or, which is used a little less often, exhaust.

In the exhaust basket, when the clutch is released, the spring petals move away from the flywheel.

Among the main reasons why the MAZ petal clutch gradually “survives” the standard lever clutch, three can be distinguished: - in the lever clutch, it is required to periodically adjust the working “paws”, in the diaphragm there is no such need, which means less work and less lost time; - the non-linearity of the characteristic of the diaphragm spring causes an increase in the pressure force when the driven disk is worn, the cylindrical springs in the lever clutch cannot do this, that is, in the petal clutch, the driven disk will last longer without slipping;

- the diaphragm clutch requires less force to press the pedal, which is not only more convenient, but also ensures a longer service life of the CCGT and release bearing.

Consultation on technical issues, purchase of spare parts 8-916-161-01-97 Sergey Nikolaevich

 

Maz clutch repair

In the last article, we wrote about what a MAZ clutch is, what nodes this element includes. Today we will tell you in detail how to repair the MAZ clutch. Practical advice, photos of replacing the MAZ clutch will help in the repair of a modern truck.

 

MAZ clutch repair - where to start?

Adjusting the MAZ clutch is much more difficult than repairing the element. We will touch on the nuances of tuning in the following articles. And now we will study how the MAZ clutch is replaced. Before proceeding with the repair of spare parts for maz, we recommend that you think about the causes of the breakdown. The maz clutch can fail due to the failure of the driven disk and due to wear of the bearings, springs and seals. As a consequence, you may notice that the truck:

• It makes sudden jerks in the plant.
• Noisy when you press the pedal and smells of burning.
• It has a mismatch between acceleration and rotation.

Another reason for the failure of the MAZ clutch is that it is very difficult to shift gears.

These signs of wear can be eliminated by adjusting the maz clutch.

The first thing we do is check the CCGT.

Depress the clutch pedal. Pay attention to the power of the CCGT. If this element moves, that is, it gradually pulls out the shutdown plug, the spare part is serviceable and does not require replacement. Maz clutch repair takes place in several stages. After checking the CCGT, we looked at the clutch cover. Ideally, there should be no oil stains on it. In some cases, the clutch may "slip" due to excess oil. Look, we eliminate the causes. If the car, even after removing the oil and checking the CCGT, does not work properly, we continue to repair the clutch maz.

Replacing the clutch MAZ - remove the gearbox

Breakage of the element in question is possible due to failure of the clutch disc, basket and bearing (release). Sometimes the discs are filled with oil. However, it is possible to understand why the clutch is slipping, why the clutch is tight, only after disassembling the gearbox.

Therefore, we removed the gearbox and continue to repair the clutch MAZ. I recommend replacing several spare parts along the way, which, in principle, do not affect the failure of the clutch.

The fact is that in most cases, the elements have significant signs of wear, which will eventually lead to their failure. Also, if you're in the clutch repair business, that means the crankcase hasn't been removed for at least a year.

Therefore, some consumables really have to be replaced. Replacing a clutch maz often includes buying a new one:

• Clutch disc
• Release the hose from the bearing.
• Release bearing.
• Transmission input shaft seal.
• Bearing spring.
• Oil pump and shaft seals.

Only after buying new spare parts I recommend doing a clutch repair MAZ.

Replacing the truck clutch

Let's raise the body first. Be sure to secure it in this position.

So replacing the clutch maz will not hurt you. In general, take basic precautions. Then gradually drain the oil from the gearbox. We disconnect elements such as the lifting pump from the body, cardan and tubes.

Repair of the MAZ clutch also requires the removal of the cross member with the rear shock absorber, PGU and its bracket from the bracket.

I emphasize: ALWAYS remove the support! Adjusting the clutch maz, most often, if you do not remove the mount, it can lead to breakage of the release bearing fork and its spring.

After that, inspect the condition of the release bearing and gearbox basket. If you did not find any signs of wear on these elements, the clutch adjustment of the maz is carried out further. Therefore, we remove the steering wheel basket from the car. This will give us access to the clutch disc. Let's look at the details. If traces of damage are found, we repair or replace the spare part with a new one. If the disk is in good condition, then the replacement of the MAZ clutch continues.

Adjusting the MAZ clutch may seem like a simple task, but .. there are many nuances. For example, the input shaft support bearing. I remind you that he is on the wheel. With long-term operation of the dump truck, this element wears out a lot. Everything can start with an oil seal. Once you replace it, the spare part may still leak oil. Therefore, if you need to replace the clutch maz, change the bearing as well - problems with the oil seal will disappear for a couple of years, so be sure to replace the element in time.

Clutch Replacement Tips

We recommend that you go through a process such as adjusting the clutch of the maz in a certain sequence.

Look at the clutch disc first. If it is defective, we will replace it with a new one. In this case, pay attention to the support bearing. If the element does not require replacement, simply lubricate it with oil and install.

Carefully inspect the clutch basket. Adjusting the clutch maz requires a thorough check of the integrity of the clutch petals, the presence of traces of overheating and cracks. See crowbar bearing. It is better to replace this part immediately. Otherwise, clutch adjustment will be repeated at least two times.

Clutch adjustment is complete. Once the process is complete, we install the clutch and gearbox in the dump truck. Naturally, we collect in the reverse order. But let's clarify some of the nuances in the assembly of this element.

Clutch adjustment maz requires removal of the clutch disc. However, its installation can cause various difficulties. Therefore, it is extremely important to use the input shaft for centering with respect to the disc basket and bearing.

In addition, the replacement of the clutch maz, or rather the installation of the element, can also be carried out using a plastic input shaft. It is usually cheaper and lighter. Otherwise, replacing the clutch maz and assembling the element is usually not difficult.

Inspect the truck as often as possible. Having identified the causes of breakdowns, urgently repair the clutch maz. Then this element will rarely bother you.

 

MAZ clutch - what you need to know when buying

The MAZ clutch is the most important transmission mechanism of the Belarusian truck and bus and transmits torque from the engine to the gearbox.

Having problems with the MAZ clutch, do you need to replace and install a new one?

Which is better and where is it more profitable to buy a MAZ clutch?

If you come across one of these questions,

Please take a few minutes to read the article!

High-quality clutch kits installed on the assembly line in Minsk fully comply with the recognized reliability of the equipment of the Minsk Automobile Plant. However, any auto part is subject to wear and tear and has its own resource. For the smooth operation of tractors and dump trucks, it is necessary to take seriously the purchase of a release bearing and a MAZ clutch disc.

The composition of the single-disk friction clutch kit MAZ

The MAZ clutch assembly is an integral automotive component of a commercial vehicle, the device of which consists of:

Why do you need a clutch in a manual transmission?

The purpose of this node is the same for all commercial vehicles, whether it be MAZ, MAN, KAMAZ, URAL, GAZelle or PAZ. To find out the functions and general characteristics of couplings, go to the links:

Dump trucks, truck tractors and MAZ buses (a bit of history)

The decision to create the Minsk Automobile Plant (at that time an automobile assembly plant) dates back to 1944, which makes it one of the oldest in the CIS countries. From the first truck (timber truck MAZ-501) to the present, when a wide range of vehicles is produced for almost all types of economic activity, the main principle of design services is to provide the buyer with economical and high-quality services

The MAZ lineup includes:

• Truck tractors;
• Flatbed dump trucks;
• Utility vehicles;
• Scrap trucks;
• Manipulators;
• Garbage trucks;
• truck cranes;
• Timber trucks;
• Farmers;
• Combined machines;
• Other special equipment on MAZ chassis.

The production of passenger cars was launched in 1992 and during this time MAZ buses became widely known in many countries of the world. This is facilitated by the creation of special versions that take into account regional characteristics and requirements. In particular, a special bus model for Africa is being mass-produced.

Minsk Automobile Plant does not stop there, but confidently looks to the future, as evidenced by several facts:

• Fruitful work of the Center for Advanced Development;
• Attraction of foreign partners for the supply of double-disk and single-disk clutches MAZ Euro for the assembly line;
• Creation of joint ventures on the territory of the republic with major Asian and European corporations;
• Organization of production of new models, such as light commercial vehicles (LCV).

The reputation earned by many generations of automakers that produced MAZ trucks lives on today. MAZs can work both in the desert and in the Far North, quickly transport goods along the highway and feel safe on the off-roads of Siberia. The quality of heavy commercial vehicles depends on many factors, but perhaps the most significant are: production technology (assembly) and components.

MAZ clutch components and spare parts

All specialists involved in the production process systematically attend advanced training courses, including seminars from ZF Friedrichshafen AG, and machines and equipment meet the highest international standards.

To supply the auto component to the main assembly line in Minsk, an external manufacturer (manufacturing is not part of the structure of the Minsk Automobile Plant) undergoes multi-level testing. Only the best products from different countries are selected, combining high quality and low price. For example, engines are supplied from the Yaroslavl Motor Plant (YaMZ, Russia) and Weichai JV, gearboxes from ZF (Germany) and driven, clutch baskets and discs from Hammer Kupplungen (Donmez, Turkey).

The Sachs clutch is not currently supplied to the mainstream, but was original until 2012. German quality predetermines stable demand in the secondary market. It is not for nothing that in all spare parts catalogs and price lists of dealers there are Sax discs and clutches.

Applicability of MAZ clutches by models and manufacturers

So, after a certain period of time (a year and a half), your MAZ car will need to replace the clutch kit or some element. For self-selection, you can use the following clutch catalogs prepared by GAZ Quatro LLC:

For MAZ clutch manufacturers:

• Bags;
• Kuplungen hammer;
• E. Sassone.

Below is the applicability of clutches for MAZ models:

Each model can have different modifications, as well as a complete set of engines and gearboxes. For example, the clutch of a medium truck MAZ-4370 Zubrenok with a Deutz engine and a ZF S5-42 gearbox will consist of:

basket 3482125512 disc 1878079331

couplings 3151000958

Clutch MAZ Zubrenok of the same model, but with an MMZ engine and a Smolensk gearbox, will have a different bearing - 3151000079.

In this sense, when choosing a clutch, it is still better to contact the GAZ Quattro specialists and provide data from the PTS.

You can also delete the faulty one and rewrite the catalog numbers printed on the discs and bearings.

The most popular MAZ clutch spare parts by manufacturer

Molot was shocked

Pressure discs:

• 100032;
• 320118 (139113);
• 130512.

Slave:

• 100035;
• 103031;
• 100331;
• 130306;
• 130501.

Couplings:

• 000034;
• 000157;
• 130031;
• 068101;
• 068901;
• 202001.

Saxon

Baskets:

• 3482083032;
• 3482083118;
• 3482125512.

Driven Disks:

• 1878004832;
• 1878080031;
• 1878079331;
• 1878079306;
• 1878001501.

Release bearings:

• 3151000034;
• 3151000157;
• 3151000958;
• 3151068101;
• 3151000079;
• 3151202001.

E. Sasson:

Baskets:

Slave:

• 9216ST;
• 9269ST;
• 9274ST;
• 9281ST;
• 6187 st.

Couplings:

• 7999;
• 7995;
• 7994;
• 7998;
• 7997;
• 7993.

How to buy a MAZ clutch or features of choosing a reliable supplier

The first thing that comes to mind is to search the Internet for the cheapest offer for the sale of a MAZ clutch, read rave reviews on the website of a specialized aggregator, in a spare parts store or on a forum. Then pay quickly so that the equipment does not stand idle and does not wait for a receipt.

As a rule, such a purchase scheme will lead to additional expenses, loss of money, and most importantly, a MAZ truck or bus will be idle without making a profit.

But what other way to buy a MAZ spare part can be in the 21st century, when any information can be found in the Yandex search engine. This is a question that the buyer can ask himself and he will be right, but only partially.

An unscrupulous seller will praise the product, even if it is of the lowest quality. He just needs to pay, and how the clutch will work is of little interest to him.

With the above information in mind, let's try to build a correct exchange algorithm.

1. You can and even need to search for information on the Internet. However, ask yourself one question: if you are satisfied with your MAZ, then you should probably rely on the choice of specialists who know the production thoroughly, who have carried out a large number of tests and have chosen Hammer Kupplungen to be delivered to the assembly line. This is the only original from 2012.

Also of note are ZF pressure plates, driven bearings and Sachs, whose part numbers are familiar to dealers and end users alike.

If you are still looking for other analogues, you can buy quality spare parts under the E.Sassone trademark (Italy).

2. On the Internet, you can find websites of companies with online catalogs selling Hammer and Sachs clutches. But here, do not rush to make a purchase right away. There are cases when in fact there is no such link, but there is another one, often “without a name”. The unscrupulous seller says that he is exactly the same, almost from the production of Donmez or the ZF plant. Therefore, when deciding in favor of buying an original part, you should also choose a reliable seller who stocks the same Hammer Kupplungen and Saks clutches.

3. This advice probably applies more to fleet owners and retail chains. If there is a constant need for clutch discs at MAZ, do not be lazy to hold meetings, even if the company of interest is located in another city. See promotions and available products.

Establishing personal contacts will not only provide information in favor of a particular vendor, but also allow the vendor to assess the prospects for working with your company. Such meetings are likely to create a positive image with the supplier, and wholesale prices will be provided to the distributor immediately.

Everyone knows something, but we still focus on it. When replacing with a service station, be sure to adjust the MAZ clutch during installation.

Additional benefits of buying a MAZ clutch in GAS Quattro

So if you need to buy a new original MAZ clutch kit or its high-quality equivalent, GAZ Quattro is exactly the reliable supplier you need!

We follow the points of the algorithm.

We offer Hammer Kupplungen, Sachs and E.Sassone clutches as a manufacturer's distributor.

Our specialists are always ready for personal meetings and you can visit the warehouse.

It is equally important that you can use free technical support throughout the entire cooperation, and the constant availability of all clutch elements makes it possible to quickly buy with delivery and replace a faulty MAZ clutch part. This will allow you to operate a tractor, truck or bus as profitably as possible without downtime.

 

Clutch T-150 / T-150K: scheme, principle of operation, adjustment

The clutch of the T-150 and T-150K tractors is responsible for a smooth start. An important role in this is played by the serviceability of the module and its correct fit. How the clutch works on a wheeled and tracked T-150, what parts it consists of, how to replace spare parts and adjust - we will answer these and other questions in this article.

The role of the clutch on the T-150 and T-150K

The clutch is one of the key elements of the transmission. It absorbs most of the energy when selecting speeds and protects the tractor from overload by damping vibrations.

The principle of operation of this module in the T-150 and T-150K tractors does not differ from the mechanics of operation in passenger cars. It disconnects the engine from the transmission and also connects them when a gear change is needed. The need to install a clutch is due to the fact that the engine is constantly running, but the wheels are not. If the T-150 didn't have a clutch, the engine would have to shut down every time the tractor stopped. For starters, this assembly brings the spinning motor and static box back together, carefully connecting the shafts to each other. Due to this, the tractor starts without problems.

 

Clutches T-150 and T-150K: what is common and how do they differ

The clutch design on the tracked T-150 and the wheeled T-150K is as similar as possible, but there are still differences in the details of the transmission mechanism. The clutch housing of the caterpillar tractor is indirectly connected to the transmission housing. In the wheel modification, a spacer body is mounted between them. Because of this difference in installation, the T-150K's clutch shaft is longer than the T-150's.

Another difference in the design of wheeled and tracked tractor clutches is the servo mechanism that is installed to reduce the energy required to disengage the clutch. Depending on the modification, the amplifier is mounted:

• on pneumatics (in the version with wheels);
• on the mechanics (in the caterpillar version).

T-150 clutch mechanical servo diagram

The clutch release drive is schematically shown in this figure. The numbers indicate the following details:

1. pedal;
2. two-arm lever;
3. earring;
4. push;
5. spring element;
6. with traction;
7. support piece;
8. release housing bearings;
9. adjustment nut;
10. plug;
11. spring lock bolt;
12. fork;
13. ring of levers for pressing;
14. thrust element;
15. lever arm.

The spring of the mechanical servomechanism, when the clutch of the T-150 tractor is engaged, takes the pedal as far back as possible to the rearmost position. The pedal is held by the action of the booster earring on the smaller protrusion of the two-arm lever. When you press the pedal, the spring expands. After that, the spring is compressed, which leads to the rotation of the two-arm lever. The consequence of this is the disengagement of the clutch of the T-150 tracked vehicle.

Scheme of the pneumatic clutch servo T-150K

On the transmission diagram, the following numbers are indicated for disengaging the clutch of a wheeled tractor:

1. pedal;
2. lever arm;
3. communication;
4. tracking device;
5. outlet hose;
6. release bearing;
7. adjustment nut;
8. spring stop;
9. spring lock bolt;
10. fork;
11. release the lock bearings;
12. pressure lever ring;
13. lever arm;
14. supply hose.

The housing of the pneumatic follower clutch of the T-150K tractor is connected to the rod. In the clutch housing there is a pneumatic chamber connected to the tracking device by means of pipes.

Clutch basket for tractors T-150/T-150K

When you press the pedal, the plunger moves along its axis, opening the valve. Through the hole formed, compressed air enters the air compression chamber. This causes the cam link to move, which in turn stops the T-150K's clutch. When the pedal is released, the plunger relieves pressure on the valve and closes the hole, moving to its original position.

Design features of the clutch on different modifications of the T-150/T-150K

Over the years of production of caterpillar and wheeled tractors, many different modifications have been produced. And for different variations of special equipment, excellent clutch options were offered.

On most tractors of the T-150 series, dry-type friction double-disc clutches were installed, constantly closing. But you can find a single-plate clutch. Initially, the discs were made from alloys with a high asbestos content, but in recent years the composition of the material has changed.

Types of clutch and parts with catalog numbers for T-150/T-150K with engines SMD-60, YaMZ-236, YaMZ-238, Deutz, MAZ

To make it easier to navigate the variety of parts and their purpose, we offer the following table.

Part number	Name	Which engine is suitable for	Features
151.21.021-3	Clutch housing	installed with SMD-60 engine
150.21.022-2A	Cart
150.21.222	Compress glass bearings
01M-2126	Plug included	suitable for Deutz engine
01M-21C9	Disengage the clutch
151.21.034-3	Clutch shaft	suitable not only for the SMD engine, but also for YaMZ
150.21.0243А	Driven disc with pads
172.21.021	Clutch housing	spare parts are installed with the YaMZ-236 engine, double-disk clutch	it is suitable for Deutz engine
236T-150-1601090	Cart	for two discs
150.21.222	Compress glass bearings	the same as for docking T-150 with SMD-60
01M-21 C9	Disengage the clutch
151.21.034-3	Connecting shaft
150.21.024-3A	Driven disc (thickness 17) with overlap
172.21041	Clutch housing	YaMZ-236, single-plate petal clutch
181.1601090	clutch basket petal	for disk
171.21.222	Bearing release cup
172.21121	Inclusion fork
172.21.032/034	Clutch assembly/release mechanism/shaft
172.21.024	Driven disc with pads (thickness 24)

A set of parts for replacing the T-150 clutch with SMD-60

A set of parts for replacing the clutch T-150 on YaMZ-236

To replace parts in the clutch of the T-150 tractor with a Deutz engine, a basket with a disk and a bearing is assembled, which is very convenient. But if necessary, spare parts can be found separately.

Maintenance of the tractor clutch T-150/T-150K

Taking into account the details of the work of special equipment, the frequency of maintenance is determined not by mileage or time, as in cars and commercial vehicles, but by engine hours. In accordance with safety regulations, maintenance periods cannot be exceeded by more than 10%. Also, sometimes service intervals are determined by fuel consumption, but with an incorrectly tuned engine, these parameters can distort the picture.

For tractors T-150 and T-150K, the following types of maintenance are determined:

• IT - is carried out after each shift of work on the tractor;
• TO-1 - with an interval of 125 hours;
• TO-2 - with an interval of 500 hours (for older models, the resource is 240 hours);
• TO-3 - with an interval of 1000 hours.

Seasonal maintenance, conducted twice a year, is also provided as the T-150 prepares for the change of season.

Checking the operation of the clutch on the T-150 / T-150K

Checking the general technical condition, flushing and changing the oil in the clutch of T-150 tractors is carried out as part of the third ITV. To do this, start the engine, engage the gear and select the average speed of rotation of the crankshaft. A tractor moving on level ground slows down as long as the clutch remains engaged. During normal operation of the unit, the engine should be stopped. If you slow down but don't stop, the clutch discs will slip.

Clutch disc T-150K with traces of operation

The next step is a visual adhesion test. To do this, the tractor is stopped and the engine is turned off. If smoke is visible when the hatch is opened, a strong heating of the body is felt, a characteristic smell is present, etc., this also indicates disc slippage.

Flushing the clutch discs can correct the situation. To do this, stop the drive and manually shift the crankshaft. In the process, the discs are washed with kerosene or gasoline. After completely draining the technical fluids, the T-150 clutch discs should be checked again for slippage. If flushing does not solve the problem, the friction linings may need to be replaced.

 

How to adjust clutch on T-150/T-150K

The clutch of the T-150 and T-150K tractors must be precisely adjusted, since even with small deviations the system will not work correctly. How to adjust the clutch, let's see examples of common faults.

For proper operation of the clutch, there must be a gap of 0,4 cm between the release bearing and the ring of the release levers in the off state. The more the disc linings wear out, the smaller the gap. Over time, it can wear out completely, which leads to slippage of the clutch or its complete failure.

Excessively long distance also negatively affects the transmission of the T-150 tractor. There may be problems shifting gears and starting the car from a standstill. It also increases friction lining wear. Therefore, the main manipulation when adjusting the T-150 clutch is to set the correct clearance distance. Basic steps:

• loosen nuts;
• screw in or unscrew the stem (to increase / decrease the gap, respectively);
• tighten the locknuts;
• measure the distance.

Clutch housing T-150K

If by changing the position of the rod it is not possible to establish the desired play, it is corrected by adjusting the position of the clutch basket release levers. To do this, follow these steps:

• open the hatch and remove the cover;
• rotate the crankshaft, loosening the nuts in turn for adjustment;
• change the length of the rod, achieving the desired clearance;
• engage the clutch and evaluate the correctness of the adjustment;
• tighten the adjusting nuts.

The T-150 brake may also need to be adjusted.