Intermediate support for the cardan shaft MTZ-82 device, diagram

• Device of the cardan shaft MTZ-82.80
• Adjusting and maintaining the cardan drive

Intermediate support MTZ-82. Design, diagram, and necessary information for repairing the intermediate support of the cardan drive of the MTZ-82 tractor. Adjustment and maintenance of the cardan drive.

The role of torque conductor to the front drive axle, directly from the transfer case, is performed by the cardan drive. The main drive parts are shafts of the same name. The above parts are connected by a shaft support, called an intermediate one. Structurally and in size, cardan shafts do not have any fundamental differences from each other. The names (front and rear) are given solely by the location of the shafts.

Onboard bearing MTZ-82

Adjusting the bearings of the upper conical pair The axial clearance in the bearings of the axle shaft and vertical shaft is adjusted by tightening a special nut.

The outer teeth of the drive disks 28 are connected to the teeth of the differential cover and housing, and the inner teeth of the driven disks 36 are connected to the gears. However, in this case it is necessary that the Skf bearing rests against the shaft shoulder, and there is enough space for the extension of the adapter sleeve. With different load values, the spring either compresses or expands, and the pivot pipe moves along with the sprung part of the front axle and the vertical shaft relative to the drive gear and sleeve. To do this, replace the cuffs and disconnect the driveshaft. To do this, you need to remove the wheel and gearbox, of course, in complete assembly, see. A rotary lever with steering linkage rods attached to it and wheel fender brackets are attached to the gearbox housing. Next, adjust the axial clearance in the main gear bearings Fig. The lateral clearance in the lower bevel pair may increase due to wear or destruction of the bearings of the drive gear of the MTZ front axle gearbox. With correct initial adjustment and normal operation of the tractor, the axial clearance in the bearings is within 0. However, if you follow the above recommendations for maintenance of the front axle, then the risk of failure of most parts is reduced to a minimum level. The driven gear 7 is secured to the centering belt and splines of the differential housing 10 and is held against axial movements by a nut 6. Then the cup with the drive gear is pressed out of the axle housing. found the cause of the failure of the MTZ 82 front axle

Dismantling and repair of the power take-off shaft of the MTZ-80, MTZ-50, YuMZ-6 tractor

If the cam clutch is broken, you should disconnect the gearbox from the rear axle and replace the components. The ring gear has internal teeth and is integral with the drive shaft. Most likely, it has exhausted its resource and has fallen into disrepair.

When the independent drive is turned on, the rotation is from the internal drive shaft, located inside the secondary shaft of the gearbox, through a 22 cm coupling. Winch and drive device of a ZIL vehicle. Promotional offers:.

Connect the rod to the lever using a cylindrical pin and pin it well.

Unscrew bolt 9, freeing spring 6. PTO slippage indicates that the springs or levers encounter additional resistance when they move without sufficient lubrication in the mechanisms.

First, move the MTZ power take-off shaft control lever to a position in which the technological holes in lever 5 of the shift shaft and the rear axle are aligned, and screw the installation bolt 1 into them. Pressing out the bearing from the switching drum 1 - bearing; 2 - drum; 3 - inertial puller. It is possible to hold the reduction gear lever in the neutral middle non-fixed position to facilitate engine starting at low temperatures. How many revolutions does the PTO of the KUBOTA tractor have? There's an answer!

Read additionally: brakes on MTZ-82 assembly and disassembly

Niva tractor bearings

According to the shape of the ends of the satellite axles, sockets-grooves are made in the differential housings. If the bolts can be tightened, this means that the reason for the increased axial clearance of the bearings is the loosening of the bolts. After this, remove the 9 cm top cover.

In this case, the thickness of the remaining packages should be the same. The axial clearance in the bearings of the vertical shaft and axle shaft is adjusted by tightening the nut. Each side of the differential has three friction pairs. Next comes materials from reference books. MTZ bearings Category: Date: 26 Feb MTZ universal row-crop tractors have been produced since the mid-seventies of the last century and continue to be produced to this day; they are distinguished by high performance, cross-country ability, reliability and are widely used not only in Russia and neighboring countries, but also beyond . The permissible value of the indicator readings when measuring the gap in the teeth of the upper and lower pairs of gears, which determines the possibility of further operation of the gearbox without adjustment, is 1.0 mm. An incorrectly selected thickness of the gasket package 20 does not allow the contact patch to be adjusted; as a result, even with normal lateral clearance, the teeth of such a pair can quickly wear out. It is advisable to dismantle large bearings using Skf hydraulic nuts. The semi-axial gears with their end surfaces rest on the ends of the pressure cups. Upwards - with the support collars of the sleeve 47 and the seal housing. MTZ-82 replacement of the MTZ-52 final drive sleeve

Activities

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When the gear moves in the axial direction, the indicator readings should be within 0.01–0.10 mm.
Installation of adjusting rings 1 - adjusting rings; 2 — final drive gearbox cover Fig. The toothed rims of the vertical shaft 46 and the axle shaft 12 form a conical upper pair. It is tightened by turning the outer races of the bearings so that they take the correct position. We hope that this article was useful to you. The differential consists of two housings 10 and 11, which house four satellites 19 on two axes 18, two semi-axial gears 15 and two pressure cups 9, as well as friction disc packages 8 and various pullers are also used for dismantling.

The axial clearance in the bearings of the vertical shaft and axle shaft is adjusted by tightening the nut. Front axle gear gear To adjust the drive gear, the first step is to check the fastening nut, or rather, its condition. Afterwards, the drive gear is pressed into the glass and the assembly with the cuff itself is removed. Removing the main gear and differential of the gearbox of the driving front axle of the MTZ 1 tractor - main gear; 2 — differential; 3 - housing The lateral clearance is adjusted by changing the thickness of the gasket package located under the main gear bearing housing. Front axle repair. pin sleeve remover MTZ 82

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You also need to check and tighten fastening connections from time to time. The drive gear 25 of the lower bevel pair is mounted on two ball bearings in the housing bore

To fix the problem, remove the wheel along with the final drive gearbox, remove the gear and radial bearing, which is secured with mounting bolts. The force of the steering linkage when turning the tractor is transmitted through the swing arms and steering rods to the gearbox housings, which rotate relative to the kingpin pipes 13 along with the wheels. To do this, remove the wheel, drain the lubricant from the gearbox, disconnect the gearbox cover together with the driven gear from the housing and tighten the bolts until they stop.

This design allows you to continuously adjust the track of the front wheels.

Wheel gearbox of the MTZ 82 tractor and its adjustment

In this case, the thickness of the remaining packages should be the same. When tightening the bolts of the flanges of the cover and the axle housing after replacing the gaskets, you need to rotate the differential by flange 5 so that the bearing rollers take the correct position. From axial movements and rotation in the front axle sleeves, the housings are fixed with wedges.

The relative arrangement of the parts of the main gear of the MTZ drive axle 1 - drive gear; 2, 5 — bearings; 3 — adjusting shims; 4 - glass; 6 - cuff; 7 — oil seal cage; 8 - flange; 9 — nut Traces of oil on the inner surface of the wheel rim or disk flange indicate destruction of the wheel axle seals. Then unscrew the two radial bearing mounting bolts, remove the driven gear and press out the wheel flange (Fig. The axles are stopped from axial movements and rotation of the axle by bars. Various pullers are also used for dismantling.

If one gear fails, the pair must be replaced. Replacement of bearings Design measures that facilitate the dismantling of bearings: And the presence in the shaft shoulder of grooves for installing a puller, eliminating the risk of damage to the shaft journal by the bearings; B three threaded holes for dismantling screws, which is preferable to using a hammer and drift; Into the grooves for removing the outer ring of the bearing using a puller.

If an increased gap is detected, it must be eliminated. Difficult rotation of the steering wheel when turning when the power steering is in good working order indicates failure of the thrust bearings or jamming of the telescopic connections of the suspension. Replacing the MTZ 82 front axle bearing

Source

PTO adjustment

When adjusting the power take-off shaft on the MTZ-80(82), the following sequence must be observed:

1. Set the eccentric axis to its original position, so that the line marked on it is on the right in a vertical position.
2. Secure this position using locking plates.
3. Disconnect the rods.
4. Unscrew the bolts on the glass.
5. Release the spring.
6. Remove the hatch cover from the rear drive axle to gain access to the tension screw head.
7. Move the lever to neutral and secure the position with the bolt.
8. Remove the locking plate.
9. Screw the stop bolt into the glass.
10. Move the lever to the “On” position.
11. Install the traction.
12. Adjust the lever play.

After the adjustment is completed, it is necessary to return all the parts to their places in the reverse order and tighten the bolts with locknuts.

If the shaft begins to slip or it is unstable, or increased force is required to turn it on, or other similar problems, it is also necessary to adjust the band brake mechanism:

1. Place the handle in synchronous mode and lock it in this position.
2. Unscrew the nut and remove the plate from the slots.
3. Using an open-end wrench, turn the axle mechanism clockwise to the desired torque.
4. Return the plate to its place and tighten all the nuts.
5. Remove the retaining bolt from the handle.

Bearings MTZ-82

Category: | Date: 26 Feb 2013

The MTZ-82 universal row-crop tractors have been produced since the mid-seventies of the last century and continue to be produced to this day; they are distinguished by high performance, maneuverability, reliability and are widely used not only in Russia and neighboring countries, but also beyond.

The MTZ-82 tractor is a modernized model of the MTZ-52 tractor, which has already been discontinued. MTZ-80 and MTZ-50 are also very close to these tractors. The list of bearings used in all these tractors is very similar. The main difference between these models is that the MTZ-80 tractor has only rear-wheel drive, while the MTZ-82 tractor has all-wheel drive (front axle bearings are added accordingly). Based on the MTZ-82.1 tractor, special equipment for municipal use is produced. These are the Belarus MUP-750 and Belarus-82MK tractors, the BELARUS EP-491 backhoe loader, various combines, for example, RKS-4 and RKS-6, MKK-6, as well as the SPS-4.2A beet loader-cleaner. The bearings used in them are practically the same as in the basic model, with the exception, of course, of additional equipment.

The tractor is manufactured according to a traditional layout for its family: a semi-frame design with load-bearing housings for transmission units, a front-mounted engine, rear drive wheels of increased diameter, front guide wheels of reduced diameter. Since tractor components can be subject to high loads, and its repair is quite labor-intensive and can take a lot of time (it happens that repairs are necessary right in the field), it is recommended to use reliable and inexpensive bearings made in Russia. It is not recommended to use Chinese products (including those with Russian markings, of which the vast majority), which can work for quite a long time, or may fail immediately after repair. To clarify the origin of this or that marking on bearings, read this article.

There is also one more nuance - in some reference literature (especially old ones), bearing numbers are often indicated with a lot of additional designations, which are often completely unnecessary information, for example, the type of lubricant, minor design features, etc. Many inexperienced buyers and suppliers, demanding an exact match , and going through many companies selling bearings, they often become victims of “entrepreneurs” selling illiquid products produced back in the 60s and 70s of the last century. Such products, most likely, have been installed several times already, and they are given an acceptable appearance using a variety of abrasive tools. It makes sense to request additional designations only when you understand what they mean; it is much more important to ask the manufacturer and choose products from well-known Russian factories, which, as a rule, produce only one or two modifications (although in old catalogs there are much more for each type). The exception is bearings with a cage made of steel (KM, K or no designation) or brass (L, LM, M, depending on the type) (the latter are much more expensive), usually roller.

List of main bearings used in MTZ-82 tractors

Where can I buy

It is most profitable to buy bearings for the MTZ-82 tractor not from those companies that sell spare parts for special equipment (they are mainly engaged in resale, and usually sell Chinese bearings at the price of high-quality Russian ones), but from specialized bearing companies, preferably representatives of factories -manufacturers (prices here are minimal, deliveries are direct, there is no need to fear that they will sell you illiquid stock or low-quality Chinese bearings, including counterfeit ones), the list is here. Sales are carried out both wholesale and, in most cases, retail.

Source

Rear PTO diagram of MTZ-80(82)

This diagram shows:

1 - Plate, 2 - PTO cover, 3 - Gasket, 4 - Axles, 5 - Rear PTO shaft, 6 - Bearings, 7 - Brake bands with linings, 8 - Bearing, 9 - Bushing, 10 - Drum, 11 - Sun gear , 12 — Carrier, 13 — Planetary gear, 14 — Planetary gear axis, 15 — Bearing, 16 — Rocker gear, 17 — Cup, 18 — Bearing, 19 — Retaining rings, 20 — Shaft, 21 — Clutch, 22 — PTO housing.

You can download the diagram.

The MTZ-82 PTO drive can be either dependent (rotation speed depends on the speed of the tractor) or independent (rotation speed depends on the operating frequency of the engine itself).

With a dependent drive, the PTO is connected to the drive gear of the 2nd stage of the tractor gearbox gearbox. In this case, the PTO rotation speed will be 3.5 revolutions per meter of travel. This drive can only be engaged when the tractor is standing.

With an independent drive, the PTO is connected to the engine flywheel, and the rotation speed no longer depends on the speed of the tractor. The independent drive has two rotation speeds: 540 and 1000 rpm. You can turn on the drive with the engine off or at minimum speed.

The drive type is switched from the cab. When turning the switch clockwise, the independent drive is turned on, and counterclockwise, the dependent drive is turned on. In the neutral position, the power take-off shaft is switched off.