Gearbox UAZ 469, 31512, 31514, 31519

Here is the third cracker that crawled out:

Having picked out all the halves of the crackers, the soldiers and the springs, we pick out the remaining three halves of the crackers:

Now everything is fine in the gearbox, everything turns on and off:

Clean the gearbox cover with solvent and apply sealant:

We also clean the interface between the cover and the gearbox with a solvent:

After waiting the required 15-20 minutes for the sealant to be ready, we put the gearbox cover in place:

Apply sealant to the gearbox oil drain plug and wait until it dries:

While the plug was drying, I tightened the parking brake lever:

We also apply sealant to the gear shift lever cover in advance:

The sealant on the plug has dried, tighten the plug and fill in the remaining new oil:

Judging by the canister, there is about 1.5 liters left. no more oil. But I didn’t want to fill in the old one...

The sealant on the gear shift lever cover has dried, put the lever in place.

Use a solvent to clean the interface with the lever cover:

Fill the lever cover with lithol:

Well, screw on the cover with the gear shift lever:

Well, that's all... I went for a ride and checked...

It all took three hours...

I drove it for a ride, checked it... Well, it drives, everything turns on and off. But blah, it turns out it’s not convenient to drive without synchronizers, from 2nd to 3rd and from 3rd to 4th you have to switch with double clutch release, without this the inclusion is accompanied by a little “grrrr...” But with 4th To switch to 3rd, double squeezing doesn’t help, you still need to apply more gas. inconvenient of course...

Well, that's all. Let's get used to double squeezing...

The UAZ 469, produced by the Ulyanovsk Automobile Plant, specializes in transporting people and goods. The all-terrain capability of this car allows you to drive on any road.

General characteristics

UAZ gearbox

A gearbox is a car's gearbox. The UAZ 469 has a manual 4-speed gearbox equipped with inertia-type synchronizers. They are designed to engage gears without noise or rumble. Synchronizers help equalize the speed of the connecting teeth before engaging. The rotation speeds of the motor and wheels do not match; a synchronizer is needed to combine them. In addition, the gearbox allows the car to move in reverse.

The UAZ 469 gearbox consists of the following parts:

• input shaft;
• front cover;
• special purpose nut;
• auxiliary fasteners;
• auto laying;
• ball bearings;
• secondary shaft drive bearing;
• crankcase;
• coupling for connecting III and IV gears;
• 3rd gear gear;
• 2nd gear gear;
• clutch for connecting 1st and 2nd gears;
• 1st gear gear;
• secondary shaft;
• fastening washer;
• gearbox spacer ring;
• mounting bolt;
• washer for fastening;
• intermediate shaft;
• reverse gear axis;
• reverse gear;
• cork;
• block of gear wheels driving the intermediate shaft and 3rd gear;
• lid.

The device of the UAZ box

If you are interested in the UAZ gearbox diagram, it is easy to find it in photos and drawings posted on various sites on the Internet.

4 studs are screwed into the clutch housing, on which the gearbox is attached. The intermediate shaft drive has gears that are in stable mesh. The 1st gear gears have straight teeth, the 2nd and 3rd gears have spiral teeth. They are mounted on the drive shaft, supported by needle bearings. The drive shaft has 2 supports. When engaging second gear, the role of the clutch is performed by the first gear. Activation of reverse and first gear occurs due to the movement of gears. Gearbox ball bearings. To prevent movement along the axis, the gears are secured with rear bearings. The rear bearing of the intermediate shaft is integrated with the shaft itself using a bolt.

The switching device has 3 forks attached to the rods with locking screws and located in the side cover. The ball-shaped stopper for neutral position and engaged gears has a rod. The locking blocks located between the rods do not allow connecting 2 gears at the same time. The support contains a lever that helps move the forks. It itself is pressed by a spring to the supporting spherical surface. The boot placed on the lever prevents water and dirt from entering the device. To prevent accidental engagement of reverse gear (the driver may simply get confused), this device contains a fuse - a plunger, which is equipped with a return spring and a ball.

Transmission feature

On the UAZ 469, the gearbox is mechanical, designed for 4 stages. At the same time, the 4-speed gearbox is equipped with synchronizers. They are necessary for speed equalization. There are shafts, with the primary shaft based on two supports. The intermediate shaft drive gears are helical. To absorb the occurrence of radial and axial loads during movement, the rear shaft support includes a double-row angular contact ball bearing. This gearbox allows the vehicle to move in reverse. The vehicle is equipped with a transfer case. The UAZ 469 transfer case includes drive axle shafts and gears, which have a long service life.

UAZ 469 gearbox diagram

Transfer case diagram

The advantage of a manual transmission is that it is designed to last a long time. A car that has off-road qualities and is equipped with a manual transmission is excellent for use on rough terrain.

Gearbox UAZ 469, inside view

Gearbox wear and repair

In what cases does the operation of a machine entail wear and tear on parts of the box, resulting in the need for repairs?

1. Using a car in extreme conditions.
2. Operation of a UAZ 469 with a faulty clutch.
3. Using low-quality oils for the drive axle.
4. Carrying out maintenance of the gearbox by a non-professional.

These are the main prerequisites that may cause urgent repairs of the UAZ 469.

Synchronizers can fail if your car has rough gear shifting. The next reason may be a decrease in the oil level in the crankcase or its absence. Repairing the box requires high-quality preparation of parts, grinding and boring them. This is a complex process, not everyone can do such work themselves.

Before moving on to repairing the UAZ 469 gearbox, you need to study the relevant literature. Don’t just look, but read and pay attention to what is said about the left-hand thread, the location of washers, stops and small details. To remember the chronological sequence of actions during the repair process, you can make a cheat sheet for yourself.

For car gaskets, it is advisable to purchase imported sealant. It is of better quality and more reliable. To lubricate rotating parts, it is best to use Litol - this is the most affordable product.

Repair of the gearbox can only be entrusted to a highly qualified specialist who has professional tools, knows the structure and diagrams of the UAZ 469 gearbox and is able to carry out repairs in the shortest possible time.

Models from the Ulyanovsk Automobile Plant are distinguished by their off-road capability. The UAZ transfer case improves the vehicle's cross-country ability and allows you to move on surfaces of varying quality. On the UAZ 469, the transfer case is switched on mechanically from inside the car.

Carrying out diagnostics of the UAZ 469 gearbox

The car is subject to diagnostics if its handling has deteriorated. At the same time, squeaking noises may be heard when changing gears. Also, it is necessary to check the condition of the box if the gears activate spontaneously. In some cases, it is necessary to replace bearings and gears to solve the noise problem. If gear shifting is difficult, the synchronizers are checked. The main reason why there is a need to replace the components of the box on an SUV is their natural wear and tear.

One of the signs that the transfer case should be checked is if the grip of the wheels on the road has deteriorated, and noise from its side has begun to increase. Improper use of the vehicle leads to repair of the gearbox on the UAZ 469. In particular, it is necessary to timely change the transmission oil.

Another problem that a UAZ driver may encounter is an oil leak from the gearbox. This manifestation is the result of an increased oil level in the gearbox. Also, if water gets into the system while filling the box with new fuel, the motorist will soon face the problem of fluid leaking from the gearbox. However, it is not only the use of low-quality oil that can cause leakage, since there may be a crack in the crankcase or in the UAZ 469 gearbox cover.

Thus, the high-speed gearbox of the UAZ 469 car includes many working units that ensure optimal functioning of the automotive system. Taking this into account, the owner of the vehicle must subject the car to regular maintenance. This will reduce the risk of premature repair of the UAZ 469 gearbox.

Node purpose

The UAZ 469 transfer case is used to engage all-wheel drive. The mechanism is two-stage. This allows you to double the speed range for forward and reverse movement. Reducing torque when driving off-road reduces wheel slip.

UAZ 469 has a constantly engaged rear axle. The front axle is pluggable. Its inclusion is provided by the manufacturer for driving on low-quality surfaces.

IMPORTANT: It is prohibited to use the vehicle with the front axle constantly engaged when driving on high-quality road surfaces. Failure to comply with this rule will result in damage to transfer case components or jamming of rotating parts.

Gearbox UAZ 469

The UAZ 469 gearbox is used to change the torque from the engine through the clutch. The UAZ 469 gearbox converts the rotational energy of the crankshaft into forward motion of the transmission. Thanks to the four gears that the gearbox has for moving forward and one in reverse, energy is transferred to the wheels. The car can move in any direction. The UAZ 469 transmission is divided into two types according to the type of gearbox - old model and new model.

UAZ 469 transfer case

The transfer case is rigidly mounted on the rear of the gearbox housing. The rear of the transfer case is equipped with a parking brake. It is made in the form of a drum and pads with friction linings.

When the parking brake is applied, the release device presses the shoes against the drum, blocking the rotation of the rear axle driveshaft. After releasing the parking brake lever, the pads move in the opposite direction under the action of power springs. You can also read about UAZ “Cargo”.

RK Corps

The transfer case housing consists of two parts. To prevent lubricant leakage at the joint, the parts are sealed with gaskets. Oil seals are installed on the shafts coming out of the sealed housing. They prevent lubricant from leaking out when the car is moving.

REFERENCE: Under load, the lubricant and parts of the lubricant heat up. To avoid breaking the seal of the housing, the manufacturer equipped it with a breathing valve. The device provides communication between the device cavity and the atmosphere.

Drive mechanism

The RK mechanism consists of:

• Rear axle shaft. Rigidly connected to the rear driveshaft of the car. Mounted on ball bearings. They allow the shaft to rotate freely;
• Front axle shaft. Drives the front driveshaft. Fastened with a nut;
• Intermediate shaft. Necessary for engaging the front axle or downshifting;
• Shift forks. Used to move gears when turning the front axle on/off and to downshift. The movement of the forks is carried out along specialized rods. Each fork is equipped with a locking mechanism that prevents spontaneous movement of the product along the rod.

Control mechanism

The unit is made in the form of a metal cover. It is bolted to the transfer case housing. Two levers are installed in the cover. One serves to connect the front axle, the second to reduce the torque transmitted from the gearbox.

REFERENCE: The UAZ 469 transfer case diagram shown above is distinguished by its reliability and high service life. With normal maintenance, the unit can be used for a long time, regardless of operating conditions.

Start of repair of the UAZ 452 gearbox on your own: gearbox, transfer case

On most car models of this type, both parts are one. The weight of such a unit reaches 75-82 kg, therefore an assistant is necessary. If the car being repaired has a safety cage, then there is an option for removal for repairs

Use a manual winch at home for the UAZ 452 gearbox.

The machine needs to be placed on a level place, because then it will have to be moved 0.5 m forward or backward. First drain the oil. Both boxes have the same volume, but the plugs for draining the water are separate. While the oil is pouring out, you need to remove the front seats and unscrew them, and then put the hatch halves on the floor of the car. Next comes the turn of removing the speedometer rods.

When the oil has drained, screw the drain plugs back to their destination. There is a frame cross member under the handbrake drum that needs to be removed. Disconnect the front axle clutches and unscrew the front universal joint. If you find that the nuts are weak, then you need to remove this part.

If a UAZ 3303 gearbox is being repaired, you need to be careful with the clutches. The car is moved 0.5 m (in either direction) and the rear cardan is removed through the hatch. Disconnect the muffler from the transfer box and loosen its existing clamp. Then the following parts are removed alternately:

• clutch pan;
• fastening the oiler from the input shaft (it is located on the right, on the bell);
• 4 bolts that hold the clutch fork housing;
• adjusting the cylinder rod and fork.

The transfer case is wrapped with a rope and suspended. Remove the following parts:

• pillow bolts;
• nuts holding the bell box fastening.

During these actions, when repairing the UAZ 452 gearbox at home, the engine needs to be supported with a jack. When the box is free, it is lowered and removed from under the car. The levers must be removed in advance. The bell pins need to be replaced with new ones.

If you need to repair the UAZ Patriot gearbox, then you need to take into account that the location of the box and bell is reversed. This also applies to the location of the rods. But the development of a DIY UAZ 452 gearbox for repair is completely suitable for use.

Transfer case switching diagram for UAZ 469

The transfer mechanism is controlled remotely from inside the car. downshift or front axle engagement is forced. This is done using levers installed next to the manual gearbox control.

The front axle drive is controlled by the right lever (in the direction of travel of the vehicle). To turn on the drive, the driver moves the lever to the extreme forward position. To turn off, the lever moves in the opposite direction. The front axle is controlled when the clutch is disengaged.

The left lever is used to reduce torque transmission. The control has three fixed positions:

1. Straight. The lever is in the extreme forward position. In this case, the transfer case does not change the gear ratio from the gearbox;
2. Neutral. The lever is set to the central position. Torque is not transmitted to the driving axles of the vehicle;
3. Downward. The control is switched to the rearmost position. The transfer case mechanism reduces torque.

ATTENTION: The UAZ 469 transfer case switching diagram, which is shown above, is equipped with a lock against involuntary downshifting. The lock is made in the form of a ball retainer, which does not allow engaging a lower gear without the front axle drive.

The process of changing the oil in the transfer case of UAZ 469

Before starting work, it is necessary to warm up the transmission. To do this, drive a car for 2 to 4 kilometers. When heated, the viscosity of the oil decreases and it will be easier to drain it from the crankcase.

Changing the oil in the UAZ 469 transfer case is carried out in a certain sequence:

• Place the vehicle on a pit, overpass or lift. Some motorists prefer to carry out the procedure while lying under the car on a specialized tray;
• Clean oil stains and dirt in the area of ​​the drain and filler holes. A metal brush is used;
• Remove the filler plug. Necessary to prevent the occurrence of a vacuum in the crankcase when draining liquid;
• Place a container to collect used lubricant under the drain hole. The container must have a volume sufficient to collect waste liquid. It is better to choose a vessel with a wide neck. A bucket or cut plastic canister will do;
• Remove the drain plug. To prevent the plug from falling into the waste oil container, it must be held firmly;
• Wait until the fluid drains completely from the crankcase;

• Clean the drain and filler plug from dirt and metal particles;
• Install the drain plug;
• Fill in new lubricant using specialized tools. Syringes or pumps are used;
• Install the filler plug.

REFERENCE: When carrying out the oil change procedure on a UAZ 469, it is recommended to check the functionality of the breathing valve (breather). Malfunction of the product can lead to depressurization of the crankcase.

After replacement, it is necessary to eliminate oil leaks formed during the work. A rag is used for this.

Safety precautions when performing work

To avoid injury when changing the oil in the transfer case, you must:

1. Install wheel chocks under the vehicle wheels. This will prevent the car from rolling spontaneously;
2. When dismantling the drain plug, it must be kept at a distance from the transfer case. Hot oil from the transfer case can cause burns if it comes into contact with the skin;
3. Personal protective equipment such as gloves and goggles should be used to protect eyes and skin.

From the above it follows that the UAZ 469 transfer case is necessary to improve off-road performance. The design of the RK allows you to connect the front axle and reduce the torque from the gearbox. For normal operation, the unit must be serviced regularly.