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. 1st gear gears have straight teeth, 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.
The box lubrication device is combined with the transfer case. Lubricant from the transfer case passes into the UAZ gearbox through a double-row bearing (angular contact) and the existing drain device, after which it returns through the drain hole.
UAZ gearbox repair
The manual transmission is the most important transmission unit of the UAZ 469 vehicle . The UAZ 469 gearbox has a responsible and fundamental task - monitoring the variability of the amount of engine torque and carrying out transmission from the engine to the drive wheels of the vehicle. The UAZ 469 manual transmission has a fairly long service life. This does not mean that the gearbox does not need repair.
Proper use of the vehicle makes it possible to go without repairs for a long time, but if the operating conditions are not met, the UAZ gearbox components wear out, which inevitably leads to repairs.
Repairing the UAZ 452 Gearbox Cover with Your Own Hands
If you are the owner of a UAZ and you suspect that the gearbox is failing, then you should definitely take care of repairs. The device fails when the driver must hold the gear lever in motion as they begin to shift on their own (to prevent this, drivers tie them together with ropes). From time to time you can hear a creaking sound.
To familiarize yourself with the repair technology, read about repairing the UAZ 452 gearbox yourself. First you need to find the type of UAZ that is on the car. Despite the differences between the car models, they have similar gearboxes. Therefore, we can assume that the repairs are carried out almost identically. To do this you will need a set of wrenches, some tools and auxiliary tools (listed below).
In most cars of this type, both parts are one piece. The weight of this device reaches 75-82 kg, so you will need an assistant. If the vehicle being repaired has a protective cage installed, you can use a hand winch to remove the UAZ 452 gearbox for repairs yourself.
The car should be parked in a uniform place because then you will have to move it 0.5 m forward or backward. First drain the oil. Both boxes have the same volume, but the drain plugs are separate. While the oil is spilling, remove the front seats and unscrew them, and then remove the floor hatches on the floor of the car. Then it’s time to remove the speedometer rods.
When oil leaks, replace the drain plugs. Under the handbrake drum there is a cross member of the frame that must be removed. Disconnect the front axle clutch and unscrew the front universal joint. If you find a nut on it, the item should be removed.
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Loaf Purchase and delivery? gearbox cover
If the UAZ 3303 gearbox is repaired, you should take care of the clutches. The vehicle moves 0.5 m (in any direction) and the rear propeller is removed through the hatch. Disconnect the muffler from the junction box and release the clamp on it. Then remove details like:
- clutch pan;
- installing a thick fitting from the input shaft (on the right side of the socket);
- 4 bolts holding the clutch plugs;
- cylinder rod adjustment and fork.
The gearbox is wrapped with rope and suspended. The following parts have been removed:
- pillow bolts;
- nuts holding a box with a bell.
With these engine actions, when they independently repair the UAZ 452 gearbox, you need to support the jack. When the box is free, it is lowered and removed from under the car. The levers must have been removed previously. The bells must be replaced with new ones.
If you need to repair a UAZ Patriot checkpoint, then you need to take into account that placing the box and bell there is reversible. This also applies to the arrangement of the rods. But in general, the development of the UAZ 452 gearbox for repair can be used independently.
Remove the bolts and nuts and disconnect the transmission and its gearbox. There's a sealant-reinforced spacer between them, so you'll have to tap the bracket a couple of times to secure the unit to the frame.
First, remove the input shaft cover and unscrew the left nut located on it (see Fig.). Now you need to remove its bearing. If this fails, it must be replaced. Its “brother” roller is installed inside the shaft and requires replacement. The retaining ring is then removed from the output shaft. The double row bearing is unscrewed. The shaft must be knocked out and the part replaced.
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Next comes the third gearbox. Copper synchronizers have been replaced with crackers. Then the opposite happens. Unscrew the front intermediate shaft support box. Don't knock or knock on it: it's made of silumin and may crack.
Avoid breaking the rubber gasket as it is difficult to reach. The removed shaft was replaced with gears and all bearings. Then reassemble the box in reverse order. When the roller is installed on the input shaft, it is heavily lubricated with "Litol". All components and parts are placed in place to avoid any mistakes.
Loosen the flange and shaft nuts and remove them. The handbrake must be checked for serviceability and, if necessary, replaced. Remove all covers and replace seals. Remove the speedometer and fan rod drive (to be replaced). Check the bearings and replace if necessary.
Assembling the transmission housing is carried out in the reverse order. These steps are repeated when working with other types of cars of this brand (including repairing the UAZ Hunter gearbox). Attach the bracket to the frame. Place the transmission housing on the handbrake drum and, holding the transmission, lower it into place through the PTO.
Before this, a lock washer is installed on the cutting shaft. Tighten the bolts and nuts, put on the lever cover and inspect the operation of all gears. Replace the output bearing, remove the arms, pull the entire assembly under the car and hang it on a cable. Place the exhaust bearing onto the box and attach the spring. Then insert the input shaft and clutch. This is done as follows:
- move the box down and up;
- turn the engine using the flywheel;
- put the unit in place;
- strengthen the pillows.
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Why does the rear gearbox spill on a UAZ?
Replace the oil splines in the grooves and forks of the input shaft, replace the speedometer drive, cardan, parking brake, cover. You must go back to the frame cross member and secure the muffler bracket to the transmission housing.
Handbrake adjustment and adjustment, oil change. When repairing the UAZ-Okhotnik gearbox, not only these steps will be useful, but also adjusting the rods. Screw the hatch to the floor, place the seat. The repair of the UAZ 452 gearbox was carried out independently.
To work you will need:
- wrenches from 10 to 22;
- bearing puller;
- screwdrivers (phillips and flat);
- platypus (with a curved nose and a straight one);
- copper pin;
- a piece of pipe as a key handle;
- chisel and rod;
- hammer and hinged blade;
- small jars for collecting nuts and screws;
- wrenches from 10 to 36;
- lithol;
- reddish sealant;
- set of gaskets and locks for the car.
To properly repair the UAZ 452 gearbox yourself, you must strictly follow the instructions above. Difficulties in repairing other models of this brand can lead to different locations of the main parts of the machine, for example, connecting rods. Oil changes must be carried out in accordance with the specifications of this type of vehicle.
Do-it-yourself repair of the UAZ 469 gearbox. a feasible task for a person who wants to save money. Other UAZ owners (for example, a UAZ loaf) can isolate and repair the UAZ box, taking into account the difference in parts and the location of the connecting rods.
Source
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?
- Using a car in extreme conditions.
- Operation of a UAZ 469 with a faulty clutch.
- Using low-quality oils for the drive axle.
- Carrying out maintenance of the gearbox by a non-professional.
These are the main prerequisites that may cause urgent repairs of the UAZ 469.
To repair a gearbox you need a large set of equipment.
- Open-end wrenches in 2 copies (for 10, 12, 13, 14, 17, 19, 22). Using a 14 wrench you need to unscrew the rear shaft from the transfer case flange. If you use this key incorrectly, you can create huge problems for yourself.
- Socket wrenches.
- Professional wrench for flat nuts.
- Regular and Phillips screwdrivers.
- Duckbills for removing and putting on circlips.
- Metal pin for knocking out individual parts.
- To quickly unscrew nuts and bolts, you need a small piece of iron pipe.
- High quality core and chisel.
- Mounting blade.
- Heavy hammer.
- A large number of cans for bolts and nuts to sequentially place parts during work.
- Bearing puller.
- A car owner who pays attention to his car can identify problems with the gearbox.
