Repair of the rear axle reducer on VAZ 2107

Torque from the gearbox is transmitted to the "seven" rear wheels through the rear axle reducer. The gears installed in the gearbox are wearing and begin to make noise when driving. In this case, you will have to change or repair the VAZ 2107 rear axle reducer.

Where is the rear axle reducer

As can be seen from the name, the VAZ 2107 reducer is in the rear of the car. It is placed inside the rear axle, and is screwed to it by eight bolts. On the other side of the gearbox, to the flange, the cardan shaft of the car is screwed.

Signs of the Most Reducer of the Rear Bridge VAZ 2107

Reducer is a fairly expensive part, and its repair is a time-consuming and complex process. Therefore, you must first make sure that the cause of noise is in the gearbox malfunction. This can be done as follows:

• Choose a smooth section of the road and gradually accelerate on it from 20 to 90 km / h. During movement, you should carefully listen and celebrate the appearance and disappearance of extraneous noise from the rear axle gearbox.
• Let go of the gas, starting to slow down the engine. While the speed is reduced, you should also note the moments when noises appear and disappear.
• Open the car to about 100 km / h and, switching to neutral transmission, drown out the engine. While the car rolls over inertia, note the presence and disappearance of noise.

Make sure or the absence of a mono problem like this:

• Put the car by fixing the anti-digit shoes.
• Raise the jack, hanging the rear axle.
• Turn the engine, turn on the speed and add gas to the wheels rotate without load, and the speedometer showed the same speed that when testing on the go.

If when working without load noise remains the same as under load, the problem is not in the gearbox. You should check other rear drive nodes.

If a gearbox is not noise without load, it will have to do with its restoration. Worn gears begin to make noise only under load.

Causes of VAZ 2107 gearbox breakdown

The design of the gearbox is quite reliable and the "seven" can drive 100-300 thousand kilometers without repairing the rear axle. Premature wear gears appears only with improper operation:

• non-registration replacement of transmission oil;
• the use of low-quality oil;
• operation of the bridge with insufficient oil level;
• frequent chambers of the car or operation in extreme load modes.

Tools required for dismantling gearbox

To repair the rear bridge VAZ 2107, you will need:

• set of precipitated wrench;
• chisel;
• fucking;
• a hammer;
• bearing rings puller;
• pencil;
• capacity for transmission oil;
• dynamometer key;
• a set of probe:
• calipers.

Works must be carried out on the lift or observation pit.

Removing the rear bridge of the VAZ 2107

Before removing the gearbox, it is necessary to drain the transmission oil, which is flooded in the VAZ 2107 rear axle. For this, it is necessary to substitute the oil container for the drain hole of the bridge and unscrew the drain plug.

Important: After repair, a new transmission oil should be pouring into the gearbox.

Subsequent procedure for such:

Repair and adjustment of the Reducer VAZ 2107

Adjustment and repair of the gearbox requires some skills and thorough compliance with technology. It is also necessary to have pullers, stands and special tools. If there is no listed, you should entrust the work of professionals.

If your qualification is insufficient, it is better not to start working with the gearbox. The assembly and adjustment work requires sufficiently high locksmith skills. Disassemble the VAZ 2107 bridge is easy, but it is one of the few "seven" nodes requiring highly skilled service. Save on these works is not worth it.

The reduction of the gearbox is performed in the following sequence:

When disassembling the gearbox, you must apply the labels on the lids of bearings, so that then install them in the same position. To do this, you can use Kerno (which is more reliable) or a pencil. The labels should be applied to the lids and on the body, so that when the assembly is combined to combine them. You should also mark the left and right lid, so as not to confuse them in places.

This can be done like this: on the lids, besides marks opposite the labels on the case, apply the numbers or letters with a pencil. The way is bad to cleaning the cover of the tag erased. Therefore, it is more reliable to make marks core. For example, one on the left lid and two on the right.

Internal rings with a separator are extracted using a hammer and a paint. It is necessary to beat the rings, knocking slightly at different places. If you beat only one place, the ring will not get out.

Usually the repair is to replace the bearings or the main pair. These details most often fail.

The main pair is produced in several variations and determines the gear ratio of the gearbox. The greater the gear ratio is the greater the thrust, the lower - the higher the maximum speed of the machine. There are three standard variants of the main pair used on different models of VAZ.

The owners of the VAZ 2107 sometimes put the main pairs of gearbox with a non-standard gear ratio. To enhance the thrust, pairs are with a big value, to increase the maximum speed - with less. If there is a task of tuning a car, you can, using the case, change these characteristics of VAZ 2107.

Help: The maximum gear ratio (4.44) was at the VAZ 2102 bridge. After removal from the production of this model, finding a couple with this relationship became problematic, but as practice shows, the best option is the installation on the VAZ 2107 with a motor 1.5-1 , 6 gearbox from 2103 (4.1-gear ratio). When choosing this gearbox in a pair with a five-speed gearbox, a traction and speed are saved.

Repair of the rear bridge of the VAZ 2107 is not always appropriate. It is often easier to replace the gearbox to the new one. It is worth considering that the new node will be more durable restored.

Regulation and installation of the Reducer VAZ 2107

Before assembling the gearbox, all the details must be carefully flushed into kerosene. They should be inspected before installation. The gear teeth should not have chips or scaling and have a metal color, and not to be covered with black oilfall. Small jackets of the axis of satellites, cervix and seats Gears semi-axes can be treated with small emery. If there are major loops or a large work output, it is necessary to replace.

Details of the gearbox are going in order, reverse disassembly. Press the rings of bearings with the help of a hammer and a special device (the proti key head is suitable).

The gaps between the gears of the gearbox are adjustable with the help of the adjusting ring, the thickness of which is selected individually. For selection, a caliper and probes of various thicknesses are necessary. Tighten the flange nut is needed with a moment of 18 kgf.

Adjusting the Reducer VAZ 2107