Replacing the rear bridge of the VAZ 2107
VAZ 2107, the last representative of the classics on which the rear-wheel drive was installed. He had the same structure as the predecessors: reducer, cardan transmission, rear axle, etc. On newer models, VAZ 2108, 2109, 2110, instead of a gearbox, were installed, the so-called shruses, which, for a long time of their operation, showed themselves less endless.
In general, the gearbox is considered one of the strongest mechanisms in the car. But, as they say, there is nothing eternal, and sooner or later, this mechanism will need to be repaired or replaced. So, let's consider the procedure for replacing the Reducer VAZ 2107, with your own hands.
Device
Reducer is one of the main mechanisms included in the design of the rear axle. It is responsible for transmitting torque from the gearbox to drive wheels. Its device includes:
- Two main gears: leading and led;
- Axis with satellites located on it;
- Gear semi-axes;
- Lock plate;
- Differential box;
- Adjusting screw;
- Carter;
- Gearbox.
It is worth noting that all the details of this mechanism are mainly located in constant motion, and underwent heating. It is for this reason that they require special techniques and operating conditions, otherwise the replacement of this node will need it very promptly.
Basic breakdowns
Almost every VAZ owner on which rear drive was installed: VAZ 2107, 2106, 2105, etc., heard such a phrase - "buzzing the rear axle." Usually, under this phrase, there was any malfunction, and in this case, as a rule, a repair or replacement was required. So, let's wonder what is buzzing, and what could be the reason.
If you heard outside noise in the area of \u200b\u200bthe rear axle, then the first thing is to determine at what speed it appears. For this, reaching 20 km / h, continue acceleration smoothly, without jerks, until the speedometer arrows does not reach 90 km / h. Remember what engine speed, the bridge is buzzing. After overclocking, release the gas pedal, but do not turn off the transmission so that the engine braking occurred. Listen again when the buzz starts.
Mechanism device
The second thing to be done is to make sure that the gearbox is broken, and not other rear axle mechanisms - check the course of the car when the ignition is turned off. To do this, turn away about 100 km / h, turn on the neutral transmission, and turn off the ignition. Listen carefully to noise in the area of \u200b\u200bthe rear axle. If the bridge is buzzing as before, the problem is in the gearbox. Well, if, the noise is disappeared, then the reason in another rear axle mechanism.
The third thing you need to do is put a car on the handbrake, turn on the neutral, and rejected. If, when increasing the revolutions, something buzzes again, then there is no need for a rear axle, but any node located in the engine or gearbox. Well, if noise is no longer observed, then you can be sure - the reducer is required to replace.
Replacement
Before carrying out the removal of the gearbox from the rear axle, it should be merged with all the exhaust oil. After the procedure is completed, in no case fill the old oil into the gearbox. For him should be replaced. Be sure to put a car for neutral transmission, as the rear axle must be in a free state.
First of all, you need to disconnect the cardan shaft from the bridge. Now, you need to remove the rear wheels and brakes. To do this, lift the car to the jack, and unscrew the 4 fastening nuts on each wheel. Also, screw the brake mounts, and dismantle them. You will find free access to the VAZ 2107 rear axles of the rear axle. They are also needed to remove the gearbox. And now that it is in free access, it can be replaced.
By the way, while the rear axle of the car VAZ 2107 is in a disassembled state, you can check all bearings and glands on rotating elements. In the presence of cracks, chips or other defects, it will be necessary to replace.
Also, pay special attention to the state of the main pair of bearings. This part is responsible for the gear ratio. There are several types of main couples, differing in diameter, cross section and size. Depending on which the pair will stand, this will be the gear ratio. If their state is unsatisfactory, then they will necessarily need a replacement.
For lovers of tuning and speed, there is an option to install superior transmission to the gearbox. Since it has a low gear ratio, due to this, the nominal speed of the car is significantly increased. The largest number allowed on the VAZ 2107 - 4.4.
Assembly
When the replacement of parts in Lada 2107 is produced, the gearbox must be put in place, and make sure that the bridge is no longer buzzing. Assembling the VAZ 2107 bridge, produced in the same sequence as the disassembly, only on the contrary.
The new unit put in your place, and screw it. After, fix the semi-axis on the bridge, and we set the flange of the shank into the cardan shaft. Next, we screw the wheels, and check how successfully the replacement has passed.
For this, you need to check whether the bridge is not buzzing in high and low revs. Spend three treatments: Predazing on a neutron, turn away and turn off the transmission and the engine, make smooth overclocking. If the reducer 2107 is still buzzing, then you did something wrong, or most likely the reason is not in the gearbox. Well, if the bridge is no longer buzzing, then everything is done correctly, and you can safely continue the operation of the car.
