DIY repair of the VAZ 21083 gearbox

As a rule, oil changes on a VAZ 21083 are carried out regularly and without fail. Changing the oil in a VAZ 21083 is a necessary and very important procedure, without which it is impossible to imagine the normal functioning of a car. Oil is a lubricant, without which not a single part, not a single unit of a car, not a single small gear can do. This article will provide instructions on how to change it in the VAZ 21083 gearbox and engine.

Let's start with general data. As you know, both the gearbox and the engine have a special dipstick. This is the tool that helps you determine the lubrication level. Every driver should check the dipstick daily and try to keep the level close to the top mark on the scale. If the oil level is below the mark, it is not recommended to top up with a new one. This cannot be done. You need to start replacing immediately.

The lower mark is the minimum permissible oil level and if it drops below, then the parts and components of the car will not be lubricated enough, and as a result, this will lead to breakdown or failure of the engine or gearbox. Therefore, it is so important to monitor the level of lubrication, to monitor this matter in a timely manner, etc. The oil should be changed every 75,000 km., as the instruction says, but this is not entirely true. In the conditions of driving on our Russian roads, strong compaction of traffic, poor fuel quality and for other reasons, the oil change in the VAZ 21083 box and the engine should be carried out more often. This is especially true when changing the engine oil. If, in city driving, today you do not alternate between driving with frequent stops and abrupt starts, you can easily get into an accident. Even experienced drivers, who know that such driving has a bad effect on the components and mechanisms of the car, are forced to do so. As a result, the oil loses its quality rather quickly and requires replacement.

Video (click to play).

For many novice drivers who saw how they change the lubricant in the engine and even did it themselves, changing the oil in the VAZ 21083 gearbox seems to be something unusual and mysterious. Many of the newcomers do not even know where and how to fill it in the checkpoint. So:

• Let's first consider when to replace the gear lubricant in the box and which oil is better. According to experts, today motor oil is used more often for VAZ. But life tests have shown that the mileage of the car until the next replacement is significantly reduced. But a good gear oil is something that was specially invented for boxes.
• To increase the resource of the gearbox - its parts, assemblies and mechanisms, such as synchronizers, it is recommended to replace the engine oil with transmission oil, always of good quality. This will not only increase the resource, but also significantly reduce the noise of the box. In this case, the transmissions will also turn on softer and clearer.
• To date, two grades of transmission grease have shown excellent test results. These are Rolls T 80W-85 API GL4 and Lukoil TM4 80W90 API GL4. Castrol oils are also good, but they have not been fully tested yet.

As for GL5 oils, they do not need to be used. At least that's what the experts say. On the front-wheel drive VAZ models, there are no hypoid pairs in the gearbox, as, for example, in the same Moskvich. Therefore, it is not necessary to use such oil, although if it is available, then it can be safely poured. In addition, to facilitate the cranking of the gearbox, especially in winter, oils of lower viscosity, but the same level of performance, can be used. For example, it can be ESSO GEAR OIL SAE 75W-90 of excellent German quality.

As you know, 3.3 liters of oil are poured into the five-stage box of the VAZ 21083, and exactly 3 liters into the four-stage box. After returning from a trip to the garage, the old oil is immediately drained into a specially designed container (an old five-liter canister with a cut-off top is ideal). Begin:

• remove the rubber cap on the gearbox and rinse it;
• take a thin long wire and clean the breather hole;

• the cap is then put in place;
• we substitute the container under the checkpoint;
• we unscrew the oil drain plug at the VAZ 21083 gearbox;

• after the oil has completely drained, screw the oil drain plug into place.

Note. The oil drain plug is unscrewed and tightened with an ordinary spanner 17. You can also use a head with an extension for this.

• remove the oil level dipstick;
• we take a special funnel and put it in place of the probe;

• pour oil.

Note. On some gearbox models, oil can be filled in in another way, which implies the presence of a special tool. This is a large syringe with which oil is pressed into the inside of the box. In this case, the level, which is the gauge of the fill, is that parameter until oil flows out of the fill hole. This will mean that the oil level is sufficient.

• we wipe the probe-pointer with a clean rag and put it in place;
• remove the dipstick again and look at the marks (if the oil is below the level, then you can add a little more from the top).

Note. It is recommended to fill in oil so that the level on the dipstick does not slightly reach the upper mark. If less oil is poured, then it can go to lubricate parts and assemblies when starting the engine, as a result of which it will not be enough. If you fill in oil above the level, the oil seals will not withstand.

• we wipe the gearbox;
• see if there is a leak.

In order for the oil change on the VAZ 21083 to be successful, the motorist must know some important points:

• You need to pay attention to the oil that has been drained from the box. If it contains dust particles of metal, then not everything is in order with the box and repairs are needed, which will be cheaper if done in a timely manner.
• If, in the drained oil, it is not dust that is found, but metal shavings, then this is even worse. In this case, the motorist should be ready for a more expensive repair of the VAZ 21083 gearbox.
• You should also pay attention to the gearbox housing. If there are traces of leaks on it, then you need to check if they remain after the oil change in the VAZ 21083 gearbox was carried out. If a leak appears after replacement, then there may be cracks in the box or the crankshaft oil seal may leak oil. In this case, again it will be necessary to disassemble the box and repair or replace the oil seal.
• You should periodically check the oil level in the box and the presence of leaks.

A car engine is not a gearbox and it is quite simple to replace the VAZ 21083 oil itself. Only now the replacement is carried out every 10,000 km. Before starting the replacement process, it is recommended that you familiarize yourself with this video, and then proceed to the steps.

• we raise the car to an overpass or observation pit.

Note. It is recommended to start draining the oil not immediately after returning from a trip, but 20-30 minutes after that. So it will be possible to achieve complete drainage of the oil from the crankcase. If this operation is carried out immediately after stopping the engine, the old oil may remain between the gears and the motor units, and then leak into the crankcase and mix with the new filled one. This leads to undesirable results.

• remove the crankcase cover (this can be done either with a 17 key or with a special tool if the cover is four- or hexagonal);
• before this, an empty container is placed under the crankcase.

Note. The oil may be too hot, so be very careful.

• wait until all the oil is drained (about 10-15 minutes);
• wrap the cork back and tighten;
• now you will need to unscrew the oil filter with a special puller (photo below);

• remove the old oil filter and replace it with a new one, before lubricating it with oil.

Note. If you cannot easily remove the oil filter, you can use a conventional screwdriver with the handle removed, acting like a lever.

• tighten the new oil filter by hand 3-4 turns;
• pour new oil into the crankcase;
• wait three minutes;
• remove the dipstick and wipe it with a clean cloth;
• re-enter the probe;
• we take it out and look at the level, which should be between the “minimum” and “maximum” marks;
• we start the engine;
• we stop the engine immediately after the indicator lamp for insufficient oil level goes out;
• again check the oil level with a dipstick (if anything, bring it to normal).

Do-it-yourself oil change on a car is not only a pleasure from the process, but also a way to save money on services... If you do everything as required by the instructions, changing the oil of the box or engine of the VAZ 21083 will not cause any difficulties. You can do this at any free time without spending your wallet. And, as you know, the price of this type of service today is quite high.

Replacing the gearbox oil seals of the VAZ 2108 gearbox can be carried out without completely dismantling the gearbox. We only need to drain the oil and disconnect all attachments, namely the front wheel drives (grenades). We prepare a standard set of tools to carry out repairs. It is more reasonable to carry out work on an inspection pit or overpass.

The repair procedure is as follows:

• We are replacing the oil seal of the internal hinge. To do this, use a flat screwdriver to pry it by the edge and remove it. We clean the seat with clean gasoline or kerosene and install a new one, pressing it using a mandrel of a suitable diameter.
• Now you can start replacing the gear shift shaft oil seal. To do this, you will have to remove the gearbox, or rather, disconnect it from the clutch housing. Next, we remove the gearshift mechanism and pushing the box slightly away from the crankcase, pull out the gearshift rod. Well, then, according to the knurled pattern, we pull out the old oil seal, rinse it onto a clean seat and press a new one using a mandrel. When installing a new gland, its working edge should be directed towards the inside of the box.

By the way, it is possible to identify which of the oil seals leaked by smell, that is, the engine and transmission oils have a different odor from each other, which means that if you have the proper skills and work experience, you can identify a damaged oil seal. So, if the crankshaft oil seal is damaged, there will be a smell of engine oil, and if the clutch oil seal is damaged, there will be a smell of transmission oil.

If the clutch discs become oiled, then this is most likely due to a malfunction of the input shaft oil seal. To replace it, we perform the following steps:

• First of all, we need to remove the clutch release bearing (see Removing and replacing the VAZ 2108 release bearing).
• Now we need to remove the guide sleeve, which is fastened with three bolts. Spring washers will be located under the bolts - carefully do not lose them.
• We remove the oil seal. To do this, we use a thin metal hook, with which we pry it over the edge of the oil seal in different places and pull it out a little bit.
• Similarly, we rinse the seat and press a new one with a suitable diameter mandrel, while the gland with its working edge should be directed towards the inside of the box.

That's it, the repair work on replacing the gearbox oil seals of the VAZ 2108 is completed.

We clean it from dirt and rinse the gearbox from the outside.

In the same way, remove the circlip from the secondary shaft bearing.

You can replace the hinge of the gear selector shaft on the gearbox installed on the vehicle.For clarity, we carry out this operation on the removed stock.

In the same way, we replace the outer ring of the input shaft bearing.

In the same way, we knock out the oil seal and the outer ring of the differential bearing from the gearbox housing. We take out the adjusting ring.
We clamp the input shaft in a vice with soft metal pads.

To disassemble the output shaft, we support the main gear drive gear on a wooden stand.
We insert a chisel or a powerful screwdriver into the gap between the end of the drive gear and the inner ring of the front bearing.

We clamp the secondary shaft in a vice with soft metal pads.

We clamp the driven gear of the final drive in a vice with soft jaws.

To remove the differential bearings, we clamp the box in a vice.

Automatic transmission 2109

The choice of the vehicle speed is performed by a mechanism called a gearbox. On a VAZ 2109 car, five or four gearbox steps are installed.
Timely diagnostics of the unit operation, repair and replacement of worn parts with new ones ensures the reliability of the car. In this case, the cost of repairs will be significantly lower than when attracting car service specialists.

The VAZ 2109 checkpoint requires repair in the following cases:

• If the elements of the assembly are heated.
• There is increased noise during engine operation.
• Can't Shift Gears
• On the move, the transmission may "get out".

Before starting repair work, the gearbox is removed from the vehicle. To do this, the machine is placed on an inspection pit or a lift, and the hood is secured against accidental closure.
So:

• The storage battery, TDC sensor, starter traction relay are disconnected.
• The ground wire is disconnected from the crankcase.
• The TDC sensor and the clutch housing are decoupled from each other.
• The speedometer turns off.
• The clutch release fork is disconnected.
• A bracket is mounted to raise the engine to the stud that secures the exhaust manifold.
• The motor is suspended on the lifting mechanism.
• The engine splash shield and the cover located at the bottom of the clutch housing are removed.
• The oil is drained from the gearbox.
• The reversing light is switched off.
• Its thrust is disconnected from the selector shaft.
• The engine and gearbox are decoupled.
• They are released from fixing the axle shaft of the steering knuckle hub.
• The ball joints located on the suspension arms are disconnected from the fists.
• The shafts for the wheel drives are retracted to the sides.

Tip: If the wheel drive and half-axle gear are difficult to separate, it is necessary to simultaneously remove the gearbox with the wheel drive, and then press out the hinge on the bench plate.

• The gearbox is removed from the studs and the suspension bracket located in the lugs of the side member of the machine body is removed.
• The starter is removed.
• The clutch disc is disconnected from the gearbox shaft, which fixes the crankcase to the engine.
• The gearbox is removed from the car.

Advice: When repairing the gearbox, you need to pay attention so that its input shaft does not rest on the petals located on the pressure spring. This could damage them.

Repair of a VAZ 2109 five-stage box begins with cleaning it from dirt and a good wash from the outside.
So:

• The box is placed vertically upward. The nuts securing the rear cover of the assembly are unscrewed.
• The clutch cable bracket is removed.
• Using a rubber hammer, the rear cover is carefully detached from the gearbox housing.
• The gasket is removed.

Tip: If the gasket is carefully removed and not damaged, it can be re-installed during assembly.

• Third or fourth gears are included.
• The bolt securing the fifth gear fork is unscrewed, which is then turned on. In this case, the synchronizer clutch moves down with the fork in such a way that the clutch splines mesh with the gear.
• Make sure the shafts do not turn.
• The nuts on the input and output shafts of the gearbox are unscrewed.
• With a screwdriver, the fifth gear synchronizer is pushed on and removed together with the fork.
• The fork is removed from the coupling.

Tip: Remove the synchronizer carefully. Do not allow the synchronizer clutch to come off the hub.
Otherwise, the spring-loaded balls that fix the synchronizer may crumble.

• The ring blocking the fifth gear is removed from the synchronizer.
• Prying the driven gear of the fifth gear with a screwdriver, it is removed from the secondary shaft.
• The thrust washer is pulled out of the needle bearing.
• The 5th gear needle bearing is removable.
• The drive gear of the same transmission is removed from the input shaft.
• The bearing plate is released and removed.
• The fifth gear needle bearing sleeve and thrust washer are removed from the output shaft.
• The bearings of the input and output shafts are freed from the retaining rings.
• The retainer plug is unscrewed.
• The balls of the retainer with a spring are carefully removed.
• The rear engine support is removed, which is previously freed from the mounting bolts.
• The stopper of the reverse lock is unscrewed. Then the gearbox is tilted and the retainer ball is removed from it together with the spring.
• The nuts and bolt fixing the gearbox housing to the clutch housing are unscrewed.
• Using a large screwdriver, the gearbox and clutch housing are disengaged.

Tip: In order not to damage the gasket for the seal, the screwdriver is inserted into special grooves and gently swayed until the nodes are separated.

• The gearbox housing is removed.
• The fork is released from the fastening to shift the first two gears, the stem is lifted and removed together with the fork from the unit.
• The bolt fixing the fork is unscrewed to shift the third and fourth gears.
• The connecting rod head is disengaged from the mating part and the rod is removed simultaneously with the fork.
• The head of the fifth gear stem is removed from the lever, which is then turned and pulled out.
• The retaining ring is removed.
• The fork is removed to engage reverse.

Removing the fork to engage reverse

• The reverse gear is removed together with the axle.
• At the same time, the shafts are removed - primary and secondary. To do this, they need to be wiggled slightly from side to side.

Pulling out the input and output shafts

• Together with the differential, the driven gear of the final drive is removed.
• It is released from the fastening and the gearshift mechanism is removed.
• The gasket is removed.
• The front bearing is pressed out of the clutch housing on the output shaft inside the crankcase, as shown in the photo. To replace it, you must remove the oil seal.

Pressing out the front bearing on the secondary shaft of the clutch housing

Advice: Replacing the bearing of the input shaft must be performed with the replacement of the oil seal.

• A magnet is pulled out of the clutch housing.
• The nut holding the speedometer drive housing is unscrewed, which is then removed from the driven gear of the assembly.
• If necessary, the rubber ring for sealing is replaced on the device body.
• The speedometer drive housing is freed from the driven gear with the shaft and the O-ring.
• The switch for the reverse light is turned out of the gearbox housing.
• From the flange, located on the gearbox, the cover is displaced, which protects the hinge of the drive rod for gear shifting, and the opposite edge of the protective cover is removed from the flange of the hinge.
• The bolt fixing the hinge on the gear shift rod is unscrewed and the hinge is removed from the rod.
• The protective cover is removed.
• The lever and the rod are released from the fastening and pulled out of the clutch housing.
• If there are traces of oil leakage on the clutch housing, it is necessary to replace the oil seal on the gear shift rod.