Gearbox vaz 21083 DIY repair

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 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.

For many novice drivers who have seen 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 a standard 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 engine assemblies, and then drain 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 smell from each other, which means that with the proper skills and work experience, a damaged oil seal can be identified. 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 release bearing of the VAZ 2108).
• 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.

Remove dirt and wash the outside of the gearbox.

2. Place the transmission straight up.

3. Remove the six nuts securing the rear cover.

4. Remove the mounting bolt and.

5. ... remove the clutch cable bracket.

6. Gently hit the back cover with a rubber mallet.

Remove the gasket carefully, as an undamaged gasket can be re-installed during assembly.

7. Remove the rear cover from the Lada Samara gearbox housing.

8. Remove the gasket.

9. Engage 3rd or 4th gear.

10. Remove the 5th gear fork bolt and engage 5th gear.

To secure the shafts from turning, it is necessary to simultaneously engage the 5th gear and the 3rd or 4th gear. To engage 5th gear, move down the synchronizer clutch together with the fork (the fork fastening bolt must be unscrewed) so that the splines of the clutch mesh with the gear rim of the gear.

11. Make sure the shafts do not turn.

12. Loosen the nut on the output shaft.

13. Unscrew the nut on the output shaft.

The nuts on the shafts are tightened with a high torque, so you need to apply a lot of effort to loosen.

14. Unlock the nut on the input shaft.

15. Unscrew the nut on the input shaft.

Remove the synchronizer carefully. Make sure that the synchroniser sleeve does not come off the hub: the spring-loaded synchroniser locking balls may crumble.

16. Use screwdrivers to hook the 5th gear synchronizer of the VAZ 2109 onto the hub.

17. ... and remove it together with the plug. Remove the plug from the coupling.

18. Remove the 5th gear synchroniser locking ring.

19. Use a screwdriver to hook up the 5th gear driven gear.

20. ... and remove it from the secondary shaft of the samara fret.

21. Remove the needle bearing thrust washer.

22. Remove the 5th gear needle bearing.

23. Use a screwdriver to hook up the 5th gear drive gear.

24. ... and remove it from the input shaft.

25. Use an impact screwdriver to remove the four screws holding the bearing plate.

26... Remove the bearing plate.

27. Pick up with screwdrivers and remove the 5th gear needle bearing sleeve of the VAZ 21099 from the secondary shaft.

28. Remove the thrust washer from the pinion shaft.

29. Remove the input shaft bearing retaining ring. To do this, press the retaining ring against the bearing ring with one screwdriver, and remove the ring from the groove with the other screwdriver.

30. Remove the pinion shaft bearing retaining ring in the same way.

31. Unscrew the retainer cap.

32. Carefully remove the retainer ball with spring. Remove two more clips in the same way.

33. Remove the two mounting bolts and.

34. ... remove the rear support of the power unit VAZ 2109.

35. Unscrew the reverse lock plug. Tilt the box and remove the retainer ball with spring.

36. Remove the 12 nuts and the bolt securing the gearbox housing to the clutch housing.

37. Using a large screwdriver, carefully separate the clutch housing and the lada satellite.

There are three places between the crankcases where you can insert a screwdriver to avoid damaging the gasket. Insert a screwdriver into these slots one by one and gently wiggle until the crankcases separate.

38. Remove the transmission case.

39. Remove the bolt securing the 1st and 2nd shift forks.

40. Lift the rod and remove it together with the shift forks of the 1st and 2nd gears.

41. Remove the 3rd and 4th gear shift fork mounting bolt.

42. Disengage the stem head from the lever.

43. ... and remove it together with the plug.

44. Turn the 5th gear fork rod of the VAZ 2108, removing its head from the lever. Remove the stem.

45. Remove the retaining ring.

46. Remove the reverse gear fork.

47. Remove the reverse gear with the axle.

48. Slightly shaking, remove the input and output shafts at the same time.

When both gearbox shafts are removed, the inner rings of the front bearings remain on the shafts.

49. Take out the driven gear wheel of the final drive together with the differential.

50. Remove the three bolts securing the gearshift mechanism.

51. Remove the gearshift mechanism.

52. Carefully remove the gasket.

Do not damage the gasket when removing. An undamaged gasket can be reused when assembling the gearbox.

53. Press the pinion shaft front bearing out of the clutch housing. To do this, you can use the puller foot or similar tool.

Press out the front input shaft bearings and the oil seal only when replacing them or replacing the clutch housing.

54. Press out the oil seal to replace the input shaft front bearing.

It is impossible to press out the input shaft oil seal without damaging it. Therefore, when replacing the input shaft bearing, you will need a new oil seal.

55. Press the bearing into the crankcase by applying force to the outer ring of the bearing.

56. Remove the magnet from the clutch housing.

57. Unscrew the nut that secures the speedometer drive housing.

58. Hook up the housing with a screwdriver.

59. ... and remove the housing from the driven gear of the speedometer drive.

If, during operation, traces of oil leakage through the hole for the speedometer drive were noticed, replace the rubber O-ring on the drive housing.

60. Remove the driven gear with the speedometer drive shaft from the housing.

61. Push the O-ring out of the speedometer drive housing.

62. Unscrew the reverse light switch from the gearbox housing.

63. Slide the protective cover for the shift link joint from the flange on the transmission.

64. Remove the opposite edge of the protective boot from the hinge flange.

65. Remove the bolt securing the hinge to the stem.

66. ... and remove the joint from the stem.

67... Remove the protective cover from the stem.

68. Remove the bolt securing the lever to the shift rod inside the clutch housing.

69. Remove the lever and rod from the clutch housing.

70. If, during operation, traces of oil leakage were noticed through the hole in the clutch housing under the gear shift rod, replace the rod oil seal.

VAZ 2109 and 21099 cars are equipped with four-speed and five-speed manual transmissions. All gears, except for the rear, are equipped with synchronizers. Also, the box is combined with differentials.

It is extremely important to monitor the serviceability of the checkpoint, and if signs of damage are found, immediately eliminate them. With your own hands or with the help of a car service - this is your personal decision.

The inner structure of the box

To understand the essence of the repair, disassembly and assembly of the gearbox, the first step is to get acquainted with its device. In the case of the VAZ 2109, the box device is as follows:

• A block of driving gears is located on the input shaft, which are in constant mesh with the driven gears of the gears when moving forward;
• The second shaft has driven gears with needle bearings. There is also a pair of synchronizers;
• The output shaft is created in conjunction with the main gear drive gear;
• The driven gear of the main gear is attached to the flange of the two-satellite differential box;
• Differential bearings are always mounted with an interference fit, which is adjusted by selecting rings of different thicknesses.

Repair of the gearbox largely depends on the nature and type of malfunction. There are several options for the breakdown of this unit, in each of which appropriate actions should be taken to eliminate them.

Malfunction

Possible reasons

What do we have to do

Gear shifting with difficulty

• The clutch is not fully squeezed out;
• The thrust, which controls the gearshift mechanism, is deformed;
• The integrity of the jet thrust has been compromised;
• The fastening of the hinge or rod, which selects the gear, is loose;
• The speed change drive is incorrectly adjusted;
• The plastic components of the gear shift actuator are broken

• Try to straighten the traction. If this is not possible, replace them;
• Tighten the fastening screws more tightly;
• Adjust the gearshift drive;
• Replace damaged components

There is a spontaneous shutdown of gears

• The ends of the synchronizer teeth on the gear and coupling are damaged or worn out;
• Cracks have appeared, the rubber on the rear supports has peeled off;
• Incorrectly adjusted the gearshift drive;
• The thrust guard has been tightened incorrectly, due to which the gear is not fully engaged

• Replace worn out, deformed elements;
• Correct the position of the casing (cover) of the traction;
• Adjust the drive

Transmissions turn on with noise, crackling

• The clutch is not completely disengaged;
• The blocking ring of the gear synchronizer is worn out.

There is an oil leak from the gearbox

• Worn input shaft seal; Worn stem
• speed selection;
• Breakage of the speedometer drive roller seal;
• The fastening of the cover on the gearbox or crankcase is loose;
• The sealant under the gearbox cover is damaged;
• The fastening of the closure of the drain hole is loose

• Replace gaskets, use new sealant and gaskets;
• Tighten all available fasteners;
• Check the condition of the drain plug