DIY repair of the Lacetti gearbox

Chevrolet Lacetti. DISASSEMBLY AND ASSEMBLY OF THE TRANSMISSION, DEFECTS OF ITS PARTS - PART 1

You will need: keys "10", "13", "19", "24", a set of hex keys, flat-blade screwdrivers (2 pcs.), Round-nose pliers, circlip remover, bearing puller, hammer, beard, chisel.

1. Remove the gearbox from the car (see "Removing and installing the gearbox", page 158). Remove any dirt from it and wash the outside.

2. Using a screwdriver, pry the spring clip on the gear shift drive pivot pin.

Chevrolet Lacetti. DISASSEMBLY AND ASSEMBLY OF THE TRANSMISSION, DEFECTS OF ITS PARTS - PART 3

40. Remove the five bolts securing the intermediate casing to the gearbox housing.

41.. separate the intermediate crankcase from the crankcase by hammer blows through a wooden spacer supported on a special crankcase lug.

42.. and remove the intermediate casing together with the shafts.

43. Remove the crankcase gasket by separating it with a sharp knife.

Replace the intermediate casing gasket with a new one each time the connection is disassembled, as a used crimp gasket may not seal the seal when reassembled.

44. Remove the ten bolts securing the lower transmission cover.

45.. and remove the cover together with the gasket.

46. ​​Separate the gasket from the cover. NOTE

Replace the gasket of the lower cover of the transmission with a new one each time the connection is disassembled, as a used crimped gasket may not ensure the tightness of the seal during reassembly.

47. Mark the position of the differential bearing adjusting nut in relation to the transmission case.

48. Remove the adjusting nut retainer bolt.

50. . push the adjusting nut out of place with a mounting paddle as shown in the photo.

51.. and, counting the number of revolutions, remove the nut.

52. Remove the O-ring from the nut.

Replace a heavily crimped, hardened or torn ring.

53. Press out the axle shaft oil seal from the nut.

54. If it is necessary to replace the differential bearings, turn the adjusting nut over, place a pair of wooden blocks and press out the outer ring of the differential bearing from the nut.

55. Remove the five bolts securing the right differential bearing cover.

56. remove the cover, remove the O-ring from it, press out the oil seal and, if necessary, the outer ring of the bearing from the cover in the same way as they were pressed out of the adjusting nut.

57. Remove the differential assembly from the transmission case.

The manual transmission of the Chevrolet Lacetti rarely causes complaints, and with timely maintenance and oil change, almost all gears are engaged clearly and quietly. Its design can hardly be called innovative, but it is quite simple to adjust and maintain. How to adjust the rocker on the Chevrolet Lacetti, what is needed for this and when adjustment is necessary, we figure it out together.

The main problem with budget cars is the frequent use of inexpensive materials.

And this leads incorrect work the entire unit or unit. A lot of plastic bushings, clamps and adapters are installed in the Lacetti gearbox drive. They wear out over time, gear changes become indistinct and noisy, some speeds may not turn on at all.

The first sign that the gearbox rocker needs to be adjusted is increased backlash and shifting gears with effort.

Also, adjustment will be necessary in cases where the input shaft of the drive and traction, say, after dismantling the box. Adjustment may not solve all problems, but the box will have more intelligible control.

More will radically affect the behavior of the checkpoint replacement of the wings or replacement of plastic bushings, latches and latches with polyurethane, but they do not appear on the market of spare parts. Therefore, we will adjust the stage with our own hands, fortunately, it will take at most 20-30 minutes.

The meaning of the adjustment is to set the gearbox control shaft and the rocker to their original position relative to each other.

To carry out the work you will need:

• drill with a diameter of 5 mm;
• key for 12;
• Screwdriver Set.

Now you can start adjusting.

1. Set the gear lever to neutral.
2. We open the hood and find the place of fixing the gearbox drive shaft and traction drive.

The place of fixation is marked with an arrow.

Clamp and loosening it with a 12 key.

The latch is marked with an arrow.

We check the quality of the adjustment by starting the engine and turning on the gears one by one.

The adjustment is repeated if necessary. Thus, you can quickly and independently adjust the gearshift rocker on the Lacetti.

Every owner of a Chevrolet Lacetti car may be faced with the need to dismantle the gearbox of his car and change the oil in it. A practical solution would be to learn how to do these manipulations on your own in order to insure yourself in case of unforeseen situations.

When operating a car, the Chevrolet Lacetti gearbox can cause a number of problems. These can be problems of the following type:

• Noises appear when changing gears in a car;
• Unexplained objective reasons for the increase in fuel consumption when driving around the city;
• Clutch cylinders are leaking;
• Long stroke;
• Incorrectly selected gear ratios.

According to statistics, every second owner of a Chevrolet Lacetti car is faced with such a problem as long-stroke. To put it another way, the longer the amount of time the car continues to move in one gear, without switching, the more long-stroke the box is considered. The converse is also true. The driver experiences certain inconveniences in connection with this circumstance, since he constantly has to keep the engine speed under control.

Another feature that can cause inconvenience to the driver is the fuzzy engagement of the gear.

There are also a few more points: the box may crackle at the moment of gear shifting at low subzero temperatures; reverse gear may not turn on immediately, but after some time; handle travel becomes awkward in second and third gear.

In order not to face such unpleasant moments in the operation of the car, you need to constantly monitor its technical condition.

First of all, you need to keep the oil level in the Chevrolet Lacetti gearbox under control. Operation under the condition of a low oil level will lead to very rapid wear of car parts and its failure.

At the inspection pit, the box is diagnosed for leaks. Typically, leaks occur in the following places:

• Differential cover;
• The joints of the drive hinges with the box;
• The joints of the cylinder block and the crankcase;
• Gearshift rod.

If you observe any of the above in your Chevrolet Lacetti, it means that the box needs repair, for which you need to dismantle it. Below you will find instructions on how to dismantle the box, as well as how to reinstall it after repair.

This procedure may be necessary in order to repair the box or replace parts of the drive. Dismantling the box is a rather laborious procedure that requires skills and special equipment.Ideally, it is better for these manipulations to be performed by car service employees. The weight of the box is about 30 kg, so you need the help of another person or you need to use a special lifting device.

1. Remove the battery and shelf;
2. Remove the gear shift drive assembly;
3. Remove the drive shaft;
4. We disconnect the electrical connectors at the reversing light switch;
5. We disconnect the electrical connectors at the speedometer sensor;
6. We take out the hairpin;
7. Remove the clutch release cylinder tube;
8. Remove the connecting nut;
9. Remove the damping block bolt;
10. Unscrew the rear suspension bracket bolts;
11. Remove the bracket from the rear suspension;
12. Unscrew the mounting bolts of the rear damping block;
13. We remove the back block;
14. Unscrew the casing bolts;
15. Remove the upper bracket mounting bolts;
16. Remove the bracket;
17. Unscrew the box mounting bolts;
18. We select the box with a jack;
19. Unscrew the lower mounting bolts;
20. We remove the box;
21. We move the box towards the engine;
22. We put the box down.

1. Provide jack support for the box;
2. Insert the input shaft into the clutch disc;
3. Move the box sideways towards the car engine;
4. Tighten the lower mounting bolts;
5. Tighten the upper mounting bolts;
6. Install the casing and screw in the bolt;
7. Install the upper suspension bracket and tighten the bolts;
8. Tighten the bolts of the rear damper block;
9. Install the rear block;
10. Install the rear bracket and tighten the bolts;
11. Install the damper block coupling nut and bolt;
12. Connect the clutch release cylinder tube;
13. Connect the electrical connector of the speedometer sensor;
14. Connect the reversing light switch connector;
15. Remove the device used to hang the engine;
16. Install the drive shaft;
17. Install the gear shift drive;
18. Install the battery and the shelf under it;
19. Check the transmission oil level.

A number of problems associated with the box can be solved and without resorting to dismantling, it happens that it is enough to change the oil in the box and clean it.

Before proceeding with the manipulations, it is necessary to warm up the engine. It is better to change the oil after having driven the car for a while. Ten kilometers will be enough for the engine temperatures to reach operating values. Alternatively, you can warm up the engine in neutral at idle speed. A warm engine will drain the oil faster and more completely than from a cold engine.

Then it is necessary to install the Chevrolet Lacetti on the inspection pit, overpass, lift, since all working manipulations will be done under the machine.

1. Find the cap located next to the pallet;
2. Remove the cap;
3. Unscrew the breather plug using a 17 and 15 wrench;
4. Place a container under the pallet for draining the old oil, with a volume of at least 2 liters;
5. Unscrew the pallet nuts using a 13 wrench;
6. Remove the sump cover after all the old oil has been drained;
7. Remove the gasket;
8. Unscrew the level control bolt, as it has a magnetic tip, small metal particles are likely to adhere to it;
9. Reinstall a new gasket;
10. Screw on the cover.

Advice from experienced car enthusiasts: for greater reliability, it is better to use a sealant when installing the gasket. If you do not know the exact amount of oil to be poured into the box, then you should not tighten the control plug. Pour in the oil very slowly, when you see that it has poured from below through the control plug, then the process can be stopped.

It is most convenient to pour oil into the Chevrolet Lacetti box using the tube that comes with each oil canister. But a much more convenient option would be to use a large plastic syringe to change the oil in the box.Thanks to the use of a syringe, the oil will accurately hit everything as intended, and not spill around. It also saves a lot of time. You need to pour in oil slowly in order to hear its sound, focusing on this, you can understand in time that it is already worth stopping.

Now it remains only to tighten all previously unscrewed bolts. Be sure to check that nothing is leaking anywhere.

That's it, the gearbox oil change is complete.

The recommended oil change frequency depends on factors such as the driver's driving style and vehicle operating conditions.

In some cases, it is recommended to change the oil more often:

• If the movement takes place in conditions of heavy traffic and frequent traffic jams;
• If the fuel used is not of the highest quality;
• Frequent engine start-stop operation;
• If the car is used in conditions of high pollution;
• If in winter trips are often made over short distances, and the engine is not given the opportunity to warm up properly before driving.

The regularity of oil changes is also influenced by the quality of the oil itself poured into the box.

The most suitable oil option for the Chevrolet Lacetti is synthetics purchased from a specialized auto store. Thanks to the choice of high-quality oil, the engine looks like new even on a car with high mileage. You also need to take into account the recommendations from the manufacturer, which are indicated in the documents accompanying the car.