The main malfunctions, for the elimination of which it is necessary to remove the gearbox from the car:
- elevated (compared to usual) noise;
- difficult gear shifting;
- spontaneous disengagement or fuzzy engagement of gears;
- leakage of working fluid through seals and gaskets.
In addition, the gearbox is removed to replace the rear engine crankshaft oil seal.
USEFUL TIPS: The work of removing and installing the gearbox is very laborious, so be sure to first make sure that its malfunctions are not caused by other reasons (insufficient fluid level, defects in the control drive, loosening of the box, etc.).
The gearbox is quite heavy and has an awkward shape to hold, so we recommend removing it with an assistant.
1. Remove the battery (see «Removing and installing the battery»).
2. Remove the battery mounting shelf (see «Removal and installation of the shelf of fastening of the rechargeable battery»).
3. Remove mudguards and crankcase protection (see «Removal and installation of mudguards and engine crankcase protection»).
4. Remove the front wheel drives (see «Removal and installation of front wheel drives»).
5. Remove the starter (see «Removal and installation of a starter»).
6. Pry off the edge of the hole plug to access the torque converter mounting bolts in the cylinder block flange...
7.... and remove the plug.
8. Through the hole opened after removing the plug, turn out, turning the crankshaft, three bolts securing the torque converter to the drive disk.
WARNING: Be sure to apply anaerobic threadlocker to the threads of the torque converter mounting bolts when reassembling.
9. Loosen the collar of the gearbox control cable tip, squeezing its bent antennae...
10.... and remove the tip of the cable from the slot of the bracket on the gearbox.
11. Disconnect the tip from the ball pin of the multifunction switch lever, overcoming the resistance of its retainer, and move the cable to the side.
12. Pry off the harness holder...
13.... and remove it from the hole on the side cover of the gearbox.
14. Similarly disconnect from a transmission the second holder of a plait of wires.
15. Turn out two bolts of fastening of an arm of a cable of management by a transmission...
16.... and remove the bracket.
17. Turn out three top bolts of fastening of a transmission to the engine.
NOTE: The right upper bolt also attaches the harness holder at the same time. Having returned the bolt, take the tourniquet to the side.
18. Unscrew the nut securing the pipeline for draining the working fluid from the heat exchanger...
19.... and disconnect the pipeline from the gearbox.
20. Similarly disconnect from a transmission the pressure head pipeline.
NOTE: Pipe ends are sealed with rubber rings. Replace these rings every time you disassemble the connections.
21. Pull down the lock of the locking bracket of the block of the wiring harness of the gearbox control unit...
22....remove the lock from the locking bracket...
23.... press the bracket lock...
24....throw it away...
25.... disconnect the block and take the wiring harness to the side.
26. Unclench the pressure pipe holder of the working fluid cooling system...
27.... and remove the pipeline from the holder.
28. Similarly disconnect from a transmission the drain pipeline. Move the pipes aside.
29. Attach the slings of the hoist to the rear transport eyes of the power unit and tension the slings.
30. Remove the left powertrain mount (see «Replacement of the left support of a suspension bracket of the power unit»).
31. Remove the front suspension cross member (see «Removal and installation of a cross-beam of a forward suspension bracket»).
32. Install reliable supports under the crankcases of the engine and gearbox.
33. Turn out the top...
34.... and the lower right bolts of the gearbox to the engine...
35.... and remove the bolts together with the thermal shield of the oil seal of the housing of the inner hinge of the right front wheel drive installed under them.
36. Turn out the left lower bolt of fastening of a transmission to an oil crankcase of the engine.
37. Turn away the left top nut of fastening of a transmission to the block of cylinders of the engine.
38. Turn out the left bolt of fastening of a transmission to the block of cylinders of the engine.
39. Inserting a large screwdriver into a special groove at the bottom of the torque converter housing, disconnect the gearbox from the engine...
40.... move the gearbox back...
WARNING: When starting to disconnect the transmission from the engine, ensure that the torque converter disengages from the drive plate as the transmission moves. The torque converter is not fixed in any way in the axial direction on the drive shaft of the planetary gearbox, and if it remains on the drive disk when the gearbox is removed, part of the working fluid that has spilled out of the torque converter cavity will be lost.
41.... and, lowering the support under the gearbox, remove the box.
WARNING: After removing the automatic transmission, to prevent loss of working fluid, immediately secure the torque converter against falling out, for example, by tying it with wire.
42. Establish a transmission and all removed details and knots in an order, the return to removal.
43. Fill the gearbox with working fluid to the required level (see «Checking the level, topping up and replacing the working fluid in an automatic transmission»).