![](https://www.opelbook.ru/img/astra/4207.jpg)
1 - Hose connector
2 - Retainer
3 - Union connector on the transmission
ATF coolant hose fittings (transmissions AF17 and AF 20)
![](https://www.opelbook.ru/img/astra/4208.jpg)
1 - Hose connector
2 - Retainer
3 - Mating connector
4 - Union connector on the transmission
Removing
1. Support the rear wheels with wheel chocks, set the parking brake, move the selector lever to the position «N», then jack up the front of the vehicle and support it on jack stands. If equipped, remove the crankcase protection.
2. Drain the ATF (see chapter Current service), then screw the drain plug into place and tighten to the required torque.
3. Remove the battery from the mounting tray (see chapter Engine electrical equipment).
4. Remove the exhaust pipe, catalytic converter and the middle section of the exhaust system (see chapter Power and exhaust systems).
5. Remove both drive shafts (see chapter Clutch and drive shafts), - if ATF has not been drained, get ready to collect it.
6. Having hung the power unit from above on the crossbar laid across the engine compartment, remove the front subframe (see chapter Suspension and steering).
7. Release the latch (if provided) and carefully disconnect the selector cable from the AT lever. Release the cable sheath from the support bracket and move the cable aside.
8. Turn out a fixing bolt and remove a direct tube measuring. Remove the sealing ring.
9. Walk along the wiring from the switches and transmission sensors, release the clamps and disconnect the connectors. Release the wiring harnesses from all provided intermediate clips on the transmission case.
10. Turn out fixing bolts and remove a basic arm of fastening of electroconducting.
11. If equipped, disconnect the ventilation hose from the top of the transmission case.
12. Remove the air cleaner with intake ducts (see chapter Power and exhaust systems).
13. Support the transmission with a trolley jack (in order to distribute the load, lay a wooden block between the head of the jack and the transmission housing).
14. Turn out three bolts of fastening of the right support of a suspension bracket of the power unit to an arm at the end of the block of cylinders.
![](https://www.opelbook.ru/img/astra/4209.jpg)
15. Turn out five or six bolts of fastening of the left support of a suspension bracket to crankcase АТ.
![](https://www.opelbook.ru/img/astra/4210.jpg)
16. Having previously marked, disconnect the hoses of the ATF cooling path from the front of the transmission housing (release the latches by prying them with a screwdriver) (see illustration ATF coolant hose fittings (AF13 transmissions) or ATF coolant hose fittings (transmissions AF17 and AF 20)). Put the clamps in their places and remove the sealing rings - the rings must be replaced without fail. Seal open ends of hoses and fittings immediately to prevent dirt from entering the system.
17. Turn out two fixing bolts and remove assembly of a forward support of a suspension bracket of the power unit.
18. By manipulating the hoist and jack, lower the power unit by approximately 50 mm - try not to press the communication lines laid under the transmission.
19. In order to provide access to the torque converter mounting bolts, remove the rubber plugs from the sump flange. Turning the torque converter by the crankshaft pulley bolt, alternately unscrew all the bolts of its fastening to the drive disk.
20. To prevent the torque converter from moving off the shaft and falling during the removal of the transmission, slide it deep into the assembly.
21. Fully transfer the weight of the transmission to the jack, then turn out the upper and lower bolts securing the transmission to the engine - try to remember the location of the bolts and the mounting brackets fixed by them.
On models equipped with AF13 and AF17 transmissions, do not confuse the transmission mounting bolts with the two engine oil pan mounting bolts. Once again, make sure that all communication lines are disconnected and nothing prevents the removal of the transmission.
22. After removing all bolts, move the jack and separate the transmission from the engine, completely removing it from the guide bushings. Lower the jack and remove the transmission from under the car - try not to drop the torque converter. If the bushings are loose in their sockets, remove them from and put them in a safe place.
Installation
You will need new bolts for fastening the torque converter to the drive disk and new O-rings for the fitting connections of the ATF cooling path lines.
Installation is carried out in the reverse order to the dismantling of the components. Pay attention to the following points.
1. Before installation, drive the threaded holes of the torque converter with a tap, completely removing traces of corrosion and old sealant from their turns (instead of a tap, you can use an old bolt of the appropriate size, after making a longitudinal cut in it).
2. Check that the guide bushings are in place and lubricate with molybdenum grease the torque converter guide pin and centering bush on the crankshaft trunnion.
3. Follow the correct installation of the transmission on the engine, tighten all fasteners with the required force.
4. Do not forget to replace the bolts securing the torque converter to the drive disk - at the first stage, the bolts are tightened by hand, then (diagonally in several steps, evenly with the required force).
5. Don't forget to replace the drive shaft seals (see chapter Clutch and drive shafts).
6. Replace the sealing rings of the union connections of the lines of the ATF cooling path, monitor the reliability of the fastening of the tubes;
7. Do not forget to replace the sealing element of the ATF dipstick guide tube.
8. Finally, fill the transmission with the required amount of fresh ATF (see chapter Current service) and adjust the selector cable (see Gear selector adjustment).
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