373519 Removing and Installing Transmission
WM 373519 Removing and installing transmission
Tools
Technical values
Preliminary work
Preliminary work for removing and installing transmission
1. Move Tiptronic selector lever to position - N -.
2. Disconnect the battery. -> 2X00IN Work instructions after disconnecting the battery 2X00IN Work instructions after disconnecting the battery
3. Support the engine at the body. -> 1001IN Supporting engine on the body 1001IN Supporting the engine on the body
4. Loosen the rear cardan shaft at the transfer gear and make sure that it does not become kinked, e.g. tie it up. -> 393519 Removing and installing rear cardan shaft - section on "Removing" 393519 Removing and installing rear cardan shaft
Removing transmission
Information
- When removing the engine, ensure that the torque converter in the automatic transmission does not slip out of the transmission.
- Keep the torque converter pressed in position using a screwdriver when removing the engine.
Information
Some of the repair illustrations show only one side of the vehicle. Naturally, some steps also have to be performed on the opposite side of the vehicle as well. These must be carried out as a mirror image of the steps shown.
Information
- The pictures shown in this document may differ from the original.
- However, this does not affect the validity and relevance of the pictures.
1. Move selector lever to position - N -.
2. Unclip the wire harness -1- for the oxygen sensors on the left cylinder head cover out of the holder -2-.
Line for left oxygen sensor
3. Remove the front cardan shaft. -> 390219 Removing and installing front cardan shaft - section on "Removing" 390219 Removing and Installing Front Cardan Shaft
4. Remove primary catalytic converter on the left.
Spray the fastening screws on the primary catalytic converter with penetrating oil and leave to take effect.
Loosen the fastening screws -1- (only on the left-hand side) on the catalytic converter.
Primary catalytic converters
5. Loosen the fastening screws -1- for the holders -2- of the left and right primary catalytic converters -3- on the transmission.
Holder for primary catalytic converter
6. Loosen the fastening screws -1- on the left and right for the rear holders -2- of the catalytic converters on the transmission.
Holder for catalytic converters
7. Remove the catalytic converters and set them aside.
8. Release electric plug connections -1, 2- at the right of the transfer gear -a, b- and pull them off -A, B-.
Plug connections for transfer gear at the right
9. Release electric plug connections -1, 2- at the bottom of the transfer gear -a, b- and pull them off -A, B-.
Plug connections for transfer gear at the bottom
10. Mark gearshift position - N - -1- on the automatic transmission -2- with a suitable pen -A-.
Marking gearshift position
11. Remove shift cable -3- on the automatic transmission -4-. -> 371519 Removing and installing selector lever cable - section on "Removing" Service and Repair
Removing shift cable
11.1. Unclip the cable -3- at the front on the ball joint -1- using disassembly tool Nr.21.
11.2. Unscrew fastening screws -2- at the rear shift cable -3-.
12. Loosen fastening nuts -8- on the exhaust clamp (clamping sleeve) -3- between the catalytic converter and exhaust system. Slide exhaust clamps onto the exhaust system. The exhaust clamps must not be re-used. -> 260119 Removing and installing exhaust system - section on "Removing" Service and Repair
Loosening clamps
13. Loosen fastening screws -1- for the heat shield -2- at the automatic transmission -3-.
Heat shield for automatic transmission
14. Remove heat shield.
15. Detach holder -1- for ATF lines at the front of the transmission.
Holder for ATF lines at front of transmission.
16. Unclip ATF lines -A-.
17. Place a suitable container underneath to catch emerging ATF.
Loosen the fastening screw -1- on the ATF lines -2- at the bottom of the transmission -3-.
Detaching ATF lines at bottom
18. Remove ATF lines.
Close off the ATF lines and transmission bores using suitable stoppers.
19. Lower the automatic transmission -1- at the rear.
Lowering transmission
19.1. Lift the automatic transmission -1- using a suitable jack -2-.
19.2. Loosen the fastening screws -3- on the automatic transmission at the rear transverse strut of the automatic transmission.
19.3. Use the jack to lower the automatic transmission until the fastening screws for the ATF lines at the ATF heat exchanger can be loosened.
20. Place a suitable container underneath to catch emerging ATF.
Loosen the fastening screws -1- for the ATF lines -2- on the ATF heat exchanger -3- and pull them out.
Close off the ATF lines and bores in the heat exchanger using suitable stoppers.
ATF lines at top
21. Loosen fastening screws -1- for the ATF heat exchanger -2- at the transmission.
Loosening ATF heat exchanger
22. Release electric plug connection -1- from the thermal management control valve -2- ( -a- ) and pull it off -A-.
Plug connection for control valve
23. Unscrew fastening screws -1- for the coolant line holder -2- , bend holder to one side.
Holder for coolant lines
24. Release the electric plug connection -1- of the crankshaft pulse sender at the bottom of the transmission -a- and pull it off -A-.
Plug connection for crankshaft pulse sender
Loosen the tie-wrap at the coolant line holder on the left if necessary.
25. Unclip the hose -1- for the transmission vent from the holder -2-.
Transmission vent hose
26. Pull off vacuum hose -1- for the vacuum supply at the T-piece -2-.
Unclip the vacuum line -3- from the holder -4-.
Vacuum supply
27. Remove plug -1- used to seal the converter assembly opening.
Removing plug used to seal assembly opening
28. Remove converter screws. Follow the steps below to do this. -> 325019 Removing and installing torque converter - section on "Removing" Service and Repair
Disconnecting converter screws
29. Turn crankshaft clockwise using special tool socket-wrench insert 97140.
30. Insert the special tool locating pins 95950 into the front bore on the converter bell housing -arrow- and hold it upwards with light pressure until it engages when the crankshaft is turned.
31. Position special tool bit insert 96880 on converter screw through opening in the engine block, connect bit snap-on head and special tool insert 96870 one after the other.
Opening for converter screws
32. Remove special tool locating pins 95950 before loosening the converter screws.
33. Unscrew converter screw and twist out.
34. Complete the steps described above for the other five screws.
35. Position the transmission -1- on the jack -2- and secure it with a tension strap -3- to prevent it from tipping downwards.
Securing transmission
36. Loosen the fastening screws -1- for the transmission at the engine.
Loosening transmission from engine
37. Tilt the engine as far down as possible at the rear by twisting at the engine bridge.
38. Remove transmission.
Get a second mechanic to help.
Removing transmission
38.1. Remove the transmission -1- from the engine by tipping.
38.2. Carefully pull the transmission to the rear -A- and lower slowly using the jack -B-.
38.3. Make sure that no wire is kinked or torn off when removing it.
38.4. Make space to remove it by tipping or twisting the transmission if necessary.
Installing transmission
CAUTION
Damage to converter screws due to excessive tightening torque.
-> Observe adjusting value for torque wrench. 65 Nm (48 ftlb.) on torque wrench = 85 Nm (63 ftlb.) on the screw.
Information
- Because of the limited space between the engine and the radiator, the fixing pin can only be inserted at one point.
- Insert special tool in front of the fixing point in the belt pulley and then turn towards the fixing point. To remove, turn engine back slightly and remove fixing pin.
Information
- A second fitter is required to unscrew or screw in the converter screws.
- The converter screws must be replaced.
Information
- The adaptation values must be reset using the Porsche System Tester when the transmission is renewed/replaced. => Removing and installing Tiptronic control unit
1. Fix engine to the crankshaft with special tool fixing pins 9595.
Disconnecting the crankshaft
2. Insert special tool centring pin 9689 in converter.
Torque converter centring pin
3. Gradually run in transmission.
Guide in centring pin 9689 when doing this
A second mechanic is required
Running in transmission
3.1. Lift the transmission -1- using the jack -2- ( -A- ) and push forwards -B- until it can be positioned on the engine.
The dowel sleeves on the engine must slip perfectly into the bores on the transmission bell housing.
4. Fit the transmission screws -1- with the holders -2- for the primary catalytic converters => Initial tightening: 38 Nm (28 ftlb.). Then tighten to => Final tightening: 90° (67 ftlb.).-> 373519 Removing and installing transmission - section on "Installing"
Fitting transmission screws
5. Remove special tool centring pin 9689 and fit converter screws. For tightening torques refer to -> 373527 Removing and mounting transmission - section on "Mounting" 373527 Removing and mounting transmission, -> 325019 Removing and installing torque converter - section on "Installing" Service and Repair
6. Screw in new converter screws:
7. Place screw on special tool bit insert 9688 and screw in screw.
Opening for converter screw on engine
8. Position bit snap-on head and special tool insert 9687 and screw in screw, but do not tighten.
9. Turn crankshaft clockwise with special tool socket wrench insert 9714.
10. Insert special tool locating pins 9595 into the front bore on the converter bell housing -arrow- and hold it in place with light pressure until it engages when the crankshaft is turned. This sets the position for the next screw.
Disconnecting converter screws
11. Complete the steps described above for the other five screws.
12. Remove special tool fixing pins 9595 before tightening the converter screws to the specified torque. => Tightening torque: 85 Nm (63 ftlb.)
13. Insert plug for converter assembly opening. To do this, moisten the groove on the plug with water.
Plug used to seal converter opening
14. Starting at the cut-out in the engine block -1- , press in the plug all the way round from position -2-3-.
Plug
15. Check the position of the plug -2- using an inspection mirror -1-. When doing this, make sure that the sealing lip -3- makes contact all the way round.
Installation position of plug
16. Push the vacuum hose -1- onto the T-piece -2-.
Vacuum supply
Clip vacuum line -3- into the holder -4-.
17. Clip the hose -1- for the transmission vent into the holder -2-.
Transmission vent hose
18. Connect the electric plug connection of the crankshaft pulse sender at the bottom of the transmission and lock it.
Secure the wire harness with a tie-wrap if necessary.
Plug connection for crankshaft pulse sender
19. Place the holder -2- for the coolant lines in position on the transmission and fit the fastening screw -1-.
Holder for coolant lines
20. Connect the electric plug connection -1- to the control valve -2- ( -A- ) and lock it -a-.
Electric plug connection for control valve
21. Position ATF heat exchanger -2- on the transmission and fit the fastening screws -1- to => Tightening torque: 20 Nm (15 ftlb.).
Loosening ATF heat exchanger
22. Position ATF lines -2- on the ATF heat exchanger -3-.
Ensure that the lines are seated correctly.
ATF lines at top
23. Fit fastening screws -1- to => Tightening torque: 8 Nm (6 ftlb.).
24. Position ATF lines -2- with holder in the transmission -3-.
Ensure that the lines are seated correctly.
Detaching ATF lines at bottom
25. Secure holder -1- for ATF lines to the front of the transmission.
Screw in fastening screw to => Tightening torque: 20 Nm (15 ftlb.).
Holder for ATF lines at front of transmission.
26. Fit fastening screws -1- of the heat shield -2- to the automatic transmission -3- to => Tightening torque: 15 Nm (11 ftlb.).
Heat shield for automatic transmission
27. Lift automatic transmission -1- at the rear and fit it.
Lowering transmission
27.1. Lift automatic transmission -1- using a suitable jack -2- and position the bores in the transverse strut at the threaded bores in the body.
27.2. Tighten the fastening screws -3- of the automatic transmission to the rear transverse strut of the automatic transmission to => Initial tightening: 50 Nm (37 ftlb.) and then fit to => Final tightening: 90°.
27.3. Lower the jack and remove it from the vehicle.
28. Push new exhaust clamps (clamping sleeves) -3- onto the exhaust pipes. The threaded joint must be pointing downwards.
Tighten fastening screws. -> 260119 Removing and installing exhaust system - section on "Installing" Service and Repair
Fitting clamps
29. Fit shift cable -3- on automatic transmission -4-. -> 371519 Removing and installing selector lever cable - section on "Installing" Service and Repair
Shift cable on automatic transmission
29.1. Clip in shift cable -3- at the ball joint -1-.
29.2. Fit the fastening screws -2-.
30. Plug in electric plug connections -1, 2- at the bottom of the transfer gear -A, B- and lock them -a, b-
Plug connections for transfer gear at the bottom
31. Plug in electric plug connections -1, 2- at the right of the transfer gear -A, B- and lock them -a, b-.
Plug connections for transfer gear at the right
32. Fit the front cardan shaft. -> 390219 Removing and installing front cardan shaft - section on "Installing" 390219 Removing and Installing Front Cardan Shaft
33. Place the catalytic converters in position on the engine and transmission assembly.
33.1. Position the fastening nuts -1- of the left primary catalytic converter and fit them.
Primary catalytic converters
33.2. Position the primary catalytic converters -1- at the gear supports -2- and fit the fastening screw -1-.
Holder for primary catalytic converter
33.3. Fit the fastening screws -1- of the rear catalytic converters to the holders -2- at the transmission.
Holder for catalytic converters
34. Clip the wire harness -1- for the oxygen sensor on the left at the cylinder head cover into the holder -2-.
Wire harness for left oxygen sensor
Subsequent work
Subsequent work for removing and installing transmission
1. Fit the rear cardan shaft. -> 393519 Removing and installing rear cardan shaft - section on "Installing" 393519 Removing and installing rear cardan shaft
2. Remove engine support. -> 1001IN Supporting engine on the body 1001IN Supporting the engine on the body
3. Connect the battery. -> 2X00IN Work instructions after disconnecting the battery 2X00IN Work instructions after disconnecting the battery
4. Check ATF level and top up if necessary. -> 370235 Checking and topping up ATF 370235 Checking and Topping Up ATF