24 00 030 Removing and installing automatic transmission (GA6HP19Z) N54/N55
Special tools required:
If there are signs of corrosion, the rust must be removed and the threads must be cleaned before removal .
Replace rusted, damaged screws.
Failure to comply with this instruction will result in serious damage to the engine block and transmission.
Use only the approved transmission oil.
See AUTOMATIC TRANSMISSION -- OPERATING FLUIDS .
Failure to comply with this requirement will result in serious damage to the automatic transmission!
As of production date 09/2012, only steel bolts are installed for the securing of the transmission.
Note:
Aluminum screws/bolts must be replaced each time they are released .
Aluminum screws/bolts are permitted with and without color coding (blue).
For reliable identification:
Aluminum screws/bolts are not magnetic .
Jointing torque and angle of rotation must be observed without fail (risk of damage) .
The aluminum bolts can be optionally replaced by steel bolts.
Necessary preliminary tasks
- Remove underbody protection with bracket at front and rear.
- Remove FAN COWL with fan
- Release the hose connector from the charge air cooler on the left and right.
- Remove complete exhaust system . See 18 00 020 REMOVING AND INSTALLING COMPLETE EXHAUST SYSTEM (N54) or 18 00 020 REMOVING AND INSTALLING COMPLETE EXHAUST SYSTEM (N55) .
- Remove heat shields
- Support engine with jack when removing gearbox
Release screws (1).
Remove heat shield (2).
Disconnect connector (3).
Bracket remove.
Remove cables (1) from holder (3).
Release screw (2) and remove holder (3).
Release and disconnect plug connectors (1) from brackets.
Unfasten screws (2).
Remove cover plate (3).
Tightening torque: 24 1 4AZ .
Release aluminum bolt (1) on right next to cable retaining plate.
Aluminum screws must be replaced.
Tightening torque: 24 1 2AZ .
Grip clamping bush (1).
Slacken nut (2).
Detach clamp (3) downwards using a screwdriver.
Pull cable (4) out of holder.
Installation note:
Adjust Gearshift Lever. See 24 00 018 ADJUSTING SHIFT LEVER or 24 00 018 ADJUSTING SHIFT LEVER (AWD) .
Supporting transmission
Support transmission with special tools 23 4 050 , 00 2 030 .
Secure transmission to mounting with tensioning strap (1).
Tasks are described in Gearbox holder. See 23... UNIVERSAL BMW TRANSMISSION TAKE-UP .
After completion of work, check transmission fluid level.
Unfasten screws (1) and nuts (2).
Remove transmission cross-member.
Tightening torque: 24 71 1AZ/2AZ .
- REMOVE propeller shaft from transmission.
- Release center mount.
- Note:
- Bending the propeller shaft by an excessive angle can cause premature damage to the joint/propeller shaft!
- Tie up propeller shaft to underbody.
- Support engine with lifter when removing transmission.
Release screw (1).
Disconnect hydraulic lines (2) to transmission oil cooler.
Installation note:
Replace sealing rings.
Release nut (1) and bracket from transmission oil lines on oil sump.
Crank engine at vibration damper in direction of rotation until screw (1) is visible in recess.
Release all bolts of torque converter with special tool: 24 1 110 .
Crank engine further and release remaining 5 bolts.
Tightening torque: 24 14 1AZ .
Prepare special tool (1) 24 4 161 (A) with shaped element (2) 24 4 165 , side (B) to (A).
Insert special tool 24 4 160 into recess of transmission housing and clamp gently with screw (1).
Raise by turning screw (2) and clamp down.
Then tighten down screw (1).
- Unlock and disconnect connector (1) by turning.
- Do not touch pins.
- Release cable from brackets.
- Insert special tool 24 2 390 in sealing cup.
Repair work is described in
Release screws.
Installation note:
Observe screw fastening sequence without fail.
Tightening torque, steel screws 24 1 1AZ .
Aluminum screws must be replaced.
Tightening torque and angle of rotation, aluminum screws/bolts 24 1 2AZ (7, 8, 9, 10, 11).
Installation note:
Tighten down screws/bolts to specified torque.
Attach special tool 00 9 120 for angle of rotation with magnet 00 9 130
Secure to vehicle underbody and screw down aluminum screws/bolts in accordance with angle of rotation.
Angle of rotation 24 1 2AZ .
Installation note:
Bore hole (1) of driving plate must be accessible from recess on engine oil sump.
Check that fitting sleeves are correctly fitted.
Replace damaged fitting sleeves.
Installation note:
Rotate torque converter until bore hole in torque converter is flush with bore hole in drive plate.
Flange automatic transmission to engine.