24 00 039 Removing and installing automatic transmission (GA8HP50Z)

Special tools required:

00 2 030
00 9 120
00 9 130
11 8 910
23 4 050
24 2 390
24 4 160
24 4 161
24 4 164
11 6 480
24 1 110

CAUTION: To prevent heavy damage to the engine block, the protruding thread of the transmission bolts absolutely must be checked for damage and corrosion before removal .
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.

CAUTION:

Do not let skin come in contact with transmission oil and do not inhale fuel vapors.
Wear protective gloves.
Ensure adequate ventilation.

CAUTION: After completion of repair work, check TRANSMISSION OIL LEVEL .
Use only the APPROVED TRANSMISSION OIL .
Failure to comply with this requirement will result in serious damage to the automatic transmission!

Necessary preliminary work:

Clamp off battery .
Remove FRONT UNDERBODY PROTECTION .
Remove REAR UNDERBODY PROTECTION .
Refer to REMOVE EXHAUST SYSTEM .
Remove heat shields.
Remove STARTER MOTOR .
Partially remove PROPELLER SHAFT .
- Disconnect propeller shaft at transmission.
- Release center mount.
- Tie up the propeller shaft to the vehicle underbody.
  Attention:
  
  NOTE: Bending the propeller shaft by an excessive angle can cause premature damage to the joint/propeller shaft!
Support engine with lifter when removing transmission.

Removal:

Loosen screws (1).

Remove reinforcement bar (2).

G12705142

Courtesy of BMW OF NORTH AMERICA, INC.

Release the positive battery cable (1) from the terminals and set them aside.

G12705116

Courtesy of BMW OF NORTH AMERICA, INC.

Unscrew nuts (1).

G12731094

Courtesy of BMW OF NORTH AMERICA, INC.

Release screws (1).

Remove holder (2).

G12731095

Courtesy of BMW OF NORTH AMERICA, INC.

Supporting transmission:

Support transmission with special tool 23 4 050, 00 2 030.

Secure transmission to mounting with tensioning strap (1).

Tasks are described in GEARBOX HOLDER .

G11105129

Courtesy of BMW OF NORTH AMERICA, INC.

Release screws (1).

Release transmission cross-member from body.

G12705188

Courtesy of BMW OF NORTH AMERICA, INC.

Slacken nut (1).

Release ground strap (2) from body.

Unscrew nut (3).

Remove holder (4).

G12702495

Courtesy of BMW OF NORTH AMERICA, INC.

Release screw (1).

Disconnect hydraulic lines (2) to transmission oil cooler.

G11105173

Courtesy of BMW OF NORTH AMERICA, INC.

Crank engine with special tool 11 6 480 at the vibration damper in direction of rotation until screw (1) is visible in the recess.

Release all 6 bolts of torque converter with special tool 24 1 110.

G11105174

Courtesy of BMW OF NORTH AMERICA, INC.

Prepare special tool (1) 24 4 161 (A) with the shaped element (2) 24 4 164 as shown.

G12705192

Courtesy of BMW OF NORTH AMERICA, INC.

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).

G12702499

Courtesy of BMW OF NORTH AMERICA, INC.

Unlock and disconnect connector (1) by turning.
Do not touch pins.
Loosen all cable clips.
Insert special tool 24 2 390 in the sealing sleeve.

Operations are described in:

NOTES ON MECHATRONICS

CAUTION: Read and comply with important note.

G11105171

Courtesy of BMW OF NORTH AMERICA, INC.

Insert special tool 24 2 390 in the sealing sleeve.

G11105172

Courtesy of BMW OF NORTH AMERICA, INC.

Release remaining screws.

Fig 1: Torque Converter Screws Loosening Sequence

G11105179

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

Bore hole (1) in drive plate must be accessible from recess for the starter.

Check dowel sleeves (2) and (3) for correct seating.

Replace damaged fitting sleeves.

G11105180

Courtesy of BMW OF NORTH AMERICA, INC.

Rotate torque converter until bore hole in torque converter is flush with bore hole in drive plate.

Insert screws and tighten lightly.

Fig 2: Torque Converter Screws Tightening Sequence

G11105179

Courtesy of BMW OF NORTH AMERICA, INC.

Feed in holder (2) and install.

Tighten down screws (1).

Tightening torque 24 00 1AZ .

G12731095

Courtesy of BMW OF NORTH AMERICA, INC.

Feed the positive battery cable (1) in and clip it in.

G12705116

Courtesy of BMW OF NORTH AMERICA, INC.

Tighten down nuts (1).

Tightening torque 18 20 1AZ .

G12731094

Courtesy of BMW OF NORTH AMERICA, INC.

Tighten the screws.

Tightening torque 24 00 1AZ .

Fig 3: Transmission Housing Screws Tightening Sequence

G12702510

Courtesy of BMW OF NORTH AMERICA, INC.

Unscrew screw (1) and screw (2).

Remove special tool 24 4 160 from the recess on the transmission housing.

G12702499

Courtesy of BMW OF NORTH AMERICA, INC.

Parts : Replace screws.

Crank engine with special tool 11 6 480 at the vibration damper in direction of rotation until screw (1) is visible in the recess.

Tighten all 6 bolts of torque converter with special tool 24 1 110.

Tightening torque 24 40 1AZ .

G11105174

Courtesy of BMW OF NORTH AMERICA, INC.

Remove special tool 24 2 390 from sealing sleeve.

G11080591

Courtesy of BMW OF NORTH AMERICA, INC.

Push on plug connector (1) and lock by turning.

Operations are described in:

NOTES ON MECHATRONICS

CAUTION: Read and comply with important note.

G11080592

Courtesy of BMW OF NORTH AMERICA, INC.

CAUTION: It is mandatory to use the screw with washer M6x20, also see appropriate BMW parts catalogue for reference.

Parts : Replace sealing rings.

Install hydraulic lines (2) on transmission.

Tighten screw (1).

Tightening torque 17 22 1AZ .

G11105173

Courtesy of BMW OF NORTH AMERICA, INC.

Install ground strap (2).

Tighten screw (1).

Tightening torque 24 11 7AZ.

Install holder (4).

Tighten screw (3).

G12702495

Courtesy of BMW OF NORTH AMERICA, INC.

Install the transmission cross member.

Insert screws (1) and tighten.

Tightening torque 22 32 3AZ.

G12705188

Courtesy of BMW OF NORTH AMERICA, INC.

Remove special tool 23 4 050, 00 2 030 and mounting from the transmission.

Remove the tensioning strap (1) from the mounting.

G11105129

Courtesy of BMW OF NORTH AMERICA, INC.

Fit reinforcement bar (2).

Tighten down screws (1).

Tightening torque 12 41 1AZ .

G12705142

Courtesy of BMW OF NORTH AMERICA, INC.

Required follow-up work:

Install PROPELLER SHAFT .
Install STARTER .
Install heat shields.
Install EXHAUST SYSTEM .
Remove FRONT UNDERBODY PROTECTION .
Remove REAR UNDERBODY PROTECTION .
Connect battery .