24 00 039 Removing and installing automatic transmission (GA8HP50Z) (230i coupe/convertible, RWD)

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:

Refer to CLAMPING OFF BATTERY .
Remove underbody protection at front and rear. Refer to 51 47 490 REMOVING AND INSTALLING/REPLACING UNDERBODY PROTECTION (FRONT) , and REMOVING AND INSTALLING/REPLACING REAR UNDERBODY PROTECTION .
Refer to REMOVING EXHAUST SYSTEM .
Remove heat shields.
Refer to REMOVING STARTER MOTOR .
Refer to PARTIALLY REMOVING PROPELLER SHAFT .
- Disconnect propeller shaft at transmission.
- Release center mount.
- Tie up the propeller shaft to the vehicle underbody.
Attention :

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).

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Release positive battery cable (1) from the clamps (2) and lay to one side.

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Slacken nut (1).

Release screw (2).

Loosen screws (3).

Remove holder (4).

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Pull off cotter pins (1).

Remove acoustic cover (2).

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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 .

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Release screws (1).

Release transmission cross-member from body.

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Slacken nut (1).

Release ground strap (2) from body.

Unscrew nut (3).

Remove holder (4).

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Release screw (1).

Disconnect hydraulic lines (2) to transmission oil cooler.

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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 .

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

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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).

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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.

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Insert special tool 24 2 390 in the sealing sleeve.

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Release remaining screws.

Fig 1: Automatic Transmission Screws Loosening Sequence

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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.

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

Insert screws and tighten.

Fig 2: Automatic Transmission Screws Tightening Sequence

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Install acoustic cover (2).

Install cotter pins (1).

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Feed in holder (4) and install.

Tighten down screws (3).

Tightening torque 18 31 3AZ .

Tighten screw (2).

Tighten nut (1).

Tightening torque 18 31 4AZ .

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Feed positive battery cable (1) into clamps (2) and install.

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Tighten the screws.

Tightening torque 24 00 1AZ .

Fig 3: Automatic Transmission Screws Tightening Sequence

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Unscrew screw (1) and screw (2).

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

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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 .

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Remove special tool 24 2 390 from sealing sleeve.

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

Operations are described in:

NOTES ON MECHATRONICS .

CAUTION: Read and comply with important note.

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CAUTION: It is mandatory to use the screw with washer M6x20, also see applicable BMW parts catalogue!

Parts: Replace sealing rings.

Install hydraulic lines (2) on transmission.

Tighten screw (1).

Tightening torque 17 22 1AZ .

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Install ground strap (2).

Tighten screw (1).

Tightening torque 24 11 7AZ .

Install holder (4).

Tighten screw (3).

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Install the transmission cross member.

Insert screws (1) and tighten.

Tightening torque 22 32 3AZ .

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

Remove the tensioning strap (1) from the mounting.

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Fit reinforcement bar (2).

Tighten down screws (1).

Tightening torque 12 41 1AZ .

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Required follow-up work:

Refer to INSTALLING PROPELLER SHAFT .
Refer to INSTALLING STARTER .
Install heat shields.
Refer to EXHAUST SYSTEM .
Install front and rear underbody protection. Refer to 51 47 490 REMOVING AND INSTALLING/REPLACING UNDERBODY PROTECTION (FRONT) , and REMOVING AND INSTALLING/REPLACING REAR UNDERBODY PROTECTION .
Refer to CONNECTING BATTERY .