BMW X3 Service & Repair Manual: Removing and installing automatic transmission (GA8HP45Z) (N47)

BMW X3 Service & Repair Manual / Transmission / Transmission in general / Removing and installing automatic transmission (GA8HP45Z) (N47)

Special tools required:

  • 24 4 161
  • 24 4 166
  • 24 4 160
  • 24 2 390
  • 23 4 050
  • 00 2 030
  • 11 6 480
  • 24 1 110

IMPORTANT: 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.

IMPORTANT: 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 tasks:

  • Disconnect the BATTERY
  • Remove underbody protection
  • Remove REINFORCEMENT PLATE.

    Important installation notes are described in this job item

  • Remove EXHAUST SYSTEM
  • Remove heat shields
  • REMOVE STARTER MOTOR
  • Remove PROPELLER SHAFT FROM FRONT AXLE DIFFERENTIAL
  • Detach PROPELLER SHAFT at gearbox, release center bearing
  • 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 jack when removing gearbox

Release screw (1).

Disconnect hydraulic lines (2) to transmission oil cooler.

Installation note: Replace sealing rings.

Transmission

Detach cable holder (1) from gearbox.

Unfasten screws (2).

Unscrew nuts (3).

Remove holder (4).

Transmission

Prepare special tool (1) 24 4 161 (A) with shaped element (2) 24 4 166 as pictured.

Transmission

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).

Transmission

  • Unlock and disconnect connector (1) by turning.
  • Do not touch pins.
  • Release cable from brackets.
  • Insert special tool 24 2 390 in sealing cup.

Tasks are described in Gearbox holder.

NOTES ON MECHATRONICS

IMPORTANT: Read and comply with important note.

Transmission

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 TRANSMISSION BRACKET.

After completion of work, check transmission fluid level.

Transmission

Release screws.

Remove cross member.

Transmission

Unplug connector (1) from transfer box control unit (longitudinal torque module).

Release screw (2).

Remove earth strap (3).

Transmission

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 4 bolts of torque converter with special tool 24 1 110 .

Installation note: Replace converter screws. Remove any remaining adhesive residue from the thread.

Transmission

Release bolts and remove transmission.

NOTE: Graphic similar

Transmission

Installation note:

Bore hole (1) of driving plate must be accessible from recess on engine oil sump. Check that fitting sleeves (2...3) are correctly seated.

Replace damaged fitting sleeves.

Transmission

Installation note:

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

Flange automatic transmission to engine.

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