Removing and Installing Transmission (GS6S53BZ SMG)

23 00 112 - Removing and installing transmission (GS6S53BZ SMG)

Special tools required:
- 00 2 030 00 2 030 Universal Hydro-Lifter Basic Unit
- 21 0 135
- 21 2 240 21 2 240 Grease Scraper Ring
- 23 0 131 23 0 130 Take-Up Support for Transmission
- 23 0 132 23 0 130 Take-Up Support for Transmission
- 23 0 136 23 0 130 Take-Up Support for Transmission

Important!
After completing work:

- Perform adaptation using DIS Tester, refer to Service Functions in DIS Tester (Teach in transmission)
- Check transmission oil level Procedures
Use only the approved transmission oil
- Check fluid level Service and Repair in hydraulic system
- Read out fault memory and clear entered faults
Failure to comply with this requirement will result in serious damage to the manual transmission.

Necessary preliminary tasks:
- Disconnect battery Instructions for Disconnecting and Connecting Battery
- Remove front underbody protection
- Remove reinforcement plate Service and Repair
Important notes on installation are described in this work step
- Remove complete exhaust system Service and Repair
- Remove oxygen sensors

Remove heat shields (1) and (2).

Pull plug (1) off pulse generator.

Release screw (2) and remove pulse generator.

Detach plug (1) from oil level sensor and unclip cable from fixtures.

Detach plug (1) from cable duct.

Press in retaining lugs (1) with screwdriver (2) and remove cable duct (3).

Tie wiring harness to one side.

Release screws (1) to support transmission.

Tightening torque 23 00 1AZ Transmission in General.

Supporting transmission:

Support transmission with special tools 00 2 030 00 2 030 Universal Hydro-Lifter Basic Unit, 23 0 132 23 0 130 Take-Up Support for Transmission, 23 0 131 23 0 130 Take-Up Support for Transmission, 23 0 136 23 0 130 Take-Up Support for Transmission and 21 0 135.

Unfasten screws (1) and nuts (2).

Remove transmission cross-member.

Tightening torque 22 32 3AZ/4AZ 22 32 Transmission Mounts.

- Remove propeller shaft from transmission.
- Release centre bearing.
- Tie propeller shaft to one side.
Tasks are described in Removing propeller shaft Removing and Installing Complete Propeller Shaft (Constant-Velocity Joint).

Disconnect plug connections (1) and (2).

Release cable strap (3).

Disconnect plug connections (1) and (2) and unclip cable from holder.

Detach plugs (4) from clutch travel sensor.

Detach plug (1) from sensor.

Unfasten screws.

Tightening torque 23 00 1AZ Transmission in General.

Important!
Do not allow the transmission to hang off from the transmission input shaft as this will deform the clutch plate.

Installation Note:
Check that dowel sleeves are correctly seated.

Replace damaged dowel sleeves.

Ensure correct position of cover plate.

Installation:
Check lubrication of transmission input shaft for sticky consistency. If grease is sticky, replace clutch plate Service and Repair.

Check clutch plate for friction rust in taper splines and replace if necessary Service and Repair.

Remove any grease and lining abrasion from taper splines of clutch plate by mechanical means (with a cloth).

Installation Note:
Greasing specification:

- Remove and clean release bearing and release lever Service and Repair (do not grease).
- Push on grease scraper ring 21 2 240 21 2 240 Grease Scraper Ring as far as it will go.
- Grease splines (1) of input shaft with a brush. refer to BMW Service Operating Fluids
- Detach grease scraper ring.