Removing and Installing Transmission (GS6-53DZ) N54
23 00 018 - Removing and installing transmission (GS6-53DZ) N54
Special tools required:
- 00 2 030 00 2 030 Universal Hydro-Lifter Basic Unit
- 00 9 010 00 9 010 Torx E18 Socket
- 00 9 120 00 9 120 Torque Angle Measuring Dial
- 00 9 130 00 9 130 Magnet with 1/2 " Connection
- 21 2 240 21 2 240 Grease Scraper Ring
- 23 4 050 23 4 050 Universal Transmission Bracket
Important!
After completion of work, check gear oil level Procedures.
Use only the approved gear oil.
Failure to comply with this requirement will result in serious damage to the manual transmission.
Important!
Aluminium screws/bolts must be replaced each time they are released.
Aluminium screws/bolts are permitted with and without color coding (blue).
For reliable identification:
Aluminium screws/bolts are not magnetic.
Jointing torque and angle of rotation must be observed without fail (risk of damage).
Necessary preliminary tasks:
- Disconnect battery Instructions for Disconnecting and Connecting Battery
- Remove reinforcement plate Service and Repair
- Remove exhaust system Service and Repair
- Support engine with lifter
Remove heat shields (1) and (2).
Release screws (1).
Disconnect connector (2).
Steel screws, tightening torque 23 00 1AZ Transmission in General.
Aluminium screws, tightening torque 23 00 2AZ Transmission in General.
Release aluminium screws with special tool 00 9 010 00 9 010 Torx E18 Socket.
Unclip cable (1) from holder.
Release screw (2) and remove holder (3).
Note:
Illustration similar
Release screws (1).
Remove holder (2).
Disconnect plug connection (1) from reversing light switch.
Release cable from retainers.
Supporting transmission:
Support transmission with special tools 23 4 050 23 4 050 Universal Transmission Bracket, 00 2 030 00 2 030 Universal Hydro-Lifter Basic Unit.
Secure transmission to mounting with tensioning strap (1).
Tasks are described in Transmission bracket Universal BMW Transmission Take-Up.
After completion of work, check transmission oil level.
Remove transmission cross-member Replacing Cross-Member for Transmission Mounting.
Release screws.
Remove transmission support block.
Tightening torque 22 32 2AZ 22 32 Transmission Mounts.
- Remove propeller shaft from transmission.
- Release center bearing.
- Tie propeller shaft to one side.
Tasks are described in Removing propeller shaft Removing and Installing Complete Propeller Shaft (Constant-Velocity Joint).
Note:
Pressure line of clutch slave cylinder remains connected.
Important!
Slowly relieve tension on clutch slave cylinder otherwise air is drawn in through sealing sleeve.
Release nuts and remove clutch slave cylinder.
Tightening torque 21 52 5AZ [1][2]Clutch Hydraulic System.
Lever out retainer (1).
Disengage shift rod (2).
Installation Note:
Grease shift rod.
Grease, refer to BMW Service Operating Fluids.
Make sure shims (3) are in correct position.
Release and remove bearing pins (1) in direction of arrow.
Lift out shift arm (1).
Installation Note:
Grease bearing pins (1).
Grease,
Refer to BMW Service Operating Fluids.
Release screws.
Installation Note:
Tightening torque, steel screws 23 00 1AZ Transmission in General.
Tightening torque, aluminium screws 23 00 2AZ Transmission in General. Screws: 3/4/5/9/10 (screw 3 only present on N54).
Important!
Do not allow the transmission to hang off from the transmission input shaft as this will deform the clutch plate. Pull out transmission towards rear and remove.
Installation Note:
Secure angle of rotation special tool 00 9 120 00 9 120 Torque Angle Measuring Dial with magnet 00 9 130 00 9 130 Magnet with 1/2 " Connection to floor plate. Screw down aluminium screws according to angle of rotation. Angle of rotation 23 00 2AZ Transmission in General.
Installation Note:
Check that dowel sleeves are correctly seated.
Replace damaged dowel sleeves.
Ensure correct position of cover plate.
Installation Note:
Check lubrication of transmission input shaft for sticky consistency. If grease is sticky, clean input shaft and replace clutch plate Service and Repair.
Check clutch plate for friction rust in splines and replace Service and Repair if necessary.
Mechanically remove existing grease and lining abrasion from splines of clutch plate (with a cloth).
Installation Note:
Greasing specification:
- Remove and clean release bearing and release lever Service and Repair.
- 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.
- Lightly grease guide sleeve for release bearing.