23 00 026 Removing and installing transmission (GS6-55BG)

WARNING: This page is about a different variant/trim than selected.

Special tools required:

00 2 030
23 4 150

Necessary preliminary tasks:

Disconnect BATTERY .
Drain TRANSMISSION OIL .
Secure engine in INSTALLATION POSITION .
Remove TRANSMISSION SUPPORT BRACKET .
Remove FRONT AXLE SUPPORT .
No wheel alignment is required for removal and installation of front axle support.
Remove LEFT OUTPUT SHAFT .
Remove RIGHT OUTPUT SHAFT .

Release clips on limit position/holder (1).

Detach selector lever cable (2) from ball joint.

Release screw (3) and remove bracket.

Fig 1: Identifying Holder And Selector Lever Cable

Courtesy of BMW OF NORTH AMERICA, INC.

Disconnect plug (1) for reversing light switch.

Fig 2: Identifying Plug

Courtesy of BMW OF NORTH AMERICA, INC.

If necessary, disconnect plug connection (1) on zero gear sensor.

Detach cable (2) with holder from transmission.

Fig 3: Identifying Plug Connection And Cable

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: Pressure line of clutch slave cylinder remains connected.

IMPORTANT: Slowly relieve tension on clutch slave cylinder otherwise air may be drawn in through sealing sleeve.
If possible, do not deflect push rod of clutch slave cylinder.
A deflection of the push rod caused by removal will cause easy escape of fluid. This escape of fluid does not mean that the clutch slave cylinder is damaged.
Replacement is therefore not necessary!

Release nuts (1) and remove clutch slave cylinder.

Tightening torque 21 52 2AZ

Fig 4: Identifying Clutch Slave Cylinder Nuts

Courtesy of BMW OF NORTH AMERICA, INC.

Release bolt (1) WAF 13 from above.

Release bolts (2) and remove starter.

Tightening torque 12 41 1AZ

Fig 5: Identifying Starter Bolt

Courtesy of BMW OF NORTH AMERICA, INC.

Supporting transmission:

Support gearbox with special tools 23 4 150 and 00 2 030

Support transmission from underneath.

Secure transmission with tensioning strap (3).

Tasks are described in TRANSMISSION BRACKET .

After completion of work, check transmission OIL LEVEL .

Fig 6: Supporting Gearbox With Special Tools 23 4 150 And 00 2 030

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: There is no bolt fitted at the lowermost point (1) of the transmission.

Release screws.

Tightening torque: 43 ± 4 Nm

IMPORTANT: Do not allow transmission to hang on transmission input shaft when removing and installing, as the clutch disc will be deformed.
Pull transmission downwards and remove.

Fig 7: Locating Transmission Bolts

Courtesy of BMW OF NORTH AMERICA, INC.

Installation note:

Check dowel sleeves (1) and (2) for correct seating.

Replace damaged fitting sleeves.

Fig 8: Identifying Adapter Sleeves

Courtesy of BMW OF NORTH AMERICA, INC.

Installation note:

Remove grease from transmission input shaft and clean shaft.

Do not grease transmission input shaft.

Check clutch disc for friction rust in gearing and REPLACE if necessary.

Fig 9: Checking Lubrication At Input Shaft

Courtesy of BMW OF NORTH AMERICA, INC.

Installation note:

If reusing the clutch:
Mechanically remove existing grease and lining abrasion from gearings of clutch disc (with a cloth).

Clean clutch hub and regrease.

In new clutch discs the gearing is already greased.

Refer to OPERATING FLUIDS
Remove and clean RELEASE BEARING AND RELEASE LEVER
Add TRANSMISSION OIL .