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Home >> Mini >> 2010 >> Cooper S, 2D Hatchback, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 2878 (Manual Transmission - Repair - E91) >> 2300 Complete Transmission >> 23 00 017 Removing and installing transmission (GS6-17BG) N51/N52/N52k/N53 >> Supporting transmission

Supporting transmission

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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 oil level.

Fig 1: Supporting Transmission Using Special Tools (23 4 050, 00 2 030)
G04725990Courtesy of BMW OF NORTH AMERICA, INC.

Remove screws and nuts.

Remove cross-member (1).

Tightening torque 23 71 1AZ/2AZ .

Fig 2: Identifying Transmission Cross-Member With Mounting Screws And Nuts
G04725981Courtesy of BMW OF NORTH AMERICA, INC.

Tasks are described in removing PROPELLER SHAFT

NOTE: Pressure line of clutch slave cylinder remains connected.
IMPORTANT: Relieve tension on clutch slave cylinder slowly; otherwise air will be drawn in through sealing sleeve.
Fig 3: Locating Clutch Slave Cylinder Nuts
G04725970Courtesy of BMW OF NORTH AMERICA, INC.

Release nuts (2) and remove clutch slave cylinder (1).

TIGHTENING TORQUE, 21 52 5AZ .

Detach locking clip.

Fig 4: Removing Locking Clip
G04726003Courtesy of BMW OF NORTH AMERICA, INC.
IMPORTANT: New retaining clips fitted as from 04.08.
Retaining clip must interlock captively with retaining web (1) behind  shift rod pin.
Fig 5: Identifying Retaining Web
G05778020Courtesy of BMW OF NORTH AMERICA, INC.

Pull shift rod (1) out of shift rod joint (2).

Grease shift rod pin (3).

Grease, refer to CLUTCH - OPERATING FLUIDS .

Fig 6: Pulling Shift Rod From Shift Rod Joint
G04726004Courtesy of BMW OF NORTH AMERICA, INC.

Unlock bearing pin (1) in direction of arrow and remove.

Fig 7: Removing Bearing Pin
G04726005Courtesy of BMW OF NORTH AMERICA, INC.

Lift out shift arm (1).

Grease bearing pin.

Grease, refer to CLUTCH - OPERATING FLUIDS .

Fig 8: Lifting Out Shift Arm
G04726006Courtesy of BMW OF NORTH AMERICA, INC.

Release screws.

Installation: 

Tightening torque, steel screws 23 00 1AZ .

Aluminium screws must  be replaced.

Tightening torque and angle of rotation Aluminium screws/bolts, see 23 00 2AZ .

IMPORTANT: Do not suspend the transmission from the transmission input shaft during removal and installation as this will deform the clutch disc. Pull out transmission towards rear and remove.
Fig 9: Locating Clutch Disc Screws
G04726007Courtesy of BMW OF NORTH AMERICA, INC.

Installation: 

Tighten down screws/bolts to specified torque.

Secure special tool and angle of rotation 00 9 120 with magnet 00 9 130 to vehicle underbody.

Screw down aluminium screws/bolts further according to angle of rotation.

Angle of rotation 23 00 2AZ .

Fig 10: Securing Special Tool And Angle Of Rotation (00 9 120) Using Magnet (00 9 130) To Vehicle Underbody
G04726008Courtesy of BMW OF NORTH AMERICA, INC.

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

Replace damaged sleeves.

Ensure correct position of cover plate.

Fig 11: Identifying Dowel Sleeves
G04726009Courtesy of BMW OF NORTH AMERICA, INC.

Check lubrication of transmission input shaft for sticky consistency. If grease is sticky, clean input shaft and REPLACE CLUTCH DISC .

Check clutch disc for friction rust in splines and REPLACE IF NECESSARY .

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

Fig 12: Locating Transmission Input Shaft Lubrication Area
G04726010Courtesy of BMW OF NORTH AMERICA, INC.

Installation: 

Greasing specification:

Fig 13: Identifying Grease Scraper Ring And Splines
G04726011Courtesy of BMW OF NORTH AMERICA, INC.