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Home >> Mini >> 2015 >> Cooper Base, 2D Convertible, 1.6L Eng, Automatic Trans >> Repair and Diagnosis >> Transmission >> Manual Trans >> Manual Transmission - Repair (R58 & R59) -- Cooper >> Transmission In General >> 23 00 026 Removing and installing transmission (GS6-55BG)

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

Special tools required: 

Necessary preliminary tasks: 

Release clips on stop/holder (1).

Detach selector lever cable (2) from ball joint.

Release screw (3) and remove bracket.

Fig 1: Identifying Selector Lever Cable, Holder And Screw
G04796607Courtesy of BMW OF NORTH AMERICA, INC.

Disconnect plug (1) for reversing light switch.

Fig 2: Identifying Reversing Light Switch Plug
G04796608Courtesy of BMW OF NORTH AMERICA, INC.

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

Remove cable (2) with holder from transmission.

Fig 3: Identifying Zero Gear Sensor Plug Connection And Cable
G06916276Courtesy of BMW OF NORTH AMERICA, INC.
NOTE: Pressure line of clutch slave cylinder remains connected.
IMPORTANT: 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 therefore not necessary.

Release nuts (1) and remove clutch slave cylinder.

Tightening torque 21 52 2AZ .

Fig 4: Identifying Clutch Slave Cylinder Nuts
G04796609Courtesy of BMW OF NORTH AMERICA, INC.

Release bolt (1) WAF 13 from above.

Release bolts (2) and remove starter.

Tightening torque 12 411 AZ .

Fig 5: Identifying Starter Bolts
G04796610Courtesy of BMW OF NORTH AMERICA, INC.

Supporting transmission: 

Using 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 fluid level.

Fig 6: Supporting Transmission From Underneath Using Special Tools (23 4 150) And (00 2 030)
G04796605Courtesy of BMW OF NORTH AMERICA, INC.
NOTE: There is no bolt fitted at the lowest point (1) of the transmission.

Release screws.

Tightening torque 23 00 1AZ .

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 Screws
G04796612Courtesy of BMW OF NORTH AMERICA, INC.

Installation note: 

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

Replace damaged fitting sleeves.

Fig 8: Identifying Dowel Sleeves
G04796613Courtesy 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 plate for friction rust in splines and REPLACE clutch plate if necessary.

Fig 9: Locating Transmission Input Shaft
G04796614Courtesy of BMW OF NORTH AMERICA, INC.

Installation note: