23 00 018 Removing And Installing Transmission (GS6-53BZ)

WARNING: This page is about a different car, the 2007 BMW 550i and 2006 BMW 550i. However, it is still accessible from the selected car via links, so may be relevant.

Special tools required:

IMPORTANT:

After completion of work, check GEAR OIL LEVEL .

Use only the approved gear oil.

Failure to comply with this requirement will result in serious damage to the transmission.

Necessary preliminary tasks:

Disconnect battery.
Remove REINFORCEMENT PLATE .
Remove underbody protection at front and rear.
Remove EXHAUST SYSTEM after catalytic converter.
Remove oxygen sensors.

Remove heat shields (1) and (2).

Fig 1: Identifying Heat Shields

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Disconnect plug (1) from reversing light switch.

Release cable from retainers.

Fig 2: Locating Reversing Light Switch

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Pull plug (1) off pulse generator.

Release screw (2) and remove pulse generator.

Fig 3: Identifying Pulse Generator Screw

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

Fig 4: Identifying Oil Level Sensor Plug

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Detach plug (1) from cable duct.

Fig 5: Identifying Plug And Cable Duct

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

Tie wiring harness to one side.

Fig 6: Pressing Retaining Lugs With Screwdriver

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Release screws (1).

Tightening torque 23 00 1AZ . See COMPLETE TRANSMISSION for specs.

Fig 7: Identifying Screws

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Supporting transmission:

Support with special tools 23 0 136 , 23 0 131 , 23 0 132 , and 00 2 030.

Fig 8: Identifying Special Tools (23 0 136, 23 0 131, 23 0 132 And 00 2 030)

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Release screws (1) and nuts (2) and remove cross- member.

Tightening torque 22 32 3AZ/4AZ . See TRANSMISSION MOUNTS for specs.

Fig 9: Identifying Cross- Member Screws And Nut

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Remove propeller shaft from transmission.
Release center bearing.
Tie propeller shaft to one side.

Tasks are described in Removing PROPELLER SHAFT .

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 . See CLUTCH OPERATION (HYDRAULIC) for specs.

Fig 10: Identifying Clutch Pressure Line

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Lever out retainer (1).

Disengage shift rod (2).

Installation:

Grease shift rod.

Make sure shims (3) are in correct position.

Fig 11: Identifying Shift Rod And Retainer

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Release and remove bearing pins (1) in direction of arrow.

Fig 12: Removing Bearing Pins

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Lift out shift arm (1).

Installation:

Grease bearing pins (1).

Fig 13: Lifting Out Shift Arm

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Unfasten screws.

Tightening torque 23 00 1AZ . See COMPLETE TRANSMISSION for specs.

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.

Fig 14: Identifying Tightening Sequence For Transmission Bolts

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Installation:

Check that dowel sleeves are correctly seated.

Replace damaged dowel sleeves.

Fig 15: Identifying Dowel Sleeves

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Installation:

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

Check clutch plate for friction rust in splines and REPLACE if necessary.

Mechanically remove existing grease and lining abrasion from splines of clutch plate (with a cloth).

Fig 16: Locating Transmission Input Shaft

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Installation:

Greasing specification:

Remove and clean RELEASE BEARING AND RELEASE LEVER .
Push on grease scraper ring 21 2 240 as far as it will go.
Grease splines (1) of input shaft with a brush.
Detach grease scraper ring.

Fig 17: Identifying Splines Of Transmission Input Shaft
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