23 00 112 Removing And Installing Transmission (GS6S53BZ SMG)

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 completing work:

Perform adaptation using DIS Tester, refer to Service Functions in DIS Tester (Teach in transmission)
Check TRANSMISSION OIL LEVEL
Use only the approved transmission oil
Check FLUID LEVEL in hydraulic system
Read out fault memory and clear entered faults

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

Necessary preliminary tasks:

Disconnect battery
Remove front underbody protection
Remove REINFORCEMENT PLATE .
Important notes on installation are described in this work step
Remove complete EXHAUST SYSTEM .
Remove oxygen sensors

Remove heat shields (1) and (2).

Fig 1: Identifying Heat Shields

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Pull plug (1) off pulse generator.

Release screw (2) and remove pulse generator.

Fig 2: Identifying Pulse Generator Screw

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

Fig 3: Identifying Oil Level Sensor Plug

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Detach plug (1) from cable duct.

Fig 4: 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 5: Pressing Retaining Lugs With Screwdriver

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Release screws (1) to support transmission.

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

Fig 6: Identifying Screws

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Supporting transmission:

Support transmission with special tools 00 2 030 , 23 0 132 , 23 0 131 , 23 0 136 and 21 0 135.

Fig 7: Identifying Special Tools (23 0 132, 23 0 131, 23 0 136, And 21 0 135)

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Unfasten screws (1) and nuts (2).

Remove transmission cross-member.

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

Fig 8: Identifying Cross-Member Screws And Nut

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

Tasks are described in Removing PROPELLER SHAFT .

Disconnect plug connections (1) and (2).

Release cable strap (3).

Fig 9: Identifying Plug Connections And Cable Strap

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Disconnect plug connections (1) and (2) and unclip cable from holder.

Fig 10: Identifying Plug Connections And Cable

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Detach plugs (4) from clutch travel sensor.

Fig 11: Identifying Clutch Travel Sensor Plugs

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Detach plug (1) from sensor.

Fig 12: Identifying Sensor Plug

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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.

Fig 13: Transmission Housing Bolts Tightening/Loosening Sequence

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Installation:

Check that dowel sleeves are correctly seated.

Replace damaged dowel sleeves.

Ensure correct position of cover plate.

Fig 14: Identifying Dowel Sleeves

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Installation:

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

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

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

Fig 15: Locating Transmission Input Shaft

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Installation:

Greasing specification:

Remove and clean RELEASE BEARING AND RELEASE LEVER (do not grease).
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 16: Identifying Splines Of Transmission Input Shaft
Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT:

After completing work:

Perform adaptation using DIS Tester, refer to Service Functions in DIS Tester (Teach in transmission)
Check TRANSMISSION OIL LEVEL
Use only the approved transmission oil
Check FLUID LEVEL in hydraulic system
Read out fault memory and clear entered faults

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