23 00 018 Removing and installing transmission (GS6-53BZ) N62/N62TU

WARNING: This page is about a different car, the 2010 BMW 550i, 2009 BMW 550i, and 2008 BMW 550i. However, it is still accessible from the selected car via links, so may be relevant.

Special tools required:

00 2 030 . See MAINTENANCE AND GENERAL INFORMATION - SPECIAL TOOLS .
21 2 240 . See CLUTCH - SPECIAL TOOLS .
23 4 050 . See MANUAL TRANSMISSION - SPECIAL TOOLS .

IMPORTANT: After completion of work, check gearbox oil level.

Use only approved transmission oil. See MANUAL TRANSMISSION - OPERATING FLUIDS .

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

Necessary preliminary tasks:

Disconnect battery . See 12 00... INSTRUCTIONS FOR DISCONNECTING AND CONNECTING BATTERY .
Remove reinforcement plate . See 31 10 010 REMOVING AND INSTALLING/REPLACING REINFORCEMENT PLATE .
Remove exhaust system after catalytic converter. See 18 00 020 REMOVING AND INSTALLING COMPLETE EXHAUST SYSTEM (N62, N62TU) .
Remove oxygen sensors. See EMISSION CONTROL OXYGEN SENSOR .

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 Plug At Reversing Light Switch

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Pull plug (1) off pulse generator.

Release screw (2) and remove pulse generator.

Fig 3: Identifying Plug At Pulse Generator And 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 At 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: Press In Retaining Lugs (1) With Screwdriver And Remove Cable Duct

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Release bolts (1).

Tightening torque 23 00 1AZ . See MANUAL TRANSMISSION - TIGHTENING TORQUES .

Fig 7: Identifying Bolts

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Supporting transmission:

Support transmission with special tools 23 4 050, 00 2 030 .

Secure transmission to mounting with tensioning strap (1).

After completion of work, check transmission oil level. See 00 11..... DRAINING/TOPPING UP GEAR OIL IN MANUAL TRANSMISSION .

Fig 8: Identifying Special Tool (23 4 050) 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 ENGINE AND GEARBOX SUSPENSION (MOUNTS) - TIGHTENING TORQUES .

Fig 9: Identifying Cross-Member Screws And Nuts

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Remove propeller shaft from transmission. See PROPELLER SHAFT - REPAIR .
Release centre bearing.
Tie propeller shaft to one side.

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 - TIGHTENING TORQUE .

Fig 10: Locating Clutch Slave Cylinder Nuts

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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: Levering Out 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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Release screws.

Tightening torque 23 00 1AZ . See MANUAL TRANSMISSION - TIGHTENING TORQUES .

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: Locating Clutch Plate Screws

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Installation:

Check that dowel sleeves are correctly seated.

Replace damaged dowel sleeves.

Fig 15: Identifying Dowel Sleeves Seat

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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. See 21 21 500 REMOVING AND INSTALLING/REPLACING CLUTCH (SAC) .

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 Splines

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Remove and clean release bearing and release lever. See 21 51 500 REMOVING AND INSTALLING OR REPLACING CLUTCH RELEASE BEARING/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 Special Tool (21 2 240)
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