23 00 017 Removing and installing transmission (GS6-17BG) N52K/N53

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2010 BMW 528xi, 2010 BMW 528i, 2009 BMW 528xi, 2009 BMW 528i, and 2008 BMW 528xi. However, it is still accessible from the selected car via links, so may be relevant.

Special tools required:

00 2 030
00 9 010
00 9 120
00 9 130 See MAINTENANCE AND GENERAL INFORMATION - SPECIAL TOOLS .
21 2 221 See CLUTCH - SPECIAL TOOLS .
23 4 050 See MANUAL TRANSMISSION - SPECIAL TOOLS .

IMPORTANT: After completion of work, check gear oil level .
Use only the approved gear oil . See MANUAL TRANSMISSION - OPERATING FLUIDS .

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

IMPORTANT: Aluminium-magnesium materials.
No steel screws/bolts may be used due to the threat of electrochemical corrosion.
A magnesium crankcase requires aluminum screws/bolts exclusively.
Aluminum screws/bolts must be replaced each time they are released.
The end faces of aluminum screws/bolts are painted blue for the purposes of reliable identification.
Jointing torque and angle of rotation must be observed without fail (risk of damage) .

Necessary preliminary tasks:

Disconnect battery . See 12 00... INSTRUCTIONS FOR DISCONNECTING AND CONNECTING BATTERY .
Remove underbody protection and bracket at front and rear
Remove reinforcement plate
Important notes on installation are described in this work step

Remove complete exhaust system . See EXHAUST SYSTEM - REPAIR INSTRUCTIONS .

Remove heat shields (1) and (2).

Fig 1: Identifying Heat Shields

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Disconnect plug connector (1).

Release screws (2).

Remove cover plate (3).

Unscrew holder (4).

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

Fig 2: Identifying Plug Connector, Screw And Cover Plate

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Installation:

Release aluminum screw on right next to cable retaining plate with special tool 00 9 010 .

Aluminum screws must be replaced. Tightening torque 23 00 2AZ . See MANUAL TRANSMISSION - TIGHTENING TORQUES .

Fig 3: Identifying Special Tool (00 9 010)

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NOTE: N53 only

Detach cable from bracket (1).

Detach plug (1) from reversing light switch.

Fig 4: Identifying Cable From Bracket

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Release cable from retainers.

Fig 5: Identifying Plug From Reversing Light Switch

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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).

Tasks are described in ENGINE AND GEARBOX SUSPENSION - REPAIR INSTRUCTIONS .

After completion of work, check transmission oil level.

Fig 6: Identifying Special Tool And Tensioning Strap

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Remove transmission cross-member .

Fig 7: Identifying Exhaust System Bracket And Bolts

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Release bolts (1).

Remove exhaust system bracket (2).

Tightening torque 23 71 4AZ . See MANUAL TRANSMISSION - TIGHTENING TORQUES .

Release screws.

Remove transmission bearing block (1).

Tightening torque 23 71 4AZ . See MANUAL TRANSMISSION - TIGHTENING TORQUES .

Fig 8: Identifying Transmission Bearing Block And Screw

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

Tasks are described in Removing PROPELLER SHAFT .

Fig 9: Identifying Shift Rod And Retainer

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Lift off retainer (1).

Disconnect shift rod (2).

Installation:

Grease shift rod.

Grease, refer to MANUAL TRANSMISSION - OPERATING FLUIDS .

Make sure shims (3) are in correct position.

Fig 10: Identifying Bearing Pins

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

Lift out shift arm (1).

Installation:

Grease bearing pins (1).

Grease, refer to MANUAL TRANSMISSION - OPERATING FLUIDS .

Fig 11: Identifying Bearing Pins

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

Tightening torque 21 52 5AZ . See CLUTCH - TIGHTENING TORQUES .

Fig 12: Identifying Nuts And Clutch Slave Cylinder

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Release screws.

Installation:

Observe screw fastening sequence without fail.

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

Aluminum screws must be replaced.

Tightening torque and angle of rotation Aluminum screws 23 00 2AZ . 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 13: Transmission Housing Bolts Tightening/Loosening Sequence

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Installation:

Secure angle of rotation special tool 00 9 120 with magnet 00 9 130 to floor plate. Screw down aluminum screws according to angle of rotation.

Angle of rotation 23 00 2AZ .

Fig 14: Identifying Special Tool (00 9 130) And (00 9 120)

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Installation:

Check that dowel sleeves are correctly seated.

Replace damaged dowel sleeves.

Ensure correct position of cover plate.

Fig 15: Identifying Dowel Sleeves And Cover Plate

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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: Identifying Transmission Input Shaft

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Installation:

Greasing specification:

Remove and clean release bearing and release lever .
Push on grease scraper ring 21 2 221 as far as it will go.
Grease splines (1) of input shaft with a brush. Refer to MANUAL TRANSMISSION - OPERATING FLUIDS .

Fig 17: Identifying Special Tools And Input Shaft Splines
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Detach grease scraper ring.