23 00 017 Removing and installing transmission (GS6-17BG) N51/N52/N52K

WARNING: This page does not describe the selected car, but rather 11 other vehicles, including the 2008 BMW 328xi, 2008 BMW 328i, 2008 BMW 323i, 2007 BMW 328xi, and 2007 BMW 328i. However, it is still accessible from the selected car via links, so may be relevant.

Special tools required:

00 2 030
00 9 120
00 9 130
21 2 221
23 0 050
23 0 132

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

Use only the Approved Gear Oil .

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 these 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:

Release screws (1).

Remove exhaust system bracket (2).

For tightening torque refer to 23 00 1AZ in COMPLETE TRANSMISSION .

Fig 1: Identifying Exhaust System Bracket And Bracket Mounting Screws

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Remove holder (1).

Fig 2: Identifying Holder

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Disconnect connector cable (1).

Release screws (2).

Remove bracket (3).

For tightening torque refer to 23 00 1AZ in COMPLETE TRANSMISSION .

Illustration similar

Fig 3: Identifying Connector Cable, Bracket And Mounting Screw

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Unclip cable (1) from holder.

Release screw (2) and remove holder (3).

Fig 4: Identifying Transmission Cable, Holder And Mounting Screw

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Detach plug (1) from reverse gear switch.

Detach cables from fixtures on transmission.

Fig 5: Identifying Reverse Gear Switch Plug And Cable Fixtures On Transmission

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Supporting transmission:

Support transmission with special tools 23 0 050, 23 0 132 and 00 2 030.

Tasks are described in Transmission Bracket .

Fig 6: Identifying Special Tools (23 0 132), (23 4 050) And (00 2 030)

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Remove screws and nuts.

Remove cross-member (1).

For tightening torque refer to 23 71 1AZ/2AZ in 23 71 TRANSMISSION MOUNTS .

Fig 7: Locating Cross-Member Screw And Nuts

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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: Relieve tension on clutch slave cylinder slowly; otherwise air will be drawn in through sealing sleeve.

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

For tightening torque refer to 21 52 5AZ in21 52 CLUTCH OPERATION (HYDRAULIC)

Fig 8: Identifying Clutch Slave Cylinder And Retaining Nuts

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Detach locking clip.

Fig 9: Detaching Clutch Slave Cylinder Locking Clip

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Pull shift rod (1) out of shift rod joint (2).

Installation:

Grease shift rod pin (3).

Grease,

Refer to BMW Service Operating Fluids .

Fig 10: Identifying Shift Rod, Shift Rod Joint And Shift Rod Pin

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Unlock bearing pin (1) in direction of arrow and remove.

Fig 11: Removing Bearing Pin

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Lift out shift arm (1).

Installation:

Grease bearing pin.

Grease,

Refer to BMW Service Operating Fluids .

Fig 12: Lifting Out Shift Arm

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Release screws.

Installation:

For tightening torque refer to steel screws 23 00 1AZ in COMPLETE TRANSMISSION .

Aluminum screws/bolts must be replaced.

For tightening torque and angle of rotation of aluminum screws/bolts refer to 23 00 2AZ in COMPLETE TRANSMISSION

IMPORTANT: Do not suspend the transmission from the transmission input shaft during removal and installation as this will deform the clutch plate. Pull out transmission towards rear and remove.

Fig 13: Identifying Transmission Screws And Bolts

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Installation:

Tighten down screws/bolts to specified torque.

Secure special tool and angle of rotation 00 9 120 with magnet 00 9 130 to floor plate.

Continue to screw down blue aluminum screws/bolts in accordance with angle of rotation.

For angle of rotation refer to 23 00 2AZ in COMPLETE TRANSMISSION .

Fig 14: Securing Special Tool (00 9 120) And (00 9 130) To Floor Plate

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Installation:

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

Replace damaged sleeves.

Ensure correct position of cover plate.

Fig 15: Identifying Sleeves For Correct Seating

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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.

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

Fig 16: 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 2 221 as far as it will go.
Grease splines (1) of input shaft with a brush.
Refer to BMW Service Operating Fluids
Detach grease scraper ring.

Fig 17: Locating Splines Of Input Shaft
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