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

WARNING: This page is about a different car, the 2018 BMW 330i and 2017 BMW 330i. 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 2 220
23 4 050

Attention!

To prevent heavy damage to the engine block, the protruding thread of the transmission bolts absolutely must be checked for damage and corrosion before removal.

If there are signs of corrosion, the rust must be removed and the threads must be cleaned before removal.

Replace rusted, damaged screws.

Failure to comply with this instruction will result in serious damage to the engine block and transmission.

Attention!

After completion of work, check transmission fluid level. Refer to: TRANSMISSION OIL LEVEL

Use only the approved transmission oil. Refer to MANUAL TRANSMISSION - OPERATING FLUIDS

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

Necessary preliminary work:

Disconnect the BATTERY NEGATIVE LEAD .
Remove the REAR UNDERBODY PROTECTION , and FRONT UNDERBODY PROTECTION .
REMOVE EXHAUST SYSTEM .
Remove heat shields.
Partially remove PROPELLER SHAFT .
- Disconnect propeller shaft at transmission.
- Release center mount.
- Tie up the propeller shaft to the vehicle underbody.
  Attention:
  
  Bending the propeller shaft by an excessive angle can cause premature damage to the joint/propeller shaft!
Support engine with lifter when removing transmission.

Removal:

Loosen screws (1).

Remove reinforcement bar (2).

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Slacken nut (1).

Detach cable (2) from starter.

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Release cable (1) from holders.

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Undo the transmission bolts (1).

Release screw and nut (2).

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Undo the transmission bolts (1).

Press acoustic cover (2) slightly to one side.

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Slacken nut (1).

Remove holder (2).

Unscrew nut (3).

Release ground strap (4) from body.

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Pressure line of clutch slave cylinder remains connected.

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

Remove bolts (1) and remove clutch slave cylinder (2) with holder (3).

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Loosen screw (1).

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Pull off retaining clip (2).

Pull gearshift rod (1) out of gearshift rod joint (3).

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Unlock and remove bearing journal in direction of arrow.

Pull gearshift arm forward out of support bearing.

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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 gearbox holder, refer to: UNIVERSAL BMW TRANSMISSION TAKE-UP

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Release screws (1).

Release transmission cross-member from body.

Lower transmission.

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Disconnect connector (1).

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Loosen screws.

Attention!

Do not allow transmission to hang on transmission input shaft when removing and installing, as the clutch disc will be deformed. Pull out transmission towards rear and remove.

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Installation:

Installation note:

Check that fitting sleeves (1) are correctly seated.

Replace damaged sleeves.

Ensure correct position of cover plate.

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Installation note:

Check lubrication of transmission input shaft for sticky consistency. If the grease is sticky, clean the drive shaft and check the clutch disc for the presence of grease. REPLACE THE CLUTCH DISC as needed.

Check clutch disc for frictional corrosion in gearing and replace the DISCS if necessary.

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

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Installation note:

Greasing specification:

Remove and clean release bearing and release lever (do not grease).
Push on grease scraper ring 21 2 220 until limit position.
Grease gearing (1) of input shaft with a brush.
Refer to MANUAL TRANSMISSION - OPERATING FLUIDS
Detach grease scraper ring.
Install the RELEASE LEVER AND RELEASE BEARING

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Transmission flange-mount.

Observe the following in engines B46O, B48M, B48O, B47U, B47K:

Install the screw (1) with the washer (2) (part no. 07 11 9 906 063).

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NOTE: The washer (2) guarantees that a distance (3) is maintained between the screw (1) and the oil pressure sensor and this prevents component contact.

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Insert screws and tighten lightly.

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Connect the connector (1).

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Grease bearing journal and bearing pin.

Grease, refer to MANUAL TRANSMISSION - OPERATING FLUIDS .

Insert gearshift arm.

Install bearing journal in direction of arrow and lock in place.

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Insert screw (1) and tighten.

Tightening torque, refer to: 25 11 2AZ .

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Installation note:

Grease gearshift rod pin.

Grease, refer to MANUAL TRANSMISSION - OPERATING FLUIDS .

Hook gearshift rod (1) into gearshift rod joint (3).

Insert retaining clip (2).

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Check acoustic cover (2) for correct fit.

Insert Torx screws (1) and tighten.

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Insert Torx screws (1) and tighten.

Tightening torque, refer to: 18 31 3AZ .

Tightening torque, refer to: 18 30 3AZ .

Position bolt and nut (2) and tighten.

Tightening torque, refer to: 18 31 4AZ.

Tightening torque, refer to: 18 30 4AZ .

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Lightly tighten the remaining screws on the transmission.

Tighten the screws in the specified screwing sequence.

Tightening torque, refer to: 23 00 1AZ .

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Clip in cable (1).

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Parts: Replace screws.

Install clutch slave cylinder (2) with holder (3).

Insert screws (1) and tighten.

Tightening torque, refer to: 21 52 1AZ .

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Install the transmission cross member.

Insert screws (1) and tighten.

Tightening torque, refer to: 22 32 3AZ .

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Release tensioning strap (1) from transmission.

Remove special tools 23 4 050, 00 2 030 and mounting from the transmission.

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Mount ground strap (4).

Fit nut (3) and tighten.

Install holder (2).

Position nut (1) and tighten.

Tightening torque, refer to: 23 11 8AZ .

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Connect positive battery cable (1) to starter motor.

Move anti-twist lock for positive battery cable on starter up to limit position (2).

Tighten nut (3).

Tightening torque, refer to: 12 42 2AZ , and 12 52 2AZ

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Fit reinforcement bar (2).

Insert screws (1) and tighten.

Tightening torque, refer to: 12 41 1AZ .

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Required reworking:

Install the PROPELLER SHAFT .
Install heat shields.
Install the EXHAUST SYSTEM .
Install the REAR UNDERBODY PROTECTION , and FRONT UNDERBODY PROTECTION .
Connect the BATTERY EARTH LEAD .