BMW X3 (F25) Service & Repair Manual: Transmission shafts

BMW X3 (F25) Service & Repair Manual / Transmission / Transmission shafts

Renewing radial shaft seal for drive flange (atc 45l)

Special tools required:

  • 23 0 490
  • 27 1 430

IMPORTANT: After completion of work, CHECK TRANSMISSION OIL LEVEL and top up if necessary.

For this transfer box, use approved TRANSMISSION OIL only.

Necessary preliminary tasks:

  • Remove TRANSFER BOX.

Drive a hole into radial shaft seal (1) using a center punch (2).

IMPORTANT: Do not use a drill as swarf may result in transmission failure.

Transmission

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Screw special tool 23 0 490 into radial shaft seal.

Drive out radial shaft seal (1) with impact weight (2).

Transmission

Installation note:

Coat sealing lips of new radial shaft seal with clean transmission oil.

Drive in radial shaft seal with special tool 27 1 430 .

Transmission

Reassemble the vehicle.

Check oil level.

Check transmission for leaks.

Replacing output flange on rear transfer box (atc 45l)

IMPORTANT: After completing work, check TRANSMISSION OIL LEVEL and top up if necessary.

Use only the approved TRANSMISSION OIL .

NOTE:

  • Replace output flange only together with a new radial shaft seal.
  • Procedure for removing output flange is identical to replacing RADIAL SHAFT SEAL.

Installation note:

  • Thickness of new shim must be determined before output flange is installed.

Determine and note down dimension A of output flange (old and new).

Transmission

Determine and note down dimension B of output flange (old and new).

Transmission

Determine old dimension C, thickness of shim.

Transmission

Installation note:

Calculate thickness of new shim:

1. Add old dimension A of output flange (previous) and old dimension C of shim Then subtract old dimension B from old result A+C.

2. Subtract dimension B from dimension A of output flange (new).

3. Then subtract result of step 2 from result of step 1.

Replacing output flange on transfer box at rear (atc450)

IMPORTANT: After completing work, check transmission oil level and top up if necessary.

Use only the approved TRANSMISSION OIL .

NOTE:

  • Replace output flange only together with a new radial shaft seal.
  • Operations for removing output flange are identical to replacing RADIAL SHAFT SEAL

Installation note:

  • Thickness of new shim must be determined before output flange is installed

Determine and note down dimension A of output flange (old and new).

Transmission

Determine and note down dimension B of output flange (old and new).

Transmission

Determine old dimension C, thickness of shim.

Transmission

Installation note:

Calculate thickness of new shim:

1. Add old dimension A of output flange (previous) and old dimension C of shim Then subtract old dimension B from old result A+C.

2. Subtract dimension B from dimension A of output flange (new).

3. Then subtract result of step 2 from result of step 1.

Replacing radial shaft seal for actuator shaft (atc 450)

Special tools required:

  • 11 1 200
  • 11 1 380
  • 23 0 490

IMPORTANT:

Read and comply with notes on protection against electrostatic discharge (ESD protection).

After completion of the repair work, CHECK TRANSMISSION OIL LEVEL and top up if necessary.

Use only the approved TRANSMISSION OIL .

Necessary preliminary tasks:

  • Disconnect NEGATIVE BATTERY CABLE
  • Remove CROSS MEMBER .

Disconnect connector (1).

Release screws (2) and remove transfer box from control unit (longitudinal torque module) (3).

Transmission

Screw special tool 23 0 490 into radial shaft seal.

Drive out radial shaft seal (1) with impact weight (2).

Transmission

Push the assembly sleeve 11 1 380 over the actuator shaft.

IMPORTANT: Nonobservance involves a risk of damage to the radial shaft seal.

Transmission

Slide the new radial shaft seal (1) over the assembly sleeve (2) onto the actuator shaft.

Transmission

Drive radial shaft seal fully home using special tool 11 1 200 and plastic hammer.

Remove the assembly sleeve.

Transmission

Replacing radial shaft seal for actuator shaft (atc 45l)

Special tools required:

  • 11 1 200
  • 11 1 380
  • 23 0 490

IMPORTANT: Read and comply with notes on protection against electrostatic discharge (ESD protection).

After completion of the repair work, CHECK TRANSMISSION OIL LEVEL and top up if necessary.

Use only the approved TRANSMISSION OIL .

Necessary preliminary tasks:

  • Disconnect BATTERY EARTH LEAD
  • Remove CROSS MEMBER .

Disconnect connector (1).

Release screws (2) and remove transfer box from control unit (longitudinal torque module) (3).

Transmission

Screw special tool 23 0 490 into radial shaft seal.

Drive out radial shaft seal (1) with impact weight (2).

Transmission

Push the assembly sleeve 11 1 380 over the actuator shaft.

IMPORTANT: Nonobservance involves a risk of damage to the radial shaft seal.

Transmission

Slide the new radial shaft seal (1) over the assembly sleeve (2) onto the actuator shaft.

Transmission

Drive radial shaft seal fully home using special tool 11 1 200 and plastic hammer.

Remove the assembly sleeve.

Transmission

Replacing radial shaft seal for drive flange (atc 450)

Special tools required:

  • 23 0 490
  • 27 1 430

IMPORTANT: After completion of work, CHECK TRANSMISSION OIL LEVEL and top up if necessary.

For this transfer box, use approved TRANSMISSION OIL only.

Necessary preliminary tasks:

  • Remove TRANSFER BOX.

Drive a hole into radial shaft seal (1) using a center punch (2).

IMPORTANT: Do not use a drill as drillings may result in transmission malfunction.

Transmission

Screw special tool 23 0 490 into radial shaft seal.

Drive out radial shaft seal (1) with impact weight (2).

Transmission

Installation note:

Coat sealing lips of new radial shaft seal with clean transmission oil.

Drive in radial shaft seal with special tool 27 1 430 .

Transmission

Reassemble the vehicle.

Check oil level.

Check transmission for leaks.

Replacing radial shaft seal for output flange (atc 450)

Special tools required:

  • 27 1 440

IMPORTANT: After completing repair work, check transmission oil level and top up if necessary.

For this transfer box, use approved TRANSMISSION OIL only.

Necessary preliminary tasks:

  • Remove PROPELLER SHAFT

Release circlip (1).

Transmission

Release output flange with three-claw extractor tool.

Lever radial shaft seal out of housing with a suitable tool.

IMPORTANT: Do not damage housing.

Transmission

Installation note:

Replace O-ring in output flange.

Check that O-ring is in correct position.

Transmission

Installation note:

Coat sealing lips of new radial shaft seal with clean transmission oil.

Drive in radial shaft seal with special tool 27 1 440 .

Transmission

Installation note:

  • Push on output flange
  • Press down output flange using 2 screwdrivers
  • Shim
  • Continue pressing output flange down until retaining groove is completely visible
  • Fit circlip

Transmission

Replacing radial shaft seal for output flange (atc 45l)

Special tools required:

  • 27 1 440

IMPORTANT: After completing repair work, check TRANSMISSION OIL LEVEL and top up if necessary.

For this transfer box, use approved TRANSMISSION OIL only.

Necessary preliminary tasks:

  • Remove PROPELLER SHAFT .

Release circlip (1).

Transmission

Release output flange with three-claw extractor tool.

Lever radial shaft seal out of housing with a suitable tool.

IMPORTANT: Do not damage housing.

Transmission

Installation note:

Replace O-ring in output flange.

Check that O-ring is in correct position.

Transmission

Installation note:

Coat sealing lips of new radial shaft seal with clean transmission oil.

Drive in radial shaft seal with special tool 27 1 440 .

Transmission

Installation note:

  • Push on output flange
  • Press down output flange using 2 screwdrivers
  • Shim
  • Continue pressing output flange down until retaining groove is completely visible
  • Fit circlip

Transmission

Replacing radial shaft seal for output to the front axle (atc 450)

Special tools required:

  • 23 0 490
  • 27 1 470
  • 83 30 2 318 114

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

For these transfer boxes, use approved TRANSMISSION OIL only.

Necessary preliminary tasks:

  • Remove front PROPELLER SHAFT .

Remove protective cap (1) with a screwdriver.

Transmission

Drive a hole into radial shaft seal (1) using a center punch (2).

IMPORTANT: Do not use a drill as swarf may result in transmission malfunction.

Transmission

Screw in special tool 23 0 490 .

Drive out radial shaft seal (1) with impact weight (2).

Transmission

Drive in radial shaft seal with special tool 27 1 470 or 83 30 2 318 114. (Observe diameter of radial shaft seal)

Transmission

Reassemble the vehicle.

Check oil level.

Check gearbox for leaks

Replacing radial shaft seal for output to the front axle (atc 45l)

Special tools required:

  • 23 0 490
  • 27 1 470
  • 2 318 114

IMPORTANT: After completion of the repair work, CHECK GEARBOX OIL LEVEL.

For these transfer boxes, use approved TRANSMISSION OIL only.

Necessary preliminary tasks:

  • Remove front PROPELLER SHAFT .

Remove protective cap (1) with a screwdriver.

Transmission

Drive a hole into radial shaft seal (1) using a center punch (2).

IMPORTANT: Do not use a drill as drillings may result in transmission malfunction.

Transmission

Screw in special tool 23 0 490 .

Drive out radial shaft seal (1) with impact weight (2).

Transmission

Drive in radial shaft seal with special tool 2 318 114 .

Transmission

Reassemble the vehicle.

Check oil level.

Check transmission for leaks.

Transfer box
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Transfer box special tools
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Other materials:

BMW X3 (F25) Owners Manual > Notes: Status of the Owner's Manual
Basic information The manufacturer of your vehicle pursues a policy of constant development that is conceived to ensure that our vehicles continue to embody the highest quality and safety standards. In rare cases, therefore, the features described in this Owner's Manual may differ from thos ...