27 10 010 Removing and installing transfer box (ATC 35L)
WARNING: This page does not describe the selected car, but rather 15 other vehicles, including the 2015 BMW Alpina B7L xDrive, 2015 BMW Alpina B7 xDrive, 2015 BMW 750i xDrive, 2015 BMW 750Li xDrive, and 2014 BMW Alpina B7L xDrive. However, it is still accessible from the selected car via links, so may be relevant.
Special tools required
IMPORTANT:
Before and after replacement, execute the "Repair" service function with the BMW diagnosis system.
IMPORTANT:
After completion of work, CHECK OIL LEVEL and top up if necessary.
Failure to comply with this requirement will result in serious damage to the transfer box!
Failure to comply with this requirement will result in serious damage to the transfer box!
Necessary preliminary tasks:
- Disconnect BATTERY EARTH LEAD
- Remove UNDERBODY PROTECTION
- Remove COMPLETE EXHAUST SYSTEM
- Remove heat shields
- Partially remove PROPELLER SHAFT
- Disconnect propeller shaft at transmission.
- Release center mount.
- Tie up propeller shaft to underbody.WARNING: Bending the propeller shaft by an excessive angle can cause premature damage to the joint/propeller shaft!
- Support gearbox with jack when removing the transfer box.
Release screws.
Tightening torque 26 11 7AZ .
Remove front propeller shaft at output flange of transfer box and tie to one side.
Installation note:
Replace screws.
If necessary, release screws (1) for transmission support bracket.
Tightening torque 22 32 10AZ .
Release screws.
Remove transmission cross member.
Tightening torque 22 32 3AZ .
Tightening torque 22 32 6AZ .
Disconnect connector (1) from transfer box control unit (linear force module) (2).
Slightly lower gearbox.
Release screw connection of transfer box.
Tightening torque 27 10 1AZ .
Remove transfer box.
Installation note:
Pay attention to dowel pin (1).
Grease dowel pin (1).
Apply a thin coat of grease to gearing.
Grease: WEICON ANTI-SEIZE.