27 10 010 Removing and Installing Transfer Box (ATC 350)

27 10 010 Removing And Installing Transfer Box (ATC 350)

Special tools required:







IMPORTANT: Before and after replacement, execute the "Repair" service function with the BMW diagnosis system.

IMPORTANT:
After completion of work, check transmission oil level and top up if necessary.
Failure to comply with this requirement will result in serious damage to the transfer box.







Necessary preliminary work:
- Disconnect battery earth lead
- Remove underbody protection
- Remove complete exhaust system
- Remove heat shields
- Disconnect propeller shaft at gearbox, release centre mount
- Tie back propeller shaft to underbody
- IMPORTANT:
- An excessive deflection angle of the propeller shaft may damage 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.







NOTE: Support transmission with special tools 00 2 030, 23 4 050.







Release screws (1).
Remove cooling air duct (2).







Undo bolts (1) for gearbox mount.
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.

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