Refer to repair instructions ROOF OUTER SKIN WITH SLIDE/TILT SUNROOF for procedure and carry over schematically to the vehicle.
STRIP DOWN VEHICLE
Installing roof outer skin
Apply sealant in areas (1) in the same way as in series standard.
BMW X3 Service & Repair Manual > Transfer box: 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
SHAF ...