Special tools required:

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00 2 030. See 00 2 030 UNIVERSAL HYDRO-LIFTER BASIC UNIT
23 4 050

IMPORTANT: After replacement, the "Repair" service function must be carried out with GT1.

IMPORTANT: After completing work, check gear oil level and top up if necessary.
Filler plug (1):
Tightening torque 27 00 11AZ. See 27 00 TRANSFER BOX IN GENERAL
Gear oil level up to filler edge of filler plug (1).
Use only the approved transmission fluid.

Failure to comply with this requirement will result in serious damage to the transfer box!

Fig 1: Identifying Oil Filler Plug

G04745099

Courtesy of BMW OF NORTH AMERICA, INC.

Necessary preliminary tasks:

Remove underbody protection
Remove Centre muffler (N53 only)
Remove complete exhaust system. See 18 00 020 REMOVING AND INSTALLING/REPLACING COMPLETE EXHAUST SYSTEM (N52/N52K/N51)
Remove heat shields

Release screws.

Tightening torque 26 11 9AZ. See 26 11 PROPELLER SHAFT COMPLETE

Remove front propeller shaft at output flange of transfer case and tie to one side.

Installation:

Replace screws.

Fig 2: Locating Front Propeller Shaft Bolts

G04745103

Courtesy of BMW OF NORTH AMERICA, INC.

Remove propeller shaft from transmission. See 26 11 000 REMOVING AND INSTALLING PROPELLER SHAFT (CARDAN UNIVERSAL JOINT) COMPLETELY
Release Centre bearing.
Tie propeller shaft to one side.

Tasks are described in Removing propeller shaft.

NOTE: Support transmission with special tool 00 2 030 / 23 4 050. See 00 2 030 UNIVERSAL HYDRO-LIFTER BASIC UNIT ,23 4 150 UNIVERSAL TRANSMISSION BRACKET

Fig 3: Identifying Special Tool

G04745104

Courtesy of BMW OF NORTH AMERICA, INC.

If necessary

Release bolts and remove metal plate (1).

Fig 4: Locating Metal Plate Bolts

G04745105

Courtesy of BMW OF NORTH AMERICA, INC.

Disconnect plugs (1) and (2) from servomotor.

Fig 5: Identifying Plugs And Servomotor

G04745106

Courtesy of BMW OF NORTH AMERICA, INC.

Release screws.

Remove transmission cross-member.

Tightening torque 27 00 10AZ. See 27 00 TRANSFER BOX IN GENERAL

Fig 6: Locating Transmission Cross-Member Bolts

G04745107

Courtesy of BMW OF NORTH AMERICA, INC.

Release screw connection of transfer case.

Tightening torque 27 00 9AZ. See 27 00 TRANSFER BOX IN GENERAL

Remove transfer case.

Installation:

Pay attention to dowel pin (1).

Grease dowel pin (1).

Apply a thin coat of grease to splines.

Grease: WEICON ANTI-SEIZE.

Fig 7: Identifying Grease Dowel Pin

G04745108

Courtesy of BMW OF NORTH AMERICA, INC.