BMW 7 Series: Replacing Shaft Seal For Drive Flange On Rear Differential (Inserted Propeller Shaft)

Notes

IMPORTANT: Use only APPROVED OILS.

Failure to comply with this instruction will result in serious damage to the rear axle final drive!

Necessary preliminary tasks

• Remove THREE-HOLE FLANGE

Remove retaining clip (1) and insert nut (2) with diaphragm seal.

Fig. 54: Identifying Retaining Clip And Nut

Mark position of flange nut (1) to bevel pinion (2).

Fig. 55: Identifying Flange Nut And Bevel Pinion

Release flange nut with special tools 33 5 050 and 33 5 070 by gripping bevel pinion with special tools 33 5 060 and 33 5 070.

Fig. 56: Gripping Bevel Pinion Using Special Tools (33 5 060) And (33 5 070)

Pull out radial shaft seal with special tool 00 5 010.

Fig. 57: Pulling Radial Shaft Seal Using Special Tool (00 5 010)

Coat sealing lips of new radial shaft seal and sealing surface of bevel pinion with final drive oil.

Drive in radial shaft seal with special tool 33 5 080.

Fig. 58: Installing Radial Shaft Seal Using Special Tool (33 5 080)

Clean bevel pinion thoroughly to remove remnants of screw locking agent.

Fig. 59: Cleaning Bevel Pinion

Check dust plate for damage, replace if necessary.

IMPORTANT: Clean flange nut thoroughly to remove remnants of grease and screw locking agent.

Coat at least four thread turns of flange nut with "DREI BOND adhesive type 1385".

Fig. 60: Identifying Pack Collar Insert And Grease Shaded Area

IMPORTANT: In order to avoid damaging the rear axle final drive, do not under any circumstances tighten down the flange nut (1) beyond the marker point of the bevel pinion (2).

Fig. 61: Identifying Flange Nut And Bevel Pinion

Place insert nut (2) with diaphragm seal in flange nut.

Install retaining clip (1).

Fig. 62: Identifying Insert Nut And Retaining Clip

After installation

• Check FINAL DRIVE OIL LEVEL , correct if necessary.

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