BMW 7 Series: Removing And Installing Three-Hole Flange
Notes
IMPORTANT: It is absolutely necessary to replace the sunk nut! The sunk nut already has a screw locking.
After the propeller shaft has been screwed into the rear axle final drive (sunk nut), a hardening time of at least 2 hours is absolutely necessary.
The hardening time may be extended at lower temperatures! Failure to comply with these instructions may cause serious damage!
Necessary preliminary work
- Remove PROPELLER SHAFT
Since the three-hole flange, the flexible disc and the propeller shaft are balanced as a single unit, the balance quality of the propeller shaft, flexible disc and three-hole flange may be compromised slightly when the three-hole flange is replaced.
IMPORTANT: Before removing propeller shaft: The three-hole flange and the propeller shaft must be reassembled in the same position.
Mark three-hole flange (1), flexible disc (2) and propeller shaft (3) in one plane.
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Fig. 11: Marking Three-Hole Flange, Flexible Disc And Propeller Shaft In One
Plane
Release insert nut against direction of travel in clockwise direction with special tool 33 5 040 and 33 5 070.
Grip with special tool 23 0 020.
Release three-hole flange (1) from bevel pinion.
Tightening torque, see 26 11 6AZ under PROPELLER SHAFT. COMPLETE.
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Fig. 12: Removing Three-Hole Flange From Bevel Pinion Using Special Tool 23 0
020
Remove retaining clip (1) and gasket (2).
Installation note: Retaining clip and gasket must be replaced.
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Fig. 13: Identifying Clip And Gasket
Remove insert nut (1).
Installation note: Insert nut must be replaced.
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Fig. 14: Identifying Insert Nut
Before installing three-hole flange: Clean insert collar (1) on flange nut and gearing on bevel pinion (2).
Fill insert collar (1) with grease.
Grease: See DRIVESHAFT - OPERATING FLUIDS.
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Fig. 15: Identifying Collar And Bevel Pinions
IMPORTANT: Thread of flange hub must not be contaminated with grease.
Clean thread (1) of flange hub to remove adhesive residues.
Clean hub teeth (2), then coat with grease.
Grease: See DRIVESHAFT - OPERATING FLUIDS.
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Fig. 16: Identifying Thread Of Flange And Hub Teeth
Place flange nut (1) with seal in insert collar of flange nut.
Install retaining clip (2).
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Fig. 17: Identifying Flange Nut With Seal And Retaining Clip
IMPORTANT: The bihexagonal flange nut must not be used for bracing.
Failure to comply with this instruction may result in serious damage to the rear axle final drive.
IMPORTANT: Insert nut must be screwed into place within 5 minutes.
Tightening torque, see 26 11 6AZ under 26 11 PROPELLER SHAFT. COMPLETE.
Slide drive flange (1) to the limit position onto insert nut and secure.
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Fig. 18: Sliding Drive Flange Onto Nut
READ NEXT:
Removing And Installing/Replacing Front Centering Mount For
Propeller Shaft
Necessary preliminary work
Remove PROPELLER SHAFT.
Completely fill centering bore hole (1) with viscous grease.
Drive special tool 11 1 310 with a plastic hammer into centering bore hole.
The cen
Replacing Center Mount Gaiter
Necessary preliminary work
Remove PROPELLER SHAFT.
NOTE: The propeller shaft is balanced.
The front and rear propeller shafts must be reassembled in the same position.
Detach gaiter (1) from groo
SEE MORE:
Rear window roller
sunblind
General information
The safety switch in the driver's door can be
used to prevent children from operating the roller
sunblind using the switches in the rear, for instance.
Additional information:
Safety switch
Safety information
NOTICE
When operating the roller sunblind, objects
stored on the shelf
Removing And Installing/Replacing Feed Line (N63)
Notes
WARNING: Clamp off BATTERY NEGATIVE TERMINAL (risk of fire due to
shortcircuiting
on removal).
Electric fuel pump starts up automatically when door is opened!
Carry out installation work on fuel system only with coolant temperature
below 40ºC.
Wear protective goggles.
Wear protective glove
