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:
If equipped with Equipment
Stop Assistant
Concept
If the driver is no longer fit to drive, the system
helps to safely bring the vehicle to a standstill.
General information
The emergency stop function is not triggered
automatically. The emergency stop function can
only be triggered manually by the occupants.
When the system is activated, t
Vertical Dynamics Control (VDC)
Control Unit
Fig. 124: Identifying VDM
INDEX REFERENCE CHART
VDM
The location of the VDM control unit is dependent on the country in which the
vehicle is sold.
On left-hand drive vehicles the control unit is fitted inside the
passenger compartment near the right A-pillar
(as illustrated)
