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:
DTC Dynamic Traction
Control
Concept
DTC is a version of the DSC Dynamic Stability
Control where forward momentum is optimized.
The system ensures maximum headway on special
road conditions or loose road surfaces, for instance
unplowed snowy roads, but with somewhat
limited driving stability.
General information
When DTC is ac
Operating concept
Vehicle features and
options
This chapter describes all standard, country-specific
and optional features offered with the series.
It also describes features and functions that are
not necessarily available in your vehicle, e.g., due
to the selected options or country versions. This
also applies to
