5 Series E34 525td (M51) TOUR
To check the tooth contact pattern, coat the crown wheel teeth
with printer's ink, turn in both directions several times and stop
crown wheel suddenly with a piece of hard wood.
Correction of torsion clearance,
refer to Technical Data
and contact pattern is performed by altering the thickness of both
shims (1).
If the backlash is too large, install a thinner shim on the crown
wheel end.
If backlash is too small, use a thicker shim on the crown wheel
end.
Axial displacement of the crown wheel of 0.01 mm signifies a
change in tooth flank clearance of 0.0076 mm.
Caution!
The total thickness of both shims must not be changed.
If a thinner or thicker shim is required to correct the tooth contact
pattern, the total thickness must be corrected with the second
shim, since otherwise the friction torque of bearings would be
changed again.
Installation:
Dip new shaft seals in final drive gear lube.
Drive shaft seal firmly home with special tool 33 1 230 (impact
bush) in conjunction with special tool 00 5 500 (handle).
Replace drive flange if the bearing surface is seriously scored.
Note:
It is possible that the special tool 33 1 230 might have to be
reworked to compensate for casting tolerances on the side
cover.
RA Replacing input bevel gear and crown wheel (Type M) - final drive housing remove
BMW AG - TIS
23.01.2013 07:44
Issue status (12/2007) Valid only until next DVD is issued
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