Replacement of the crankshaft oil seal (Transmission)

11 14 151

This workshop manual is valid for the following engines:Note:

M40 / M42 / M43 / M43TU / M44
M50 / M52 / M52TU / M54 / M56
S52 / S54

Necessary preliminary tasks:
Remove the gearbox
Drain the engine oil.
Remove flywheel

Release screws on oil sump Transmission.
Loosen the screws on oil sump.
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Release screws on crankshaft rear oil seal cover.
Carefully detach oil sump gasket from the rear oil seal cover and remove the cover.

Note:
After removing the rear gland:
Check gasket oil pan for damage.
If necessary, remove oil sump and replace seal.
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Note:
Since 04/1998 commercially and is used when replacing a new type of oil seal. This gland must be stored only with a special “supporting sleeve.”

If the gland is stored without the bearing sleeve (1) for longer than six months, then it does not have operational reliability. This oil seal can not be used anymore.
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Distinguishing features:
– (1) New version “without the helical coiled spring expander”
– (2) Old version “with a spiral coiled spring expander”

A warning!
In the new version (1) the working edge of the gland is very sensitive, and it is by no means impossible to bend. Do not touch the edge of the working hands.
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Note:
adjustable gland supplied with gland.

If necessary, remove and install a new oil seal with special tool 11 1 260, staffed with special tool 00 5 500.
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Check dowel sleeves (1) for damage and correct installation.
Replace the gasket (2).

On the corner joints parting line to the oil sump evenly apply a thin layer of Drei Bond 1209 (refer. To BMW Parts Service).
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A warning!
For the stuffing box in the new design tool 11 2 213 can not be used.ИзображениеNote:

only “support bushing (1)” can be used when installing the cover with oil seal on the crankshaft as a mounting device.

Oil the seating surface of the crankshaft.
A warning!
Replace cover crankshaft rear oil seal using the bearing bush (1) precisely to avoid warping.
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Note:
Thread the bolts (1) is covered by a sealing means.
Replace the screws (1).

Install and tighten all screws on the gland.
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Note:
Save the bearing bush (1) gland in the new version to use it as a “special tool”, then result in unusable and dispose of special tool 11 2 213.

With the bearing sleeve (1) can be installed in new gaskets, and in the old version.
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