| - Bill C. -
This addresses proper seating of the oil seal that is
installed in the flywheel end of the case.
Of course, you have the engine removed; the clutch and
pressure plate removed; and finally, the large gland nut and pressure plate
removed.
- It should fit far enough into the case that its outer surface does NOT
protrude beyond the surrounding surface of the case. Gently tapping in
with a light shot mallet or using an installation "washer" should be
sufficient.
- Failure to meet this requirement will cause early seal failure
and/or interference with crankshaft endplay as the flywheel back
(face) surface can rub against it.
What can prevent the seal from going in all the way?
- Before installing the seal, check the bore into which it is going, for
burrs, dings, etc., and gasket sealer/glue.
- Carefully remove any burrs, etc., which protrude.
Be Careful! Don’t remove case
material other than protrusions! The case is magnesium.
Glue residue - Some engine builders use a gluey substance in the hope
of obtaining a better seal against leaks. If this old glue is not removed,
it can create enough "grab" that the seal will not easily install
properly. I would suggest something no stronger than a metal brush.
Be Careful! Don’t remove case material!
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