DETROIT DIESEL 53
1.3.2 Crankshaft Oil Seals
The crankshaft surface must be clean and smooth to
prevent damaging the seal lip when a new oil seal is
installed. Slight ridges may be removed from the
crankshaft as outlined under Inspection in Section 1.3.
engines, if the crankshaft cannot be
On In-line
cleaned up satisfactorily, the oil seal may be pressed
into the flywheel housing or the front cover 1/8 " from
its original position.
If excessive wear or grooving is present: install an oil
and 5) which provides a
seal sleeve (Figs. 3,
replaceable wear surface for the lip-type oil seal. The
crankshaft rear oil seal sleeve installer J 21277 (in-line
oil seal sleeve may be used with either the single-lip or
engines).
double-lip type oil seal, and can also be used in
conjunction with the seal spacer. However, an oversize
4. Wipe off any excess sealant.
oil seal must be used with the sleeve.
5. Coat the outside diameter of the sleeve with engine
as
Install the rear oil seal sleeve (Fig. 3)
oil.
follows:
1. Stone the high spots from the oil seal contact
Install the front oil seal sleeve ,Fig. 5) as follows:
surface of the crankshaft.
1. Stone the high spots from the oil seal contact
2. Coat the area of the shaft where the sleeve will be
surface of the crankshaft.
positioned with shellac or an equivalent sealant.
3. Drive the sleeve squarely on the shaft with
Fig. 3 . Use of Rear Oil Seal Sleeve on
Fig. 5 . Use of Front Oil Seal Sleeve on
Engines)
Grooved Crankshaft (In-line
Engines)
Grooved Crankshaft (In-line
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