1.3.2 Crankshaft Oil Seals
DETROIT DIESEL 53
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.
On In-line engines, if the crankshaft cannot be 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 seal sleeve (Figs. 3, and 5) which provides a replaceable wear
surface for the lip-type oil seal. The oil seal sleeve may be used with either the single-lip or double-lip type oil seal, and
can also be used in conjunction with the seal spacer. However, an oversize oil seal must be used with the sleeve.
Install the rear oil seal sleeve (Fig. 3) as follows:
1.
Stone the high spots from the oil seal contact surface of the crankshaft.
2.
Coat the area of the shaft where the sleeve will be positioned with shellac or an equivalent sealant.
3.
Drive the sleeve squarely on the shaft with crankshaft rear oil seal sleeve installer J 21277 (in-line engines).
4.
Wipe off any excess sealant.
5.
Coat the outside diameter of the sleeve with engine oil.
Install the front oil seal sleeve (Fig. 5) as follows:
1.
Stone the high spots from the oil seal contact surface of the crankshaft.
Fig. 3 - Use of Rear Oil Seal Sleeve on
Fig. 5 - Use of Front Oil Seal Sleeve on
Grooved Crankshaft (In-Line Engines)
Grooved Crankshaft (In-line Engines)
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