1.3.2 Crankshaft Oil Seals
DETROIT DIESEL 53
Inspect the rear end of the crankshaft at the flywheel
connection for signs of fretting.
The rear seal area of the crankshaft 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.
If the crankshaft cannot be cleaned up satisfactorily, the
oil seal may be pressed into the flywheel housing or the
front cover I/8" from its original position.
3.
Drive the sleeve squarely on the shaft with
crankshaft rear oil seal sleeve installer J 21277.
If excessive wear or grooving is present, install an oil
4. Wipe off any excess sealant.
seal sleeve (Figs. 3, 4 which provides a replaceable
wear surface for the lip-type oil seal. An oversize seal
Install the front oil seal sleeve (Fig.4 ) as follows:
will be required with use of the sleeve.
1. Stone the high spots from the oil seal contact surface
Install the rear oil seal sleeve (Figs. 3 and 4) as follows:
of the crankshaft.
1. Stone the high spots from the oil seal contact surface
2. Coat the area of the shaft where the sleeve will be
of the crankshaft.
positioned with shellac or an equivalent sealant.
2. Coat the area of the shaft where the sleeve will be
positioned with shellac or an equivalent sealant.
Fig. 3. Use of Rear Oil Seal Sleeve on.
Fig. 4. Use of Front Oil Seal Sleeve on Grooved
Grooved Crankshaft
Crankshaft.
1972 General Motors Corp.
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