C 2500 Truck 2WD V8-5.7L VIN R (1997)
Crankshaft Main Bearing Seal: Service and Repair
Seal Replacement
REMOVAL
1. Remove the transmission. Refer to Transmission and Drivetrain.
2. Remove the clutch and flywheel as equipped.
CAUTION: Remove the rear crankshaft oil seal carefully in order to avoid nicking the crankshaft sealing surface.
3. Remove the crankshaft rear oil seal. Insert a screwdriver into the notches provided in the seal retainer and pry the seal out.
4. Inspect the chamfer on crankshaft for grit, loose rust, and burrs. Correct as necessary.
5. Clean the seal running surface on the crankshaft with a non-abrasive cleaner.
INSTALLATION
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Tools Required
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J 35621 Rear Oil Seal Installer, or equivalent
1. Install the crankshaft rear oil seal using the following procedure:
a. Lubricate the inner and outer diameter of the seal with engine oils.
b. Install the oil seal on the J35621.
c. Position the J 35621 against the crankshaft. Thread the attaching screws into the tapped holes in the crankshaft.
d. Tighten the screws securely with a screwdriver. This will ensure that the seal is installed squarely over the crankshaft.
e. Turn the handle until it bottoms.
f.
Remove the J 35621.
2. Install the clutch and flywheel as equipped.
3. Install the transmission.
