1.0 Specifications
DETROIT DIESEL 53
5.
the width of the flattened plastic strip at its
3.
Rotate the crankshaft about 30 from bottom
dead center and reinstall the bearing cap. Tighten the
widest point with the graduations on the envelope (Fig.
1.). The number within the graduation on the envelope
bolts to the specified torque.
indicates the bearing clearance in thousandths of an
inch. Taper may be indicated when one end of the
4.
Remove the bearing cap. The flattened plastic
flattened plastic strip is wider than the other. Measure
strip will be found adhering to either the bearing shell or
each end of the plastic; the difference between the
the crankshaft.
readings is the approximate amount of taper.
CAMSHAFT CUP PLUG INSTALLATION
Install the cup plug as follows:
When an oil leak occurs at the drive plug area in the
front end of the camshaft, install a cup plug in the end of
1.
Clean the hole in the front end of the camshaft
the camshaft rather than removing and replacing the
and apply Permatex No. 1 sealant, or equivalent, to the
drive plug.
outer diameter of the cup plug.
NOTE: It is not necessary to remove the
2.
Install the plug to a depth of .180" -210" with
camshaft from the engine when installing
tool J 24094.
the cup plug.
1972 General Motors Corp.
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