TM 5-3895-346-14
SHOP NOTES
ENGINE OVERHAUL
Figure 1. Using Plastic Strip to Measure Bearing-to-Crankshaft Clearance
3. Rotate the crankshaft about 30 from bottom dead center and reinstall the bearing cap. Tighten the
bolts to the specified torque.
4. Remove the bearing cap. The flattened plastic strip will be found adhering to either the bearing shell
or the crankshaft.
5. Compare the width of the flattened plastic strip at its widest point with the graduations on the envelope
(Fig. 1). The number within the graduation on the envelope indicates the bearing clearance in thousandths of
an inch. Taper may be indicated when one end of the flattened plastic strip is wider than the other. Measure
each end of the plastic; the difference between the readings is the approximate amount of taper.
CAMSHAFT CUP PLUG INSTALLATION
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
the camshaft rather than removing and replacing the drive plug.
NOTE
It is not necessary to remove the camshaft from the engine when installing the cup plug.
1. Clean the hole in the front end
of the camshaft and apply Permatex No.
Install the cup plug as follows:
1 sealant, or equivalent, to the outer diameter of the cup plug.
2. Install the plug to a depth of 0.180 to 0.210 inch with tool J 24094.
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