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 TM 55-1905-220-14-10
5-19.1. CAMSHAFT ASSEMBLY AND GEAR TRAIN - MAINTENANCE INSTRUCTIONS (Continued).
LOCATION
ITEM
ACTION
REMARKS
INSPECTION (Cont)
h. The clearance between the camshaft end journals and
the camshaft end bearing bushings is .0025" to .004" or
a maximum of .006" with used parts. Undersize and
oversize camshaft end bearings are avail- able for
service.
i.
Inspect the oil seal in the left bank camshaft front end
bearing for wear or damage. Replace the seal if
necessary. Also, examine the spacer used at the front
end of each camshaft. The outside diameter of the
spacer used in the left bank front end bearing must
provide a smooth oil seal contact surface. The outside
diameter is not ground and polished on the original
spacer used on the right bank camshaft in current
engines. Only the polished spacer is available for
service and may be used in either position.
j.
Replace excessively scored or worn camshaft
intermediate bearings. The clearance between the
camshaft journals and the intermediate bearings is
.0025" to .005" with new parts, or a maximum of .009"
with worn parts. Undersize and oversize camshaft
intermediate bearings are avail- able for service. Also,
examine the intermediate bearing lock screws and the
tapped holes in the cylinder block for damaged threads.
k. Examine the teeth on the water pump drive gear and the
camshaft gears for scoring, pitting or wear. Replace the
gears if necessary. Also, examine the keyways and
tapped holes in the gears and the camshaft pulley for
damage.
5-333
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