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TM 55-1905-219-14-10
5-19.1. CAMSHAFT ASSEMBLY AND GEAR TRAIN - MAINTENANCE INSTRUCTIONS.
(Continued).
LOCATION
ITEM
ACTION
REMARKS
INSPECTION (Cont)
b. Inspect the cams and journals for
wear or scoring. If the cams are
scored, inspect the cam followers.
Also, inspect the camshaft keyways
and threads for damage.
c.
Runout at the center bearing, when
mounted on end bearing surfaces,
should not exceed .002" maximum.
d. Examine both faces of each camshaft
rear end bearing and thrust washer.
Also, examine the surfaces of each
camshaft and camshaft gear which
contact the thrust washers.
Replace excessively worn or scored
parts. Camshaft or camshaft gear
thrust surfaces that are not
scratched too severely may be
smoothed down with an oil stone.
NOTE
If a new camshaft is to be installed, steam clean it to remove the rust preventive
and blow out the oil passages with compressed air.
e. New standard size thrust washers
are .120" to .122" thick. The
clearance between the thrust washer
and the thrust shoulder of the
camshaft is .004" to .012" with new
parts, or a maximum of .018" with
used parts. Excessive clearance
may be reduced by using thrust
washers which are .005" or .010"
oversize.
5-331


 


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