TM 5-4320-302-14
6-19. CRANKSHAFT (CONT)
Location/Item
Action
Remarks
9.
Radial
The radial clearance (difference between above
clearance
measurements) for new camshaft bearing should
be 0.0014 to 0.0045 inch (0.035 to 0.114 mm)
or for worn parts a maximum of 0.0079 inch
(0.200 mm). Replace bearing journal or bearing
as needed to restore tolerance.
10. Rear camshaft
Knock out dished plug and discard. Measure
bore in crank-
rear camshaft bore in crankcase. Record
case and
measurement.
dished plug
11. Rear journal
Measure diameter of journal. Record measurement.
on camshaft
12. Radial clear-
Under normal conditions, the radial clearance
ance and
(difference between above measurements)
dished plug
should be 0.0016 to 0.0037 inch (0.040 to
0.094 mm). If clearance is greater than 0.0079
inch (0.200 mm), the camshaft and/or crank-
case must be replaced. If camshaft rear journal
diameter is within its specified limits, replace
the crankcase in accordance with paragraph
6-20. If camshaft rear journal is worn and out-
side its specified limits, replace the camshaft.
Measure bore, journal, and radial clearance
6-161
