TM 5-4320-300-14
6-11. CRANKSHAFT AND FLYWHEEL (CONT))
Location/Item
Action
Remarks
INSPECTION OF
CRANKSHAFT
15. Keyway
Inspect for cracks or wear. Replace crankshaft,
if necessary.
16. Crankshaft
Inspect for signs of overheating. Replace crank-
shaft, if necessary.
17. Bearing
Inspect for ridges. Ridges exceeding 0.0002 inch
journals
(0.00508 mm) must be removed by working
P-C-458 crocus cloth, wet with VV-F-800 diesel
fuel, around circumference of crankshaft journal.
If ridges are greater than 0.0005 inch (0.0127 mm).
use P-C-1673 emery cloth, 120 grit for removing
ridge and 240 grit for finishing. Polish with wet
crocus cloth. If ridges are greater than 0.001 inch
(0.0254 mm) regrind crankshaft. Use of a piece
of rawhide or other suitable rope wrapped around
the emery cloth or crocus cloth and drawn back
and forth will minimize the possibility of an out-
of-round condition developing (keep the strands
of rawhide apart to avoid bind). If rawhide or
rope is not used, the crankshaft should be
rotated at intervals.
18. Oil seal
Inspect front and rear oil seal contact surfaces for
contact area
grooves or ridges. Remove slight ridges as explained
in step 17 above. If oil seal area cannot be cleaned
satisfactorily, press the oil seals into flywheel hous-
ing or front cover 1/8 inch (3.18 mm) from their
original positions, or install oil seal sleeves to give
the crankshaft replaceable contact surfaces.
19. Oil seal
Install oil seal sleeve on
sleeve on
rear (flywheel housing)
flywheel
contact surface as follows:
housing
surface
a. Stone high spots from
oil seal contact sur-
face of crankshaft.
b. Coat contact surface
with MI L-T-22361
thread compound.
c. Drive sleeve squarely
on the shaft.
d. Wipe off any excess
sealant.
e. Coat outside diameter of sleeve with MI L-L-2104 oil.
TM 5-4320-300-14
6-97
