TM 5-4320-302-14
6-18. CRANKSHAFT ASSEMBLY (CONT)
Location/Item
Action
Remarks
REPAIR
14. Crankshaft
Inspect crankshaft drive end (to flywheel) con-
drive end
tact surface. Lightly stone crankshaft drive end
contact
contact surface with MIL-S-17243 surfacing
surface
stone to remove any fretting or brinnelling.
Remove dirt and debris from contact surface.
WARNING
Severe burns, illness, or death may result if personnel fail to
handle diesel fuel oil properly. Observe the following
precautions:
·
Do not inhale vapor.
·
Work in a well-ventilated area.
·
Do not use near open flame, sparks, or excessive heat.
15. Crankshaft
If crankpins and/or bearing journals are only
crankpins
slightly outside specified limits because of
and bearing
nicks, burrs, or high spots, remove these slight
journals
imperfections with P-C-458 crocus cloth wet
with VV-F-800 diesel fuel oil. Work wet crocus
cloth evenly around circumference of crankpin
or journal until surface is polished smooth. If
wet crocus cloth is not effective, use P-C-1673
emery cloth, 120 grit for removing imperfec-
tions and 240 grit for finishing. Polish smooth
with wet crocus cloth. Use of a piece of raw-
hide 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. If the above procedure is
not effective or imperfections are too great,
the crankshaft must be replaced and crankpins
and/or bearing journals must be ground. Pro-
cedures for regrinding are not included in this
technical manual. Send the crankshaft to depot
maintenance for grinding.
6-150
