TM 5-4320-302-14
6-18. CRANKSHAFT ASSEMBLY (CONT)
Location/Item
Action
Remarks
16. Crankpin and
All fillets must have a 0.1693 to 0.1772 inch
journals
(4.30 to 4.50 mm) radius between crank cheek
fillets
and crankpin or journal and must not have any
sharp grind marks. Fillet must blend smoothly
into crankpin or journal and crank cheek, and
must be free of scratches. Check radius with a
fillet gage and polish smooth any slight imper-
fections with P-C-458 crocus cloth wet with
VV-F-800 diesel fuel oil. If radius is too far out-
side specified limits, the crankshaft crankpins
and/or journals and crank cheeks must be re-
ground and the crankshaft replaced.
17. Crankpin and
Stone edges of all oil holes in crankpin and
bearing journal
journal surfaces with MIL-S-17243 surfacing
oil holes
stone to provide a smooth radius.
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.
18. Ground
Polish ground surfaces to an 8 to 12 RMS finish
surfaces
with P-C-458 crocus cloth wet with VV-F-800
diesel fuel oil.
19. Crankshaft
Inspect. If slightly worn or grooved, smooth
thrust
out and polish surfaces with wet crocus cloth.
surfaces
Make sure to leave a 0.1693 to 0.1772 inch
(4.30 to 4.50 mm) radius on
crankshaft between each
thrust surface and bear-
ing journal or crankpin.
6-151
