TM 5-4320-302-14
6-18.
CRANKSHAFT ASSEMBLY (CONT)
Location/Item
Action
Remarks
INSPECTION
5.
Crankshaft gear
a.
Inspect for cracking, excessive wear, cracked or
broken gear teeth, rust, corrosion, or other
damage. If gear is damaged or excessively
worn, replace it. Inspect dowel sleeve keyhole.
Make sure it has not been worn out of its square
shape or that dowel sleeve has not been broken
off in dowel sleeve keyhole. If keyhole is worn
and/or part of dowel sleeve is lodged in keyhole,
replace gear.
b.
Inspect hex bolts for excessive wear, stripped
threads, or other damage. If worn or damaged,
replace.
c.
Inspect dowel sleeve for excessive wear.
Replace if worn or damaged.
6.
Crankshaft
Visually inspect for overheating, cracking, excessive
journals and
wear, or other damage. Visually inspect for cracks
crankpins
which start at an oil hole and follow the journal or
crankpin surface at an angle of 45 degrees to the
axis. Inspect for cracks in critical fillet areas. Re-
place crankshaft if cracks are visible. Inspect for
minute cracks using MIL-1-6868 Magnetic Particle
Inspection. Replace crankshaft if any cracks are
found or if it has been overheated.
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