TM 9-2350-247-34
PREVENTIVE MAINTENANCE CHECKS AND SERVICES (PMCS), INCLUDING
LUBRICATION INSTRUCTIONS — Continued
0005 00
5)
Inspect all threaded parts for damaged or stripped threads.
c.
ROLLER AND BALL BEARINGS. Inspect bearing races for wear and color changes due to heat. See TM 9-214
for inspection procedures for ball bearings.
d.
NEEDLE ROLLER BEARINGS. Inspect bearings for free and smooth rotation, and broken or missing rollers.
Also look for tightness of fit in bearing bores. Inspect bearing races for wear and color changes due to heat. See
TM 9-214 for inspection procedures.
e.
STUDS. Inspect all studs for stripped or damaged threads, bent or loose condition, and signs of stretching.
f.
GEARS.
1)
Use magnetic particle inspection equipment to check all gears for cracks.
2)
Inspect gears for burrs, wear, cracked or broken teeth, and pitting at tooth contact areas.
g.
BUSHINGS AND BUSHING-TYPE BEARINGS.
1)
Check all bushings and bushing-type bearings for secure fit in casting. Check for color changes which could
mean overheating. Inspect for size, scoring, out-of-roundness, burrs, sharp edges, and signs of seizing.
2)
Check for dirt in oil holes and in bushing type bearings. Oil holes and grooves must be clean and not damaged.
h.
OIL SEALS.
1)
Inspect feather edge of oil seals for tears, fraying, hardening, and cracking.
2)
Replace metal covered oil seals when there are signs of damage or oil leakage.
i.
CORE HOLE PLUGS. Inspect core holes for signs of leakage. Replace damaged core hole plugs.
j.
INSERTS.
1)
Inspect inserts for cracks and stripped or damaged threads.
2)
Check inserts for loose fit.
3)
Inspect armor mounting inserts and hull screw holes for loose or missing plugs and setscrews, as required.
k.
GREASE SEALS, PREFORMED PACKING, AND GASKETS.
1)
Inspect seals that are composition type, rings, and preformed packing for wear, brittleness, cracks, cuts, and
damage.
2)
Inspect lip seals for cracks, wear, cuts, and brittleness. Inspect springs and seal shells for damage.
3)
Gaskets and seals on electrical parts may be reused. Inspect gaskets and seals for wear, nicks, cuts, and torn or
missing gasket material. Replace gasket, if needed.
l.
SPLINED PARTS. Inspect splined parts for burrs, wear, and twisted, cracked or broken splines.
m.
THREADED PARTS. Inspect all threaded parts for burrs, and stripped or damaged threads.
n.
RETAINING RINGS. Inspect retaining rings for nicks, burrs, defects, loss of tension, or wear.
o.
SPRINGS. Inspect springs for wear, defects, breaks, and loss of tension or compression. Inspect springs using a
spring tester.
p.
SHAFTS AND SPINDLES. Inspect shafts and spindles for excessive wear, binding, scores, cracks, burrs, and
obstructed oil passages.
q.
ELECTRICAL PARTS.
1)
Inspect electrical parts before you install them. Look for mildew, and corroded or burned parts.
0005 00-7
