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 TM 55-1905-220-14-7
3-171.3. CONNECTING ROD BEARINGS - MAINTENANCE INSTRUCTIONS (Cont).
LOCATION
ITEM
ACTION
REMARKS
REMOVAL (Cont)
NOTE
Do not remove another bearing cap or bearing shells.
INSPECTION
3
Bearing
Bearing failures may result from deterioration (acid
shells
formation), contamination of the oil, or loss of oil.
An analysis of the lubricating oil may be required
to determine if corrosive acid and sulphur are pre-
sent which cause acid etching, flaking and pitting.
Bearing seizure may be due to low or no oil.
a. Upper
1. Clean the bearings
If any of these
and
and inspect them for
defects are
lower
scoring, pitting,
present, the
shells
flaking, chipping,
bearings must
cracking, loss of
be discarded.
babbitt, or signs
However, bab-
of overheating.
bitt plated
bearings may
develop minute
3-2921
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