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Page Title:
Fluctuating engine oil pressure. |
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 TM 1-1510-223-MTF
e.
Defective pressure relief valve.
E9.
Fluctuating engine oil pressure.
a.
Insufficient or excess oil.
b.
Defective oil pressure indicating system
c.
Dirty oil filter.
d.
Defective pressure relief valve.
E10.
High oil temperature.
a.
Insufficient oil supply.
b.
Defective oil temperature indicating system.
c.
Excessive idling in feather.
d.
Restriction in oil cooler.
e.
Cooling air flow blocked.
E11.
Oil leak from compressor inlet.
a.
Defective preformed packing and plastic ring on oil filter
housing.
b.
Defective preformed packings on accessory gearbox.
E12.
Excessive oil discharge from overboard breather.
a.
Excess oil in tank.
b.
Defective preformed packing and plastic ring on oil filter.
c.
Excessive back pressure in scavenge system due to
restrictions in oil scavenge tubes, pump screen or oil-to-
fuel heater tubes.
E13.
Excessive engine oil consumption.
a.
Excess oil in tank.
b.
Leak or restriction in pressure scavenge oil tubes.
c.
Defective preformed packing and plastic ring on oil filter
housing.
d.
Leakage in oil to fuel heat exchanger.
e.
Defective centrifugal breather carbon seal.
3-17
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