71 - 02 - 00
Page - 71-06
Reissued: August 1, 1986
2H21
CHART 7101. TROUBLESHOOTING (ENGINE) (CONT.)
High oil temperature (cont.) Low grade of oil. Replace with oil conforming
to specifications.
Clogged oil lines or screens. Remove and clean oil
screens.
Failing or failed bearing. Examine sump for metal
particles. If found, overhaul
of engine is indicated.
Defective thermostats. Replace.
Defective temperature Replace gauge.
gauge.
Excessive blow-by. Usually caused by weak or
stuck rings. Overhaul.
Improper engine operation. Check entire engine.
Excessive oil consumption. Failing or failed bearing. Check sump for metal parti
cles and, if found, overhaul
of engine is indicated.
Worn or broken piston Install new rings.
rings.
Incorrect installation of Install new rings.
piston rings.
External oil leakage. Check engine carefully for
leaking gaskets, O-rings or
sand holes.
Leakage through engine Replace fuel pump O-ring.
fuel pump vent. Engine
breather or vacuum pump
breather.
Check engine and overhaul
or replace pump.
Trouble Cause Remedy
PIPER AIRCRAFT
PA-28-236
MAINTENANCE MANUAL
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