Piper Dakota Maintenance Manual page 465

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