Piper COMANCHE PA-24-180 Service Manual page 435

Trouble
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PIPER COMANCHE SERVICE MANUAL
TABLE VIIB-U. TROUBLESHOOTING CHART
(ENGINE) (cont)
Low oil pressure.
Insufficenc oil.
Leak in mucion line or
pressure Line.
Dirty oil strners.
Air lock or dirt in relief
valve.
High oil temperature.
Relief valve out of
adjustmenc.
Defective presure gage.
Stoppage in scavenge
pump intake passge.
Failing or failed bearings.
Remedy
Fill tank with oil of reconi-
mended viscosit.
Check gaket between acces-
sory housing and crak-
cae.
Remove and clean oil
stroaers.
Remove and clean oil pressure
relief valve.
See "High Oil Temperature"
in 'Trouble" column.
Check valve.
Replace gage.
Check Line for obstructon.
Clean suction sainer.
Check sump for metal
particles.
High oil temperature. Insufficient oil cooling.
Insufficient oil supply.
Low grade of oil.
Clogged oil lines or
srainers.
Excessive blow-by.
Faling or failed beanngs.
Defective temperature
gage.
Check ar inlet nd ourlet for
deformation or obstruction
Fill external tank to proper
level with specified oil.
Replace with oil conforming
o specification.
Remove and clean oil
strainers.
Usually caused by worn or
sticking rings.
Examine sump for metal
paricles. If found, over-
haul of engine is indicated
Replace gage.
POWER PLANT
ISSUED: 8/18/72
2 65