Piper Comanche PA-24 Service Manual page 560

PIPER COMANCHE SERVICE MANUAL
Trouble
Excessive oil consumption.
Cold weather difficulties.
TABLE VlIB-U. TllOUBLESHOOTJNG CHAJlT
(ENGINE)
(COIle)
CallIe
Luw pcIe of oil.
F
ailins
or failed bCarinp.
Worn piston
rinp.
Incorrect insallation of
piston
rinp.
Cold oil.
Inaccurate pressure
readings.
Ovcrpriming.
Weak batt.ry.
Faulty ignition swirch.
2
G6
RaMdy
Fill tank with oil confonnins
10
specification.
Check sump for
mew
pam'-
cI ... If fOl1nd, overhaul
of CIIpe
II
indicated.
Iasull
DCW • •
IDRIlI new """.
1010 ... aircraft inro a h .... d
hlllfU. Heat oil.
In .xtmne cold weather, oal
pressure readings up ro
approairnardy 100 lbs. Docs
Not necessarily mean
malfuncQODing.
Route crankshaft ill dircc:rion
of
Dermal
roUtiOD with
throttle "full open", and
mixture
in
uidle-cut~fr'
and ignition switch "OFF·'
Insull fully charged batte<1-'
Check ground wires.
POWER PLANT
ISSUED: 8/18172