Piper Comanche PA-24 Service Manual page 616

Trouble
Oilleakinl out of
engine induction
drain. NOTE,
COR
should be takeD
to malte sun: oil
is from iDside
.,.me inlet drain.
not on the outside
PIPER COMANCHE SERVICE MANUAL
T.ABLE
vne-l!.
TROUBLESHOOTING OIAIlT
(CIIIK.)
(INGlNI-TU1UIOCHAIlGID)
Clue
Jlcmody
Oil SlImp or imake Repair or repw:e sump
YLIw
JUide
IcaItinJ
or YLIw JUide.
into induction
system.
Failed Turboc:harJcr
RepW:e Turbocharp-.
bearings aDd com- NOTE, ne Turbo-
prestOr seal.
c:lwscr
seal will
from some other point haw to be in
very
on engine.
Noisy TurbocItarJer
rorating uscrnbly.
Oillcalr.ing out of
exhaust pipes.
POWER PLANT
ISSUED: 8/18nZ
TurI>ocIwJer drain
line misrouted or
plugecl.
D..,...ecI bcsrinp.
RotatillJ unit rubbing
bousiDJ as • r .... lt
of
damaJcd
beari ....
distorted housillJs.
dirt Kcumulation on
impeUer. carbon
budd-up on turbIDe
or foreign object
da .....
Badly worn or failed
turboch"'"'et shut
oil seal.
Fouled oil pressure
reducing valve in
turbo oil supply.
Faulty Kavenger pump
or restriction Ln
scavenge sy'ncm.
2 110
poor
condition to
r
"lit oil to pass
the COmpteSlOf im-
peller
seal.
Reroute for clear now
or remove obSU'\lc:tion
&om liDe.
Repw:e UDit.
Repw:e unit. NOTE,
Allowable wit play is
.017 to .028 inch due
to scmi-noatiIIJ bear-
ings. Allowable shut
uiaI play
is
.004 to
.009 inch.
Replace turbochuwer.
Replace valve.
Replle. pump or
remove obsm.u:tion
In
system.