Piper PA-24 Comanche Service Manual page 486

PIPER COMANCHE SERVICE MANUAL
TABU
vnc-a,
TROUBLESHOOTING QlART
(coat.)
(ENGlNE-1'11RJKJCHARGED)
Trollble
c:...
RuMdy
Oilleakiq Ollt of
Oil sump or intake
R.epair
or replace sump
tJIIine induction
valw pidc
Ieak.iDt
or
'111ft
pide.
drain. NOTE: cite intO induction
should be taken
sy_m.
to make
tuft
oil
is from
iDsidc
Failed Turboc:lwJer
Rcplace TurbochltJCf.
CJlIine iDlet drain.
beannp md
com-
NOTE: TbeTurbo-
not on the outside
preuor sal.
c:btrpr seal
will
from some other point
have to be in very
on engine.
poor
condition to
perlhitoiltopus
the compralOr im-
pe11cr seal.
Turbochaqu dnin
Reroute for clear flow
line misrouted or or remow obmuction
plua ed•
&om line.
Noisy Tllrboch&tfCt'
Dunapd bc:arinp. Replace unit.
rotatiftl usembly.
Rocaa. . unit rubbint
Replace unit. NOTE:
bollSinl u a rsalt
Allowable
wit
play is
of damapd bariap. .017 to .028 inch due
clistoned housinp.
1:0
semi-Oouin,
bear·
dirt accumulation on
inp.
Allowable shaft
impeller.
carbon
axial play is .004 to
build..,p on turbine
.009
inch.
or foman object
damap.
Oillaki,. out of
Badly worn
Of
failed
Replace turbocharger.
exhaust pipes.
turboch&tJCf shaft
oil seal.
Fouled oil prasure
Replace valve.
reducing valve in
turbo
oil supply.
hull:}' scaveftler pump
Replace pump or
remove obstNction
or restriction in
in system.
scaven.e system.
POWER PLANT
lSSUED: 8/18/72
2
110
•
•
•