PIPER
COMANCHE
SERVICE
MANUAL
7 A-30. Removal
Of
Enpne.
(PA-H-260.
Serial Nos. 2404000
'0
244782
incl.
""d
244784
to
244803
incl.l (Refer
to
Figu~
7,1.-8.)
•.
Tum
off
>.II
cockpit switch
..
and
disconnect the battery ground cable
..
the battery.
b.
Move
the fuel contrOl
lever
located on the
fuse.
floor between the
two
front
seats to the
OFF
posinon.
c.
Remove
-"line
cowling.
(Refer
to paragraph 7A-S.)
d. Drain e!lline oil if desired.
c. Remove propeller. (Refer
to
parqroph
7
A-iS)
NOTE
Where I question may
a.rise
IS
where to reconnect hose, line
or
wire. the
item
..
the
sepantion
should be identified
(...,ed)
to facwtate
reinsa.l.l.ation. Open
fuel. oil. vacuum
lin..
and fittings should be
covered
to
prevent contamination.
f.
Disconnect vacuum hose from va.cuum pump.
g. Disconnect eriline breather.
h.
Disconnect oil temperature lead and tachometer dnve cable from
the
ensmc a.ccessory housing.
I.
Disconnect
"'""'"to
"P"
leads and retard lead (left
","",ceo
only) from
mqnetos.
J.
DiKOnncct cabin heat and defroster
Ur
ductS from left muffler shroud.
Ir..
Disconnect fuel pump blase rube.
I.
Disconnect the manifold
pressu~
line. No 6 cylinder.
m. Disconnect fuel pump drain hose from pump.
n.
Disconnect fuel pump inlet and audec lines.
o. Remove
ou
cooler lines.
p.
Disconnect ema.ust
ga.s
temperature probe from
No.6
cylinder
e~aust
stack.
q.
Disconnect
staner
cable from starter.
r.
Disconnect
throtdc.
mixture
and
governor
~nU'ol
cables and remove cable clamps.
s. DiKonnect oil pressure and fuel pressure lines.
t. Disconnect
elecmcal leads from alternator. remove clamps securUtg wires to engine and draw
them
a.ft
to the firewa.ll.
u. DlKonnect
cylinder
head temperature lead from
No.5
cylinder.
v.
DlKonncct
bondm,
saaps
from engine at sides of mount.
w. Disconnect
tOP
.park plug
Iuds
and pull thern aft through the rear cngme baffles.
x.
Disconnect exhaust
suck
hangen
from
nOK
gear support tubes.
y.
To prevent damage to the tail when removing the weight
of
the engme from the aLrplane. a.ttach a
stand to the tail skid.
z.
Attach
a.
one-half ton (minimum)
nOlst
to the liftIng sttap and relieve the tension on the engine
mauna.
bolt.
aa. Check the engine for any
anachments
remaining to obstrUct
itS
removal.
bb. Remove the
cotter
pm. nut. washer, front rudder shock
mount
and sleeve from each mounting
~c.
Slide bolts
our
of a.ttaching points and swmg engine free.
placl11g
it on a
SUitabLe
suppOrt.
2
C23
POWER
PLANT
ISSUED:
8/18172
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