Piper PA-24 Comanche Service Manual page 350

PIPER COMANCHE SERVICE MANt'AL
J. Disconnect oil pressure line at engine. •
k. Disconnect cylinder head temperature wire from
:\0. 5
cylinder. Disconnect generator
kad~
generator. remove clamp .... ecuring wires to engine and draw them aft to the firewall.
m. Disconnect spark plug leads from top spark plug of each cylinder and draw them through the rear
baffle...
Check the engine for any attachments remaining to obstruct its removal,
Remove
the cotter pin. nut. washer. front rudder shock mount and sleeve from each moun.
Slide bolts out of attaching points and swing engine free. placing it on a suitable support.
ago
n. Disconnect manifold pressure line at the left rear baffle.
o. Remove fuel pump blast tube.
p.
Remme fuel line from engine driven fuel pump.
4.
Disconnect engine breather hose at engine accessory housing.
r. Disconnect magneto ..
P"
leads at magnetos.
s. Disconnect tachometer cable at engine accessory housing.
t. Disconnect oil temperature wire from accessory housing.
u.
Remme oil cooler lines.
\ Disconect
the governor control cable at the governor and
remove
clamps securing it to engine.
w. Disconnect starter lead at starter and remove clamps securing it to engine.
x. DIsconnect fuel pressure line from carburetor.
y. Remove carburetor inlet line from carburetor and fuel pump.
1.
Disconnect the throttle. mixture and carburetor heat controls from carburetor and cable
attachment bracket.
aa. Remove exhaust stacks from engine by removing attaching nuts and washers.
abo
Remove
bonding straps from engine at side of mount.
ac, To prevent damage to the tail when removing the weight of the engine from the airplane. attach a
stand to the tail skid.
ad. Attach a one-half ton (minimum) hoist to the lifting strap and
relieve
the tension on the engine
mounts.
ae.
af.
bolt.
7.'\-29. Installation of Engine
PA·24-2S0.
(Refer to Figure 7A-7.)
a. Attach a one-half ton (minimum) hoist to the engine lifting strap and lift engine.
b. Swing. engine into place. positioning the engine mounting lugs so they align with mount
attachment points.
C.
Insert a mounting bolt into the engine mount until its threaded end extends one or two threads
from the mount itself. Insert a shock mount between the engine mounting bracket and the mount. Slide the
mount bolt on through the mount and insert a mount spacer over the bolt and through the engine mounting
bracket.
d. Repeat the procedures in step "c" with the remaining three attaching points.
e. Install the front engi ne shock mounts on the bolts and over the forward end of the mount spacer:
check to see that the shock mounts are not binding. Install washers and a nut on each mounting bolt.
Tighten the nuts progressively. following a circular sequence and torque to 40 foot-pounds and safety.
f.
Connect starter cable to starter and clamp cable to left cylinder baffles and engine mount.
g. Attach generator leads to generator and clamp them to right cylinder baffles and engine mount.
h. Attach exhaust stacks to engine cylinders using gaskets. washer and nuts.
ISSl'ED: 8/18/72
zcrs
POWER PLAe