Piper COMANCHE PA-24-180 Service Manual page 362

PIPER COMANCHE SERVICE MANUAL
7A-32. Removal Of Engine. (PA-24-260, Senal Nos. 24-4783 and 24-404 and up) (Refer to Figure 7A-9 )
a. Turn off all cockpit switches and disconnect the battery ground cable at the bacerv
b.
Move the fuel control lever locared on the fuselage floor between the two front Merts to the OFF
position.
c. Remove engine cowling (Refer to paragraph 7A-8 )
d.
Drain engine oil if desired.
e. Remove propeller. (Refer to paragraph 7A-18 )
f. Remove air ducs from firewall and oil cooler.
NOTE
Where a question may arise as where to reconnect hose. line or wire, the
item at the separation should be identified (tagged) to facilitate
reinstailation. Open fuel. oil. vacuum lines and fitrings should be
covered to prevent contamination
g. Disconnect the manifold pressure line. No. 6 cylinder.
h. Disconnect magneto "P" leads and retard lead (left magneto only) from magneros.
i. Disconnect tachometer dnve cable and oil temperature lead from the engine accessory housing
j. Disconnect vacuum hoses at vacuum pump
k. Disconnect oil cooler hoses at aft end of engine.
1. Disconnect engine breather from engine
m. Disconnect exhaust gas temperature lead from No. 6 cylinder exhaust suck.
n. Disconnect fuel pump inlet line at fuel pump.
o. Disconnect fuel pressure. oil pressure and fuel flow lines.
p Disconnect cylinder head temperature lead from No 5 cylinder
q. Disconnect the starter cable at the starer, remove cable clamps at the left side of the engine and
engine mount, and draw cable aft to the firewall
r.
Disconnect alternator leads at alternator, remove clamps securing wires to engine and draw them
aft to the firewall.
$ Disconnect injector heat control cable at air duct.
t.
Disconnect throttle, mixture and propeller governor control cables and remove clamps secunng
them to engine.
u. Remove bonding straps from engine at sides of mount.
v. To prevent damage to the tail when removing the weight of the engine from the airplane. attach a
stand to the tail skid.
w Attach a one-half ton (mmimum) hoist to the lifting strap and relieve the tension on tne engine
mounts.
x. Check the engine for any attachments remaining to obstruct its removal.
v Remove the cotter pin. nut, wasner, front rudder shock mount and sleeve from each mounting
bolt.
z. Slide bolts out of attaching points and swing engine free. placing it on a suitable support.
POWER PLANT
ISSUED: 8/18/72
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