Piper PA-24 Comanche Service Manual page 361

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PIPER
COMA~CHE
SERVICE
MA~t:AL
:A.:n. Installation
Of
Engine. (P:,\·24·2bO. Serial 'os. 24·471B and 244804 and up)(
Refer
to Figure
~-\-9.)
a. Attach a one-half ton (minimum) hoist to the engine lifting strap and lift engine.
h. 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 mount. Slide the
mount holt nn through the mount and insert a mount spacer over the bolt and through the engine
mounting bracket.
d. Repeat the procedure.. in step "c" with the remaining three attaching points.
e.
Install
the front engine shock mounts on the bolts and
over
the forward end of the mount
vpacer:
check to see that the shock mounts are not binding. Install washers and a nut on each mounting bolt. Tighten
the nuts prcgressively. 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 alternator leads to alternator and clamp them to right cylinder baffles and engine mount.
h. Connect governor control cable
to
governor and secure with clamps.
i.
Connect throttle and mixture control cables to the injector and adjustment per paragraph ;A-f, I .
.I.
Connect injector heat control cable and adjust.
k. Attach bonding straps to engine and engine mount.
I.
Connect cylinder head temperature 1:\0.
5
cylinder) and exhaust gas temperature ('0.
(-l
cylinder)
leads and secure.
m. Connect fuel pressure. fuel flow and oil pressure lines.
n. Connect fuel pump. inlet line.
o. Connect oil temperature lead and tachometer cable to engine accessory housing.
p.
Connect magneto ..
P'
leads and retard lead (Left magneto only) to magnetos.
4.
Connect manifold pressure line
1'0.
6 cylinder).
r. Connect oil cooler hoses
to
engine.
~,
Connect engine breather to engine and clamp.
t. Connect
vacuum
hoses to
vacuum
pump and clamp.
u.
Connect
ducts
to
muffler. cabin heat inlet and oil cooler and clamp.
\ Install propeller. (Refer to paragraph
7 A·20.)
w , Install the proper grade and amount of engine oil.
'OTE
Refer to latest Lycoming Service Bulletin Instruction
'0.
1241.
x. Install cowling,
(Refer to paragraph 7A-10.)
y. Connect battery ground cable. turn fuel selector valve on. open throttle full and turn on the
auxiliary fuel pump. Check for fuel leaks.
7 A-:q Engine Shock Mounts. Replacement of engine shock mounts. Refer to Figures 7A-7. 7
A·~
and
:;\-9 for the proper arrangement of engine shock mount assemblies. The top shocks are assembled so the
silver
colored shock is aft and the gold colored shock is forward. The lower shock mounts are installed
oppo-ite of the top shock mounts. On airplanes with Serial !\umbers 24-4783 and 244804 and up: place shock
mount" ith
P '\
J·JO~9·~5
in the top aft position and shock mount with
P
!\
J-3049-34
in the top front
position. Place
the
lower
shock mounts opposite the top mounts. Torque shock mount bolts to 450 to
SO() in. Ibs. and safety.
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REVISED: 4/10/81
2D5
POWER
PLA~T