Piper APACHE PA-23-235 Service Manual page 596

PIPER AZTEC SERVICE MANUAL
r.
Disconnect the oil line leading to the compressor and the return line leading
from the compressor to the oil supply tank.
s. Disconnect the oil lines at the wastegate actuator.
t. To prevent damage to the tail when removing the weight of the engine, at-
tach a stand to the tail skid.
u. Attach a one-half ton(minimum) capacity hoist tothe engine lifting eye and
relieve the tension on the mount bolts.
v. Remove the cotter pin, nut, washer, front rubber mount and sleeve from
all four mount bolts.
w. Slide mount bolts out of attaching points and slowly swing engine free and
place on a suitable support being careful not to damage any attached parts.
x. Remove the rear rubber mounts.
8A-27. INSTALLATION OF ENGINE. Refer to Figure 8A-5 for proper arrangement of
the engine mount shock assemblies. The top shocks are assembled so the silver colored shocks
are aft and the gold colored shocks are forward. The lower shock mounts are installed
opposite of the top shock mounts.
a. Attach a one-half ton hoist to the lifting strap and lift the engine. The ex-
haust stacks, injector and accessories
may be installed.
b. Swing the engine into position with the nose slightly high and inward. Allow
the magnetos to clear the ring of the engine mount. Position the mounting lugs
of the engine so they align with the engine mount attaching 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 en-
gine 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.
NOTE
A heat shield is installed with the bottom outboard
shock mount. Adjust so as to give maximum protec-
tion against exhaust tube heat.
e. Install the front engine 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 self-locking nut on each mounting bolt. Tighten the nuts progres-
sively, following a circular sequence, and torque to 34 to 42 foot-pounds.
f. Connect the two wastegate actuator oil lines.
g. Connect the compressor oil line and the oil return line from the compressor
to the oil supply tank.
POWER PLANT
Reissued: 2/18/81
3E13