PIPER COMANCHE SERVICE
MANUAL
c. Connect the conttol cable end
to
the governor control arm.
f. Adjust governor per p
....
graph 78-15.
g.
Fasten
the
cowling on both sides.
78-15.
Adjustment
Of
PropeU
..
Governor. (Ref
..
to
Figure 78-3.)
a.
Stan
the engine in accordance with the dircc[jons given in the Owner's Flight
~anua1
and
a!1ow
to
wumup.
b. Push the "PROPELLER" cockpit control
as
far forward as it will go. At this position the governor
speed adjusting control lever will be against the
hi-<pm
fine adjusting screw.
c.
Observe enginc speed. Adjust the governor by means
of
the fine adjustment screw for 2650 rpm.
To
do
this. release the fasteners and lift the side cngine cowling. Loosen the finc adjustment screw locknut
and turn the hi-f'pm fine adjustment screw
in
a clockwise direction
to
decrease engine speed and a
counterclockwise rotation
to
increase cngine speed. One revolution
of
the fine adjustment screw increases
or
decr
....
s the propener speed approximately IS RPM.
d.
After setting the engine rr
at
2650, run the self-locking nut on
the
fine adjustment screw against
the base projection
to
lock.
e. Pull the
"PROPELLER" cockpit control
aft
to
the low
RPM
position.
f. Observe engine speed. Set to 1550 rpm either by threading the fitting at the governor control arm
onto
the cable, or by turning it in the direction tending
to
remove
the
fitting from the cable, depending on
whether it
is
required
to
decrease or increase engine speed, respectively.
It
will be necessary,
of
course, prior
to
adjusting,
to
remove the self-locking nut and disconnect it from the governor control arm and
to
release
the fitting locknut.
g.
Reconnect cable
to
governor control arm, tighten fitting locknut, and recheck engine by moving
cockpit control in and
out
of
the
appropriate settings.
h.
Fasten the cowling on both sides
78-16. Removal
Of
Engine.
78-17. Installation
of
Engine.
NOTE
Refer
to
latest Lycoming Service Instruction No. 1241.
78-18 Engine Shock Mounts. Replacement of engine shock mounts. Refer to Figure 78-4 for the proper
arrangement
of
engine shock mount assemblies The top shocks arc assembled
50
the silver colored 'shock
is
aft and the gold colored shock
is
forward. The lower shock mounts arc installed opposite
of
the
tOP
shock
mounts Torque shock mount bolts to
450
to 50010.
Ibs
and safety.
REVISED:
4/10/81
POWER
PLANT
2F5
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