PIPER
CHEROKEE
SIX
SERVICE
MANUAL
"blade-shake" travel, making small
marks with a pencil at each position.
Then center the tip
between these marks
and scribe a line on the board
for the full width of the tip.
b. Carefully
rotate propeller by hand to bring
the opposite blade down. Center the
tip
and scribe a pencil line as before and check that lines are not separated more than .0625
inch.
c. Propellers having excess
blade track should be removed
and inspected for bent
blades, or for parts of sheared
"O" ring, or foreign particles, which
have lodged between hub
and crankshaft
mounting faces.
Bent blades will require
repair and overhaul
of assembly.
7A-8. PROPELLER GOVERNOR.
7A-9. REMOVAL OF PROPELLER GOVERNOR.
a.
Remove the
upper engine cowl.
b.
Disconnect the control cable
end from the governor control
arm.
c. Remove the governor
mounting stud nuts. It will be necessary
to raise the governor
as the nuts are being removed before the nuts can be completely removed.
d. Remove the mounting
gasket. If the governor is to be removed
for a considerable
length of time and another unit not substituted, it is advisable to cover the mounting pad to
prevent damage caused by foreign matter.
7A-10. INSTALLATION OF PROPELLER GOVERNOR.
a. Clean the mounting
pad thoroughly,
making very
certain that there
are no foreign
particles in the recess around the drive shaft.
b. Place the governor
mounting gasket
in position with
the raised portion
of the screen
facing away
from the engine.
c. Align the splines on the governor
shaft with the engine drive and
slide the governor
into position.
d. With the governor in position, raise the governor enough to install washers and start
mounting nuts. Torque nuts even.
e. Connect the control cable end to the governor control arm. The ball stud is installed
in the inner
hole of the
control arm.
f. Adjust governor control per paragraph 7A-11.
g. Install
engine
cowl.
7A-11. RIGGING AND ADJUSTMENT OF PROPELLER GOVERNOR. (Refer to Figure
7A-3.)
a. Start engine, park 90 to wind direction and warm in normal manner.
b. To check high RPM, low pitch setting, move the propeller control all the way
forward. At this position the governor
speed control arm (1) should be against
the high RPM
fine adjusting screw (2). With the throttle full forward, observe engine RPM, which should
be 2700 RPM with high RPM properly adjusted.
c. Should engine RPM not be as required, the high-RPM setting should be adjusted as
follows:
1. Shut down the engine and remove the upper engine cowl.
POWER PLANT
Issued: 8/17/72
2G10
To Next Page
Loading...
