805
805
0.015 MIN.
Figure
7A-35. Removing
Impulse
Coupling
Figure
7A-36. Checking
Flyweight
to
Stop Pin
Clearance
7A-41. IMPULSE COUPLING REMOVAL.
a. Using
heavy gloves
or shop cloth, grasp
the coupling body
firmly to prevent
the
internal spring
from unwinding suddenly. Pull outward
on the coupling body only enough
to release it
from the cam assembly. Keep the coupling
body close against the cam and allow
the body to
turn as the spring unwinds. After one
or two turns, the spring coils will wedge
against the
projections on the body, restraining
the spring from further unwinding.
b. Look into
the hole in body and note the location
of the inner eye of spring where
it
engages with
mating recess in cam
hub. Insert a screwdriver
under spring
end and pry spring
eye out of recess.
Remove the body
and spring together.
Uncoil spring
from body and pry
spring
eye from body recess
to disengage spring.
c. Thread protective cap of 11-702-1
puller securely on end of shaft.
Engage puller
over protective
cap and cam assembly with wide jaws
of puller hooked under cam assembly
as shown in Figure 7A-35.
d. Tighten puller handle to remove
coupling from shaft. If coupling
does not release
with maximum
hand torque at puller handle, apply
penetrating thread release compound
between
coupling and shaft.
Then while puller
is still fully tightened,
hold tip of hot
heavy
duty soldering iron in contact with hub of coupling cam assembly. Solder wetting of the tip
at point of contact
with the cam
hub will assist
in heat transfer to
the parts. Retighten
puller after about
a minute of heat
application.
CAUTION
Do not strike the puller
with a hammer. If puller
is struck
with a hammer the main bearings must be replaced.
POWER
PLANT
Added:
7/28/75
PIPER CHEROKEE SIX SERVICE MANUAL
2H21
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