Piper Cherokee Six - Page 587

PIPER
CHEROKEE
SIX
SERVICE
MANUAL
/
//
'THRUST
WASHER
PKG.
Figure 10-27.
Exploded
View
of Gear
Reduction
Starting
Motor
ings begins
to
turn the
armature.
The gear
cut onthedrive
end of the armatureshaft
extends
through
thegear
housing,
where it is
supported by a roller
bearing. The
gear mates with
the teeth
of the reduction
gear that
drives the bendix
shaft. The shaft
is keyed to the
re-
duction
gear. The Bendix
drive is held
in position on the
shaft by a "spirol"
pin.
The shaft is supported
in the gear housing by a closed end
roller bearing and in
the pinion housing by
a graphitized bronze
bearing.
When the armature turns the reduction gear, the Bendix drive pinion meshes
with the flywheel ring gear by inertia and action of the screw threads within the
Bendix sleeve. A
detent pin engages in a notch in
the screw threads which pre-
vents demeshing if the engine fails to start when the starting circuit is de-ener-
gized.
When the engine reaches a predetermined speed, centrifugal action forces
the
detent pin out of the notch in the screw
shaft and allows the pinion
to demesh
from the
flywheel.
ELECTRICAL SYSTEM
Issued: 8/17/72
3C11