Cessna 177 SERIES Service Manual

armature
turns the reduction
gear, the Bendix
drive
pinion meshes with
the crankshaft ring gear assembly
iCAUTION_
by inertia and action of the screw threads within the
Bendix sleeve. A detent pin engages in a notch in the Never operate the starter motor more than
screw
threads which prevents demeshing if the engine
12 seconds at a time. Allow starter
motor
fails to start when the starting circuit is de-energized. to cool between cranking periods to avoid
When the engine reaches a predetermined speed, cen- overheating. Longer cranking periods with-
trifugal action forces the detent pin out of the notch in out cooling time will shorten the life of the
the screw shaft and allows the pinion to demesh from starter motor.
the ring gear.
11-75. TROUBLE SHOOTING.
TROUBLE PROBABLE CAUSE REMEDY
STARTER WILL NOT
OPERATE. Defective master switch or
Check continuity of master
circuit. switch and circuit.
Install
new switch
or wires.
Defective starter switch or Check continuity of switch
switch circuit. and circuit.
Install new switch or wires.
Defective
starter motor.
Check voltage to starter.
If voltage is present.
Remove, repair or install
new starter motor.
STARTER
MOTOR RUNS,
BUT Defective
Bendix drive.
Remove starter
and inspect
DOES NOT TURN CRANK-
Bendix drive.
SHAFT.
Replace
defective parts.
Damaged starter pinion Inspect starter pinion gear
gear or ring gear. and ring gear. Replace
defective parts.
STARTER MOTOR DRAGS. Low battery. Check battery.
Charge or install new battery.
Starter switch or relay contacts Install serviceable unit.
burned or dirty.
Defective starter motor Inspect cable.
power
cable.
Install new
cable.
Loose or dirty connections.
Inspect
connections.
Remove, clean and tighten all
terminal connections.
Defective
starter motor.
Check starter motor
brushes,
brush spring tension, thrown
solder on brush cover. Repair
or install
new starter
motor.
Dirty or worn commutator.
Inspect commutator.
Clean and turn commutator.
STARTER EXCESSIVELY Worn
starter pinion gear or Inspect starter
pinion gear and
NOISY.
broken teeth
on ring gear. ring gear. Replace
defective
parts.
Change 2 11-29

Cessna 177 SERIES Specifications

General

Manufacturer	Cessna
Engine Type	Piston
Wingspan	35 ft 6 in (10.82 m)
Seating Capacity	4
Number Built	4, 295
Engine	Lycoming O-360
Horsepower	180 hp
Maximum Takeoff Weight	2, 500 lb (1, 134 kg)