Cirrus SR22 Manuale utente
CIRRUS AIRPLANE MAINTENANCE MANUAL MODEL SR22
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EFFECTIVITY:
STARTING
1. GENERAL
This chapter describes the components used for starting the airplane engine. This includes the starter. For
additional information on starter system components, refer to the manufacturer’s approved Instructions For
Continued Airworthiness and/or other service instructions.
The starting system employs an electric starter motor mounted on a right angled starter-to-engine adapter.
The right angle drive adapter serves to shorten the engine’s overall length. As the starter motor is electri-
cally energized, the adapter worm shaft and gear engage the starter shaftgear by means of a spring and
clutch assembly. As the shaftgear rotates, it engages the crankshaft gear and crankshaft. When the engine
starts and accelerates, the gripping action of the clutch spring is relieved, disengaging the shaftgear from
the worm shaft and electric starter motor.
15 Apr 2007
80-00
Page 2 All
EFFECTIVITY:
CIRRUS AIRPLANE MAINTENANCE MANUAL MODEL SR22
15 Apr 2007
2. TROUBLESHOOTING
Trouble Probable Cause Remedy
Starter will not operate. Defective master switch or circuit. Check continuity of master switch
or circuit. Install new switch or
wires.
Defective starter switch, contactor,
or switch circuit.
Check continuity of switch, contac-
tor and circuit. Install new switch
or wires.
Defective starter motor power
cable.
Inspect cable. Install new cable.
Starter motor runs, but does not
turn crankshaft.
Damaged worm gear. Remove starter and inspect worm
gear. Replace defective parts.
Starter motor drags. Low battery. Check battery. Charge or install
new battery.
Starter switch or relay contacts
burned or dirty.
Install serviceable unit.
Defective starter motor power
cable.
Inspect cable. Install new cable.
Defective starter motor. Check starter motor brushes,
brush spring tension or thrown
solder on brush cover. Repair or
install new starter motor.
Dirty or worn commutator. Inspect commutator. Clean and
turn commutator.
Starter excessively noisy. Worn starter worm gear. Inspect starter worm gear.
Replace defective parts.
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