Engine Maintenance Instructions.

4-1

Engine Maintenance Instructions.

4-2

Engine Accessories

4-3 General.

The engine accessories consist of the ignition magneto,

electrical engine starter, generator and generator regulator.

The magneto is a flange -mounted type. A permanent

4-4

Magneto.

magnet, mounted on the rotor shaft produces a high voltage current

as its field passes through a fixed coil.

The current produced is

fed to the spark plugs at the proper instant by a distributor.

4-5 Electrical Engine Starter. The electrical engine starter is

a 12-volt, 4 brush, bendix-drive type.

The starter converts

electrical energy from the battery into mechanical power and trans-

mits this power to the engine flywheel for electrical starting.

Cleaning and Inspection

Clean the external surfaces of the starter with a cloth

(1)

dampened in an approved cleaning solvent and dry throughly.

Clean corrosion from the electrical terminal of the starter.

Inspect the terminal of the starter for corrosion and

(2)

damaged threads.

Remove the brush access cover and inspect the starter

(3)

Inspect the brushes for oil soaked

internally for damage.

condition and excessive wear. If the brushes are less than

half their original length replace the brushes. Refer a

defective starter to depot maintenance for overhaul.

4-6

Generator.

The engine accessory generator is a 12-volt shunt

wound, 2 brush, belt-driven, direct-current generator used to supply

current for charging the 12-volt battery of the test stand.