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TM 9-2330-329-14&P
ALTERNATOR MAINTENANCE--Continued
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Fan and Pulley. Check fan for bent fins and excessive wear around center bore. Check pulley for
5.
worn drive surfaces in belt area, or wear around bore. If damage is present, replace alternator.
Rotor Assembly. Check rotor assembly for signs of wear or damaged threads on shaft. If rotor is
6.
damaged, replace alternator. If rotor is not damaged, test rotor as follows:
Place multimeter leads on rotor shaft and either slip ring. There should be no continuity. If continuity
is present, replace alternator.
Place multimeter leads on two slip rings. The resistance should measure 2.4 to 3.5 ohms. If not,
replace alternator.
Front and Rear Housing. Inspect front and rear housing for wear and damage. If excess damage
7.
is present, discard alternator.
Bearings. Bearings should be replaced whenever the alternator is disassembled.
8.
ASSEMBLY
1.
Install new front bearing (33) in front housing (19).
2.
Install front bearing retainer (30), three new lockwashers (32), and screws (31).
3.
Install front housing (19) to rotor shaft (17).
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