TM-9-2330-330-14-P

SEMITRAILER, FUEL TANKER: 5000-GALLON, FUEL-DISPENSING, AUTOMOTIVE, M969A3

TECHNICAL MANUAL; OPERATOR’S, ORGANIZATIONAL, DIRECT SUPPORT, AND GENERAL SUPPORT MAINTENANCE MANUAL (INCLUDING REPAIR PARTS AND SPECIAL TOOLS LIST)

NOVEMBER 2005

TM-9-2330-330-14-P - Page 720 of 1116

TM 9-2330-330-14&P

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ALTERNATOR MAINTENANCE—Continued

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5.

Fan and Pulley

. Check fan for bent fins and excessive wear around center bore. Check pulley for

worn drive surfaces in belt area, or wear around bore. If damage is present, replace alternator.

6.

Rotor Assembly

. Check rotor assembly for signs of wear or damaged threads on shaft. If rotor is

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.

7.

Front and Rear Housing

. Inspect front and rear housing for wear and damage. If excess damage

is present, discard alternator.

8.

Bearings

. Bearings should be replaced whenever the alternator is disassembled.

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).