INSPECTION, TESTING, AND REPAIR - TM-9-2330-329-14-P0628

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TM-9-2330-329-14-P Semitrailer Fuel Tanker: 5000-Gallon Bulkhaul Self-Load/Unload M967A2 (NSN 2330-01-495-0040) Manual

ASSEMBLY

TM 9-2330-329-14&P

ALTERNATOR MAINTENANCE--Continued

0145 00

INSPECTION, TESTING, AND REPAIR

WARNING

Solvents can burn easily, can give off harmful vapors, and

are harmful to skin and clothing. To avoid injury or death,

keep away from open fire and use in a well-ventilated area.

If solvent gets on skin or clothing, wash immediately with

soap and water.

CAUTION

Do not use excessive air pressure or parts could be damaged.

NOTE

All parts to be reused should be cleaned in cleaning compound

and air-dried.

Regulator. Check regulator for any signs of corrosion or burns in circuit board. If either is present,

replace regulator.

Brush Assembly. Replace brushes and brush holder.

Stator. Check for signs of physical damage, such as evidence of rotor striking stator laminations,

broken insulation, or presence of foreign material that would restrict cooling of stator. If damage is

present, replace alternator.

Check stator windings with a multimeter. Place one test lead on stator lamination and other on

each of stator connectors. Multimeter should show no continuity. If continuity is present, replace

Place test leads alternately between three connectors. Continuity should be present between

connectors. If continuity is not present, replace alternator.

Rectifier Heat Sink Diodes. If excess physical damage is evident, replace alternator.

Connect positive lead of multimeter to positive heat sink and touch negative test lead to each of

three diode terminals. High resistance should be indicated. If any or all diodes indicate low or no

resistance, replace alternator.

Reverse multimeter leads so that negative test lead is connected to positive heat sink. Touch

positive test lead to each of three diode terminals. Low resistance should be indicated. If any or all

diodes show high resistance, replace alternator.

Connect negative test lead of multimeter to negative heat sink and touch positive test lead to each

of three diode terminals. High resistance should be indicated. If any or all diodes show high

resistance, replace alternator.

Reverse multimeter leads so that positive test lead is connected to negative heat sink. Touch

negative lead to each of three diode terminals. A low or absent resistance reading should be

obtained.

If a shorted open diode is detected in any test, replace alternator.

0145 00-5