MAC TOOLS MW250 Instrucciones de operaciones descargar pdf (Pagina 134)

100

101

TM 5-4310-452-14

4-36. ALTERNATOR REPLACEMENT.

This Task Covers:

a. Test c. Installation

b. Removal

Initial Setup:

Equipment Conditions: Materials/Parts:

• Engine off, • One locknut

• Right door assembly open. • Six lockwashers

Tools/Test Equipment: General Safety Instructions:

• General mechanic's tool kit • Remove all jewelry.

• Multimeter

a. TEST

FIELD DIODE TEST (OPEN)

WARNING

Remove all jewelry when working on

alternator. Do not bridge alternator

studs with metal, Improper contact

may cause severe burns.

1. Depress SAFETY CIRCUIT BYPASS button (1) on

control panel (2).

2. Using multimeter, check for 27.5-29 volts at voltage

regulator terminal (3) and for 1.5-4 volts at positive

output terminal (5).

3. Install test jumper JU1 (6) between voltage regulator

terminal (3) and positive output terminal (5).

4. Using multimeter, check voltage at voltage regulator

terminal (3). If charging voltage is present, the field

diode (4) is "open" and defective. Replace

alternator.

4-72

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MAC TOOLS MW250 Instrucciones de operaciones Pagina 134

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