MAC TOOLS MW250 Instruções de Operação descarregar pdf (Página 135)

100

101

TM 5-4310-452-14

4-36. ALTERNATOR REPLACEMENT (Con't).

VOLTAGE REGULATOR TEST (OPEN)

1. Check for 27.5-29 volts at voltage regulator terminal

(3) and positive output terminal (5).

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

terminal (3) and field diode (4).

3. Depress SAFETY CIRCUIT BYPASS button (1) on

control panel (2) and check voltage at voltage

regulator terminal (3).

4. If 1.5-4 volts are present, voltage regulator is "open"

and defective. Replace voltage regulator (see

paragraph 4-38).

5. If no voltage is present, an open field circuit exists,

indicating a defective alternator. Replace alternator.

TA505462

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MAC TOOLS MW250 Instruções de Operação Página 135

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