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
