TM 5-2420-230-24-1
12-4. ALTERNATOR TESTING.
This Task Covers:
a. Testing
b. Follow-On Maintenance
INITIAL SETUP
Test Equipment
Equipment Conditions
None
TM or Para
Condition Description
Vehicle positioned on level
ground.
Tools and Special Tools
Multimeter, Item 28, Appendix B
Parking brake applied.
Tool kit, general mechanics, Item 38, Appendix B
Electrical master switch ON.
Engine ON.
Materials/Parts
None
Drawings Required
None
Personnel Required
MOS 62B, Construction Equipment Repairer
Estimated Time to Complete Task
Refer to MAC in Appendix B
References
FO-3, Electrical schematic
a. Testing.
Remove all jewelry such as rings, dog tags,
bracelets, etc. If jewelry or tools contact
positive electrical circuits, a direct short may
result. Damage to equipment and injury or
death to personnel may occur.
(1)
Set multimeter to read DC voltage.
(2)
Place positive lead of multimeter on voltage
output terminal (1) of alternator (2).
(3)
Place negative lead of multimeter on vehicle
ground (3).
(4)
The multimeter should display 24-27.5 Vdc.
(5)
Set multimeter to read amperage.
(6)
The multimeter should display a maximum
of 130 amperes.
b. Follow-On Maintenance.
Shut OFF engine (TM 5-2420-230-10).
END OF TASK
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