TM 5-3825-229-14&P
4-11. CONTROL PANEL GAUGES (cont)
b. Testing Ammeter:
(1)
With engine running and tank water pump and all lights on, read amperage on rear control
panel ammeter.
(2)
Stop engine.
(3)
Unscrew two screws (1) on right side of rear panel (2). Open panel (2).
(4)
Tag and remove wires (3) from ammeter terminals (4).
(5)
Connect wires (2) to calibrated, reference 100 - 0 - 100 AMP ammeter (3).
CAUTION
To avoid damage to equipment, do not let ammeter wires touch frame or other ground.
(6)
Start engine and turn on tank water pump and all lights. Read amperage on reference
ammeter.
(7)
If control box ammeter reads significantly different amperage than reference ammeter, replace
control box ammeter.
NOTE
Do not use zero adjustment screw on front of meter to adjust for different amperage
reading. Zero adjustment screw is used only to set pointer to zero.
4-18
