TM 5-3895-379-23-2
FIELD MAINTENANCE
ELECTRICAL GENERAL MAINTENANCE INSTRUCTIONS
INITIAL SETUP:
Tools and Special Tools
References
Tool Kit, General Mechanic's: Automotive
TM 5-3895-379-10
(WP 0289, Table 1, Item 39)
Personnel Required
Construction Equipment Repairer 91L
MULTIMETER USAGE
1.
General. A multimeter is used to troubleshoot the electrical system of the roller. The multimeter ohms scale
is used to test for continuity, shorts, and resistance. The multimeter voltmeter scale is used to test voltage
levels at any point in the electrical system.
2.
Continuity Tests. Continuity tests are performed to check for breaks in a circuit (such as a fuse, switch, light
bulb connector, or electrical wiring).
NOTE
If readout will not zero properly, replace batteries and repeat zeroing procedure. If
readout will not zero after batteries have been replaced, notify your supervisor.
a.
Zero Multimeter.
(1)
Set multimeter to ON.
(2)
Select OHMS.
(3)
Select LOWEST VOLTAGE/OHMS scale.
(4)
Touch black and red probes together and check for a zero indication on digital readout.
CAUTION
Before performing a continuity test, always place battery disconnect switch in OFF
position (TM 5-3895-379-10) and disconnect circuit to be tested. Failure to follow this
caution may damage multimeter.
b.
Testing for Continuity.
(1)
Zero multimeter.
(2)
Connect black and red probes to both terminals of circuit being tested.
(3)
Observe readout and interpret results as follows:
(a)
If readout indicates any numeric value, circuit has continuity.
(b)
If readout does not indicate any numeric value, or value is over the limits of the meter, circuit
is open.
0280-1
03/15/2011Rel(1.8)root(maintwp)wpno(M00218)
