TM-9-2330-356-14

SEMITRAILER, TANK: 5000 GALLON, BULK HAUL, SELF LOAD/UNLOAD M967 AND M967A1; SEMITRAILER, TANK: 5000 GALLON, FUEL DISPENSING, AUTOMOTIVE M969 AND M969A1; SEMITRAILER, TANK: 5000 GALLON, FUEL DISPENSING, UNDER/OVERWING AIRCRAFT M970 AND M970A1

TECHNICAL MANUAL; OPERATOR’S, UNIT, DIRECT SUPPORT, AND GENERAL SUPPORT MAINTENANCE MANUAL

OCTOBER 1990

TM-9-2330-356-14 - Page 170 of 528

TM 9-2330-356-14

4-11.

Using the DC Volts Scale

Use the DC volts scale to measure all voltages; the AC

volts scale is never used on these semitrailers.

a.

Setting up the Meter.

Before reading the meter, set

it up using the procedure below that matches the

multimeter in your shop set.

CAUTION

If you are not sure of the voltage you will be

measuring, ALWAYS select the 50V range

(100V range on the AN/URM-105).

(1) AN/URM-105. Set the meter switch to the

DC volts range set forth in the testing paragraph for the

component or circuit you are testing. (For most circuits on

the semitrailer, the right range is the one marked 100 DC

Volts) (fig. 4-11).

TA099767

Figure 4-11. Using AN/URM-105

to Measure

DC Volts.

(2) TS-352 B/U (Fig. 4-12).

(a)

Set the FUNCTION switch to DIRECT.

(b)

Put the black lead in the DC+/-AC/

OHMS jack.

NOTE

If measuring less than 10V DC, use the 10V

jack. If measuring less than 2.5V DC, use the

2.5V jack.

(c)

To measure 12V DC, plug the red lead

into the 50V jack on the left side of the meter.

Figure 4-12.

TA099768

Using TS-352 B/U to Measure

DC Volts.

(3)

Simpson 160 (Fig. 4-13).

NOTE

If measuring less than 10V DC, set switch to

the V/DC 10 position. If measuring less than

2.5V DC, set switch to the V/DC 2.5 position.

(a)

Set the polarity reversing switch to the

+ DC position.

TA099769

Figure 4-13. Using the Simpson 160 to Measure

DC Volts.

4-34