TM-9-2320-273-34

TRUCK TRACTOR, LINE HAUL; LIGHT EQUIPMENT TRANSPORTER; TRUCK CHASSIS; MEDIUM EQUIPMENT TRANSPORTER

TECHNICAL MANUAL; DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE

DECEMBER 1980

TM-9-2320-273-34 - Page 146 of 801

TM 9-2320-273-34

TA 074018

Figure 5-20. Capacitor Test.

e. Voltage Regu/ator Test.

The regulator contains devices connected in a way that parallel circuits

exist, making it impossible to electrically test each individual component as several will be in the circuit at

the same time.

For this reason, point-to-point resistance checks may be inconclusive or misleading. Refer to On-Vehicle

Testing, paragraph 5-2.

f. Rotor Test.

The rotor is tested for grounds and proper coil resistance as follows:

(1)

Connect

If a reading other than

replaced .

an ohmmeter between the rotor shaft and both sliprings, one at a time (fig. 5-21).

infinity is obtained, the rotor coil is grounded and the rotor must be removed and

Figure 5-27. Rotor Coil Test.

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(2)

Check rotor coil resistance by connecting an ohmmeter across the two two sliprings, as shown

above. The resistance should be between 2.3 and 2.7 ohms.

5-18