Section III. PN N1205 AND N1206 (Niehofl)

TM 9-2920-257-30&P

Section III. PN N1205 AND N1206 (Niehofl)

2-4. ON VEHICLE TEST

a. After the generator has been received by direct support maintenance personnel for preliminary inspection, before

being installed on the engine, or if performance of the generator has been unsatisfactory due to unknown causes, you

must inspect as described in this section.

2-5. TEST SET-UP

a. Refer to vehicle manuals and discharge batteries as follows:

(1) Turn fuel off.

(2) Turn lights and accessories on.

(3) Crank engine for 10-15 seconds to discharge batteries.

(4) Turn lights and accessories off.

(5) Turn fuel on.

b. Determine factory setting of regulator and normal range of regulated voltage (Table 2-2).

Table 2-2. Voltage Regulator Specifications

GENERATOR

SYSTEM

FACTORY

NORMAL

(REGULATOR)

VOLTAGE

SETTING

RANGE

N1205/N1206

28.0

26.0 TO 30.0

c. Attach multimeter as indicated in Figure 2-13. If an in-line multimeter is used, disconnect battery ground cable

before connecting multimeter. Then reconnect battery ground cable. Multimeter connections must carry rated output of

generator.

Figure 2-13. Charging System Schematic

2-16 Change 1