Figure 2-11. Rotor Ground Test.

TM 9-2920-257-30&P

Table 21.

Generator Troubleshooting - Continued

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

Figure 2-11.

R o t o r Ground Test.

Step 13.

Remove fan, a n t i - d r i v e e n d h o u s i n g , a n d r o t o r i n

a c c o r d a n c e with paragraph 3-3b.

Step 14.

Check for grounded rotor field circuit according to

I f ohmmeter reading is less than 50,000 ohms,

the rotor is grounded.

R e p l a c e rotor and

r e a s s e m b l e generator in accordance with

I f ohmmeter reading is greater than 50,000

ohms, r o t o r i s n o t g r o u n d e d . Go to step 15.

2-13