ARMY TM 9-6115-644-24
AIR FORCE TO 35C2-3-446-12
MARINE CORPS TM 09249A/09246A-24/2
TABLE 3-1. Direct Support Troubleshooting - Continued
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Step 3.
Test for defective AC voltage regulator.
a.
If voltage regulator is not defective, do step 4.
b.
If defective, replace AC voltage regulator, paragraph 4-1.
Step 4.
Test for defective generator stator, paragraph 4-24-1.
If defective, replace generator stator and housing assembly, paragraph 4-24.
13. GENERATOR SET OUTPUT FLUCUATES.
Step 1.
Check for irregular engine speed, refer to TM 9-2815-255-24.
a.
If engine is operating correctly, do step 2.
b.
If engine is not operating correctly, repair in accordance with TM 9-2815-255-24.
Step 2.
Check for loose terminations or refer to FO-1.
a.
If terminations are tight, do step 3.
b.
If loose, tighten terminals.
Step 3.
Test for defective AC voltage regulator.
a.
If voltage regulator is not defective, do step 4.
b.
If defective, replace AC voltage regulator, paragraph 4-1.
Step 4.
Test for intermediate short in generator exciter field, paragraph 4-21-1.
If shorted, replace exciter stator, paragraph 4-21.
14. GENERATOR OVERHEATS.
Step 1.
Check for dogged air intake screens.
a.
If air intake screens are not dogged, do step 2.
b.
If dogged, dean air intake screens.
Step 2.
Check for defective fan, paragraph 4-23.
a.
If fan is not defective, do step 3.
b.
If defective, replace fan, paragraph 4-23-3.
Step 3.
Check for dry generator main bearing, paragraph 4-19.
If dry, replace main bearing, paragraph 4-19.
3-9
