ARMY TM 9-6115-641-24
AIR FORCE TO 35C2-3-456-12
Table 2-6. UNIT TROUBLESHOOTING - Continued.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Step 5. Test for defective MASTER SWITCH, paragraph 2-47-2.
a. If MASTER SWITCH is not defective, do Step 6.
b. If defective, replace MASTER SWITCH, paragraph 2-47.
Step 6. TEST for defective PRE-HEAT RELAY (K18).
a. If PRE–HEAT RELAY is defective replace paragraph 2-63-3.
b. If PRE–HEAT RELAY is not defective and problem persists, go to MALFUNCTION 2.
19. BATTERY CHARGE AMMETER SHOWS NO CHARGE WHEN BATTERIES ARE LOW OR DISCHARGED.
Step 1. Check for broken or loose fan belt, paragraph 2-75-1.
a. If fan belt is not broken and tension is correct, do Step 2.
b. If worn or broken, replace fan belt, paragraph 2-75. If loose, adjust fan belt, paragraph 2-75-4.
Step 2. Check for defective BATTERY CHARGER FUSE (FU1), paragraph 2-25-2.
a. If BATTERY CHARGER FUSE is not blown, do Step 3.
b. If defective, replace BATTERY CHARGER FUSE (FU1), (MT4), paragraph 2-25.
Step 3. Test for defective battery charging ammeter shunt, paragraph 2-29-2.
a. If shunt is not defective, do Step 4.
b. If defective, replace battery charging ammeter shunt, paragraph 2-29.
Step 4. Test for defective battery charging alternator, paragraph 2-14-2.
a. If battery charging alternator is not defective, do Step 5.
b. If defective, replace battery charging alternator, paragraph 2-14
Step 5. Test for defective BATTERY CHARGE ammeter, paragraph 2-43-2.
a. If BATTERY CHARGE ammeter is not defective, do Step 6.
b. If defective, replace BATTERY CHARGE ammeter, paragraph 2-43-3.
Step 6. Check for breaks or loose connections in charging circuit, refer to Wiring Diagram FO–2.
If breaks or loose connections are found, repair charging circuit.
20. BATTERY CHARGE AMMETER SHOWS EXCESSIVE CHARGING AFTER PROLONGED OPERATION.
Step 1. Test for defective batteries, paragraph 2-12-1.
a. If batteries are not defective, do Step 2.
b. If defective, replace batteries, paragraph 2-12.
2-21
