ARMY TM 9-6115-645-24
AIR FORCE TO 35C2-3-444-12
MARINE CORPS TM 09244A/09245A-24/2
TABLE 3-1. DIRECT SUPPORT TROUBLESHOOTING - Continued
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
10. ABNORMAL ENGINE NOISE.
Step 1. Check for defective engine mounts.
a. If engine mounts are not defective, do Step 2.
b. If engine mounts are defective, replace mounts in accordance with paragraph 3-7.
Step 2. Check valve adjustment, refer to TM 9-2815-256-24.
a. If valves are properly adjusted, do Step 3.
b. If valves are improperly adjusted, adjust valves in accordance with TM 9-2815-256-24.
Step 3. Check for worn rocker arm shafts, refer to TM 9-2815-256-24.
a. If rocker arm shafts are not worn, do Step 4.
b. If worn, replace rocker arms in accordance with TM 9-2815-256-24.
Step 4. Check for bent push rods, refer to TM 9-2815-256-24.
a. If push rods are not bent, do Step 5.
b. If bent, replace push rods in accordance with TM 9-2815-256-24.
Step 5. Check for worn idler gears, refer to TM 9-2815-256-24.
a. If idler gears are not worn, do Step 6.
b. If worn, replace idler gears in accordance with TM 9-2815-256-24.
Step 6. Check for foreign material in combustion chamber, refer to TM 9-2815-256-24.
a. If foreign material is found, clean combustion chamber in accordance with TM 9-2815-256-24.
b. If no foreign material is found and problem persists, replace engine. Refer to TM 9-2815-256-24.
11. GENERATOR SET FAILS TO GENERATE POWER.
I
Step 1. Test for defective governor control unit, paragraph 4-2.1.
a. If governor control unit is not defective, do Step 2.
b. If defective, replace governor control unit, paragraph 4-2.3.
Step 2. Test for defective AC voltage regulator.
a. If voltage regulator is not defective, do Step 3.
b. If defective, replace AC voltage regulator, paragraph 4-1.
Step 3. Test for defective generator exciter stator, paragraph 4-20.1.
a. If exciter stator is not defective, do Step 4.
b. If defective, replace exciter stator, paragraph 4-20.
3-7
