ARMY TM 9-6115-645-24
AIR FORCE TO 35C2-3-444-12
MARINE CORPS TM 09244A/09245A-24/2
TABLE 2-6. UNIT TROUBLESHOOTING - Continued
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
13. ENGINE OVERHEATING.
Step 1. Check for broken or loose fan belts, paragraph 2-83.1.
a. If fan belts are not broken and tension is correct, do Step 2.
b. If worn or broken, replace fan belts. If loose, adjust fan belts, paragraph 2–83.2.
Step 2. Check for defective radiator cap, paragraph 2-77.2.
a. If radiator cap is not defective, do Step 3.
b. If defective, replace radiator cap, paragraph 2-77.
Step 3. Check for defective coolant hose(s).
a. If coolant hoses are not leaking or collapsed, do Step 4.
b. If defective, replace coolant hose(s), paragraphs 2-77 through 2-80.
Step 4. Test for defective thermostats, refer to TM 9-2815-256-24.
a. If thermostats are not defective, do Step 5.
b. If defective, replace thermostat(s) in accordance with TM 9-2815-256-24.
Step 5. Check for clogged radiator.
a. If radiator is not clogged, do Step 6.
b. If clogged, remove obstruction or replace radiator, paragraph 2-81.
Step 6. Check for defective water pump, refer to TM 9-2815-256-24.
a. If defective, replace water pump in accordance with TM 9-2815-256-24.
b. If water pump is not defective and trouble persists, notify next higher level of maintenance.
14. ENGINE COOLANT TEMPERATURE TOO LOW.
Step 1. Check for defective thermostats, refer to TM 9-2815-256-24.
a. If thermostats are operating correctly, do Step 2.
b. If defective, replace thermostat(s) in accordance with TM 9-2815-256-24.
Step 2. Test for defective temperature sender, paragraph 2-107.1.
a. If temperature sender is not defective, do Step 3.
b. If defective, replace temperature sender, paragraph 2-107.
Step 3. Test for defective COOLANT TEMP. indicator, paragraph 2-24.2.
a. If defective, replace COOLANT TEMP. indicator, paragraph 2-24.
b. If COOLANT TEMP. indicator is not defective and trouble persists, notify next higher level of mainte-
nance.
2-19
