Table 4-4. Organizational Troubleshooting Chart - continued

TM5-4210-224-14&P

Table 4-4. Organizational Troubleshooting Chart.(Continued)

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

15. WATER IN FIRE PUMP GEAR BOX.

Step 1. Check for leak coming from above pump causing spillage onto pump gear box.

Tighten piping connections as required.

Step 2. Check for excessive leakage at pump packing.

Follow procedures for "LEAK AT FIRE PUMP PACKING" above.

ENGINE COOLING SYSTEM

16. ENGINE COOLANT OVERHEATING.

Step 1. Inspect pressure cap for proper seal.

Replace pressure cap (paragraph 4-72).

Step 2. Check coolant level.

Fill cooling system to proper level (paragraph 4-72).

Step 3. Check for loose or worn fan belt.

Replace worn fan belt (paragraph 4-76). Tighten fan belt.

Step 4. Check for damaged coolant hoses.

Replace coolant hoses (paragraph 4-77).

Step 5. Check for damaged or inoperative thermostat.

Replace thermostat (paragraph 4-79).

Step 6. Check for scale or deposits in cooling system.

Clean and flush cooling system (paragraph 4-72).

Step 7. Check for damaged radiator.

Replace radiator (paragraph 4-81). Refer to next higher level of maintenance for repair.

17. ENGINE COOLANT LOSS.

Visually inspect hoses, radiator, clamps, water pump, thermostat housing, radiator drain, engine soft plugs for

leakage.

Tighten connections as necessary.

ENGINE EXHAUST SYSTEM

18. VIBRATING OR RATTLING FROM EXHAUST SYSTEM.

Visually inspect for loose or misaligned components.

Align and tighten connections. Replace damaged hanger brackets or clamps (paragraph 4-104).

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