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

27. ENGINE OVERHEATS.

Step 1. Check coolant system for leaks.

Fill cooling system as necessary (paragraph 4-72).

Step 2. Inspect for loose or worn fan belts.

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

Step 3. Check if thermostat is stuck closed.

Replace thermostat (paragraph 4-79).

Step 4. Inspect for leaks at head gasket.

Replace head gasket (paragraph 4-79).

CAB ASSEMBLY, LIGHTS, SWITCHES, GAUGES,

CONTROLS AND INDICATORS

28. HEADLIGHTS INOPERATIVE.

Step 1. Inspect for loose connections to sealed beam.

Secure loose connections.

Step 2. Inspect for defective sealed beam units.

Replace sealed beam (paragraph 4-116).

29. FRONT SIDE MARKER LIGHTS INOPERATIVE.

Step 1. Inspect for loose or burnt out bulbs.

Secure or replace bulbs (paragraph 4-117).

Step 2. Inspect for loose connections.

Tighten connections.

Step 3. Inspect for blown fuse.

Replace fuse. If new fuse blows, check for short to ground between fuse panel and lights.

Step 4. Test light switch.

Replace switch if defective (paragraph 4-130).

30. TURN SIGNALS INOPERATIVE.

Step 1. Inspect for loose or burnt out bulbs.

Secure or replace bulbs (paragraph 4-50).

Step 2. Inspect for loose connections.

Tighten connections.

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