Refer to Applicable Ford Motor Company Service Manual

Fuel System

1. No fuel delivery to carburetor
1. Visually inspect fuel tank for adequate fuel supply
2. Check fuel shut-off valve on bottom of tank to ensure valve is in "on" position.
3. Check fuel line from tank to in-line filter for collapse, sharp bends or internal obstruction.
4. Check in-line fuel filter for clogged conditions.
5. Check electric fuel shut-off valve for:
   -Current to solenoid with key in "on" position.
   -Proper grounding of solenoid to chassis (use ohmmeter to verify).
   -Proper function of electro-mechanical valve.
   -Internal obstruction.
   
6. Check fuel pump for correct delivery pressure (approximately 2-3 pasi).
7. Check entire systems for leaks.

1. Flat tires
1. Operating vehicle with incorrect tire inflation pressures.
   -Recommended inflation pressure is 90 psi.
   -Never operate vehicle when tire inflation pressures are below 60 psi.
   
2. Check for damaged tire guides, which may be cutting tires.
   -Indicated by a spiral cut pattern on sidewall of tire.
2. Damaged Wheels
1. Incorrect tire inflation pressures.
2. Impact loading due to operation over extremely rough terrain.
3. Broken Springs/Torsion Axles
1. High-speed vehicle operation in an unloaded condition.
2. Impact loading due to operation over extremely rough terrain.
3. Exceeding payload.
   -Use optional H.D. springs/torsion axles.

1. Overheating
1. Low coolant level.
2. Faulty thermostat.
3. Radiator air inlet clogged by snow, ice, weeds, etc.
4. Incorrect fan belt tension or broken fan belt.
5. Leaking fan/radiator shroud.
2. Water pump failure
1. Frozen engine.
   -Check density of coolant for adequate anti-freeze.
2. Incorrect fan belt tension placing excessive side load on bearing and shaft.
3. Heater core failure
1. Coolant shut-off valve installed in wrong heater hose.
4. Loss of Coolant
1. Leaks
   -Pressure test system including radiator cap, check for leakage.
2. Overheating
3. Faulty head gasket.
   -Indicated by presence of coolant in oil and/or exhaust system.

1. Broken frame member.
1. Severe impact, abuse or exceeding payload.
2. Cracked windshield
1. Impact damage.
2. Thermal shock.
   -Allow glass to warm up slowly. Refer to operating manual.
3. Distorted window mounting.
   -Check cab for collision damage.

1. Differential failure
1. Determine symptom, refer to differential assembly troubleshooting section.
2. Drive axle failure
1. Failure of outboard axle bearing.
2. Shock loading of drive system.
3. Severe impact loading on drive sprocket.

1. Brake will not hold vehicle on a steep grade or stop a vehicle in motion.
1. Broken brake cable.
2. Brake mis-adjusted.
3. Cable frozen due to entry of moisture into cable housing.
4. Brake shoes worn out.
   -Most often results from driving vehicle with brake on.

1. Inoperative lights
1. Bulb failure due to vibration, voltage surges or mis-adjusted or defective voltage regulator.
2. Corroded terminals or bulb holder.
3. Broken wires or connectors pulled apart.
4. Burnt fuse.
5. Faulty switch.
2. Inoperative gauges
1. Corroded terminals.
2. Broken wires or connectors pulled apart.
3. Burnt fuse.
4. Faulty gauge.
5. Faulty sending unit.
6. Gauge or sending unit wired incorrectly.
3. Alternator failure or insufficient charge rate.
1. Reversing battery cables during installation.
2. Alternator wired into system incorrectly.
3. Disconnecting battery from system while engine is running.
4. Low charge rate due to broken or loose v-belt.

1. Difficult steering, steering failure
1. Incorrect fluid in master cylinders.
2. Incorrect seals installed in slave and/or master cylinders.
3. Incorrect steering band adjustment.
4. Incorrect oil in differential.
   -Refer to lubrication chart.

1. Cut belts
1. Turning vehicles on sharp rocks or on a piece of sharp metal.
2. Broken grousers.
1. Vehicle overloaded.
2. Improper driving technique.
3. Material defect.
4. Bolt torque not properly maintained.
3. Tire guide breakage
1. Vehicle overloaded.
   -Use new type H.D. tire guides.
2. Material defect.
3. Bolt torque not properly maintained.
4. Broken belt lacing or short service life.
1. Operation in sand or dirt reduces service life.
2. Tracks mis-adjusted.
3. Vehicle overloaded.
4. Incorrect track connector bolt.

For your Survival!