BODY 1U3966 - Caterpillar

Introduction
For Specifications with illustrations, make reference to SPECIFICATIONS FOR 5.4" BORE 60° V8 VEHICULAR ENGINE, Form No. SENR7205. If the Specifications in Form SENR7205 are not the same as in the Systems Operation and the Testing and Adjusting, look at the printing date on the back cover of each book. Use the Specifications in the book with the latest date.Troubleshooting
Troubleshooting can be difficult. On the following pages there is a list of possible problems. To make a repair to a problem, make reference to the cause and correction.This list of problems, causes, and corrections, will only give an indication of where a possible problem can be, and what repairs are needed. Normally, more or other repair work is needed beyond the recommendations in the list. Remember that a problem is not normally caused only by one part, but by the relation of one part with other parts. This list can not give all possible problems and corrections. The serviceman must find the problem and its source, then make the necessary repairs.1. Engine Fails to Start2. Misfiring3. Stalls at Low Speed4. Erratic Engine Speed5. Low Power6. Excessive Vibration7. Heavy Combustion Knock8. Valve Train Clicking Noise9. Oil in Coolant10. Mechanical Knock11. Excessive Fuel Consumption12. Loud Valve Train Noise13. Excessive Valve Lash14. Valve Spring Retainer Free15. Slobber16. Valve Lash Close-up17. Premature Engine Wear18. Coolant in Engine Lubricating Oil19. Excessive Black or Gray Smoke20. Excessive White or Blue Smoke21. Low Engine Oil Pressure22. High Lubricating Oil Consumption23. Abnormal Engine Coolant Temperature24. Starting Motor Fails to Crank25. Alternator Fails to Charge26. Alternator Charging Rate Low or Unsteady27. Alternator Charging Rate Excessive28. Noisy Alternator29. High Exhaust Temperature Fuel System
Difficulty within the fuel system can be classed in one of two groups: lack of fuel or too much fuel for proper combustion.Many times, the fuel system is blamed when the fault lies elsewhere, especially when smoky exhaust is the problem. Smoky exhaust can be the result of a faulty fuel injection valve, but it can also be caused by lack of air for complete combustion, overloading at high altitude, excessive oil burning or lack of compression.Troubleshooting The Fuel Supply System
1. Observe the fuel pressure gauge reading. Lack of pressure indicates difficulty in the supply side of the system.2. Check the fuel level in the supply tank and the fuel tank cap vent for being plugged.3. See that the vent valve is closed.4. Check for leakage in the fuel supply lines and components or for a kinked or restricted supply line.5. Replace the fuel filter element and clean the primary fuel filter.6. Inspect the fuel bypass valve to see that it moves freely and that dirt is not holding the plunger off its seat. Be certain the spring has proper tension.7. Bleed the fuel system to remove trapped air.8. Test the fuel transfer pump.To test the fuel transfer pump, connect an 8M2743 Pressure Gauge which is part of 7S8875 Hydraulic Test Box