CONTROL GP-HANDLE 2549139 - Caterpillar

This topic is intended to provide the owner/operator suggestions for diagnosing minor engine problems. The guidelines are only brief descriptions of common sense remedies which can be performed without extensive knowledge of the engine operation.Refer to the Service Manual for extensive descriptions of problems and instructions for repair. Caterpillar recommends contacting your authorized Caterpillar engine dealer for major engine problems which require special tools and procedures.Troubleshooting a failure on an engine can be a difficult procedure. For a troubleshooting manual, see the Service Manual for your engine. All repairs should be made by a properly trained mechanic. Your Caterpillar dealer has the personnel and special tools needed to troubleshoot and make repairs to your engine.The list of problems, causes and corrections given in the Service Manual, will only give an indication of where a possible problem can be, and what repairs may be needed.Remember that a problem is not normally caused only by one part, but by the relation of one part with other parts.The Service Manual can not give all possible problems and corrections. The serviceman must find the problem and its source, then make the necessary repairs.Your Caterpillar dealer is equipped with the necessary tools and personnel to provide assistance when necessary. This index and following information is for mechanical and limited electronic problems. Refer to the Service Manual for extensive descriptions of problems and instructions for repair of mechanical and electrical systems.Troubleshooting Index
1. Engine will not crank2. Engine cranks, but will not start3. Engine starts, but stalls immediately4. Erratic or unstable engine speed (rpm)5. Engine misfires or runs rough6. No or poor response to throttle7. Low power/Engine speed (rpm) restricted8. Intermittent engine shutdowns or power reduction9. Low engine oil pressure10. Excessive lubrication oil consumption11. High exhaust temperature12. Abnormal engine coolant temperature13. Excessive fuel consumption14. Alternator fails to charge/charging rate high, low or unsteadyIf you have a problem that does not appear in this index, refer to the Service Manual for your engine and/or contact your Caterpillar dealer.1. Engine will not crank
Batteries: Make sure battery cables are corrosion free and securely attached. Check battery output and charge or replace. Starting Circuit Wiring: Check wiring to starting motor solenoid. Starting Solenoid: Inspect starting motor cables for corrosion, damage or loose connections. Starting Motor: Test solenoid and starting motor operation.2. Engine cranks, but will not start
Fuel Supply: Check for empty fuel tank, plugged fuel tank connections, obstructed or kinked fuel suction lines, plugged fuel filter, air in fuel system or kinked, leaking or broken fuel lines. Fuel Transfer Pump: At cranking speed, the fuel transfer pump should supply fuel to the engine at 3 psi (20 kPa). If fuel pressure is less than 3 psi, replace the fuel filters. Check for air in the fuel system, sticking, binding or defective fuel bypass valve. Check lip-type seal on transfer pump drive shaft. When the engine is fully loaded the transfer pump should supply fuel at 20 to 30 psi (138 to 208 kPa). Engine Timing: See your authorized dealer.