STUD-WELD 9D4439 - Caterpillar

Introduction
For specifications with illustrations, make reference to Specifications For 3406 And 3406B Generator Set Engines, Form No. SENR2536. If the Specifications in Form SENR2536 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 given in the book with the latest date.Troubleshooting
Troubleshooting can be difficult. The TROUBLESHOOTING INDEX gives a list of possible problems. To make a repair to a problem, make reference to the cause and correction on the pages that follow.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 recommendation 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 is only a guide and cannot give all possible problems and corrections. The serviceman must find the problem and it source, then make the necessary repairs.1. Engine Crankshaft Will Not Turn When Start Switch Is On.2. Engine Will Not Start.3. Engine Misfires Or Runs Rough.4. Stall At Low rpm.5. Sudden Changes In Engine rpm.6. Engine With Dashpot Governor Is Slow To Correct Speed Or Hunts (Changes Speed Constantly).7. Not Enough Power.8. Too Much Vibration.9. Loud Combustion Noise.10. Valve Train Noise (Clicking).11. Oil In Cooling System.12. Mechanical Noise (Knock) In Engine.13. Fuel Consumption Too High.14. Loud Valve Train Noise.15. Too Much Valve Lash.16. Valve Rotocoil Or Spring Lock Is Free.17. Oil At The Exhaust.18. Little Or No Valve Clearance.19. Engine Has Early Wear.20. Coolant In Lubrication Oil.21. Too Much Black Or Gray Smoke.22. Too Much White Or Blue Smoke.23. Engine Has Low Oil Pressure.24. Engine Uses Too Much Lubrication Oil.25. Engine Coolant Is Too Hot.26. Exhaust Temperature Is Too High.27. Starter Motor Does Not Turn.28. Alternator Gives No Charge.29. Alternator Charge Rate Is Low Or Not Regular.30. Alternator Charge Rate Is Too High.31. Alternator Has Noise.32. Rack Solenoid Does Not Stop Engine. Problem 1: Engine Crankshaft Will Not Turn When Start Switch Is On Probable Cause:1. Battery Has Low Output: Make Reference to Item 27.2. Wires Or Switches Have Defect: Make Reference to Item 27.3. Starter Motor Solenoid Has A Defect: Make Reference to Item 27.4. Starter Motor Has A Defect: Make Reference to Item 27.5. Inside Problem Prevents Engine Crankshaft From Turning: If the crankshaft cannot be turned after the drive equipment is disconnected, remove the fuel nozzles and check for fluid in the cylinders while the crankshaft is turned. If fluid in the cylinders is not the problem, the engine must be disassembled to check for other inside problems. Some of these inside problems are bearing seizure, piston seizure, wrong pistons installed in the engine, and valves making contact with pistons. Problem 2: Engine Will Not Start Probable Cause:1. Starter Motor Turns Too Slow: Make Reference to Items 27 and 28.2. Dirty Fuel Filter: Install