SEAL 1B1064 - Caterpillar

Problem Solving
Index
1. Contactor Switch (Water Temperature) Fails to Signal Shutoff.2. Contactor Switch (Water Temperature) Signals Shutoff at Low Temperature.3. Oil Pressure Contactor Fails to Signal Shutoff.4. Overspeed Contactor Switch Fails to Signal Shutoff.5. Overspeed Contactor Switch Signals Shutoff at Low Speed.6. Rack Solenoid Fails to Shutoff Engine.7. Rack Solenoid Prevents Engine Start.8. Unstable Woodward UG-8.9. Unstable Output Shaft Governor Operation.10. Clutch Slips, Heats or Lever Disengages.11. Clutch Shaft End Play Excessive.12. Air Starting Motor Cranks Slowly.13. Hydraulic Starting System Fails to Crank or Cranks Slowly.14. Prelubrication Pump Motor Fails to Turn or Turns Slowly.15. Prelubrication Pump Motor Fails to Stop.Contactor Switch (Water Temperature) Fails to Signal Shutoff Contactor Switch (Water Temperature) Signals Shut-Off At Low Temperature Oil Pressure Contactor Fails To Signal Shutoff Overspeed Contactor Switch Fails To Signal Shutoff Overspeed Contactor Signals Shutoff At Low Speed Rack Solenoid Fails To Shut Off Engine Rack Solenoid Prevents Engine Start Unstable Woodward UG-8 Unstable Output Shaft Governor Operation Clutch Slips, Heats Or Lever Disengages Clutch Shaft End Play Excessive Air Starting Motor Cranks Slowly Hydraulic Starting System Fails To Crank Or Cranks Slowly Prelubrication Pump Motor Fails To Turn Or Turns Slowly Prelubrication Pump Motor Fails To Stop Woodward UG-8 Governor
Adjustments
Only competent personnel should attempt to adjust fuel rack settings and the governor. The low and high idle RPM, and rack setting dimension for these engines are listed in the RACK SETTING INFORMATION.
Adjusting Low or High Idle Speed
Check the engine LOW or HIGH IDLE speed with a hand tachometer at the tachometer drive connection. The tach drive rotates at one half engine RPM.1. Set the