WASHER-THRUST 9C9537 - Caterpillar

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. Contactor Switch For Water Temperature Does Not Activate Shutoff Solenoid.2. Contactor Switch for Water Temperature Activates Shutoff Solenoid at Wrong Temperature.3. Contactor Switch for Oil Pressure Fails to Activate Shutoff Solenoid.4. Contactor Switch for Overspeed Fails to Activate Shutoff Solenoid.5. Contactor Switch for Overspeed Activates Shutoff Solenoid at Wrong Speed.6. Shutoff Solenoid Fails to Stop Engine.7. Shutoff Solenoid Prevents Engine Start.8. Clutch Will Not Engage (Slips), Heats or Lever Moves to Released Position.9. Clutch Shaft Has Too Much End Play.10. Clutch Bearings Have Short Service Life.11. Hydra-mechanical Shutoff Will Not Let Engine Start.12. Hydra-mechanical Shutoff Will Not Let Engine Run Above 70% of Rated Engine Speed.13. Hydra-mechanical Shutoff Activates With Engine Oil Pressure and Water Temperature Normal.14. Electrical Gauges Give Wrong Readings.15. 2301 Nonparallel Control System. a. Engine Will Not Start.b. Engine Overspeeds On Starts.c. Engine Overspeeds After Operation At Rated Speed For Some Time.d. Low Idle Speed Potentiometer Gives No Adjustment.e. Engine Does Not Return To Low Idle When The Idle (Oil Pressure) Switch Opens.f. Engine Speed Does Not Have Stability.g. Speed Trim Potentiometer Gives No Adjustment.h. Rated Speed Potentiometer Gives No Adjustment.i. Load Sharing Is Not Correct.j. Engine Speed Is Not Isochronous.16. 2301 Parallel Control System. a. Engine Will Not Start.b. Engine Overspeeds On Starts.c. Engine Overspeeds After Operation At Rated Speed For Some Time.d. Low Idle Speed Potentiometer Gives No Adjustment.e. Engine Does Not Return To Low Idle When The Idle (Oil Pressure) Switch Opens.f. Engine Speed Does Not Have Stability.g. Speed Trim Potentiometer Gives No Adjustment.h. Rated Speed Potentiometer Gives No Adjustment.i. Load Sharing Is Not Correct.j. Engine Speed Is Not Isochronous.k. System Does Not Have Stability When Paralleling Or In Parallel.17. Woodward UG-8 Governors a. Engine Speed Does Not Have Stability.b. Fuel Control Response When the Engine Is Started Is Not Acceptable.c. Engine Is Slow To Respond To A Change In Speed Setting or Load.d. Load Sharing Between Paralleled Units Is Not Correct (One unit on zero droop all others on droop).e. Load Sharing Between Paralleled Units Is Not Correct (all units on droop).18. Automatic Start/Stop Systems. Measuring Engine Speed
Measuring Engine Speed
5P2150 Engine Horsepower Meter or4S6553 Instrument Group or1P5500 Portable Phototach Group
5P2150 ENGINE HORSEPOWER METERThe 5P2150 Engine Horsepower Meter can measure engine speed from the tachometer drive on the engine. Special Instruction Form No.