COLLAR 6K0043 - Caterpillar

Introduction
For Specifications with illustrations, make reference to Specifications For 3406 Spark Ignited Engine Attachments, Form No. SENR3868. If the Specifications in Form SENR3868 are not the same as in the Systems Operation and 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. 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. Problems 1 through 5 are for troubleshooting the self-powered engine protection system. To troubleshoot the energized-to-run (ETR) protection systems, refer to Troubleshooting Guide (ETR), Form No. SENR3609.Problem 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.Problem Checklist
Problem 1. Contactor Switch (Water Temperature) Fails To Signal Shutoff Probable Cause1. Incorrect Electrical Connections Check connections to other components or install new wiring. See WIRING DIAGRAM for SELF-POWERED PROTECTION in the WIRING DIAGRAMS section.2. Low Water Level in Cooling System Fill the cooling system.3. Incorrect Setting Test operation (trip) temperature setting and if necessary install new contactor switch with proper setting. See Specifications. Problem 2. Contactor Switch (Water Temperature) Signals Shutoff At Low Temperature Probable Cause1. Incorrect Setting Test operating (trip) temperature setting and if necessary install new contactor switch with proper setting. See Specifications. Problem 3. Oil Pressure Contactor Fails To Signal Shutoff Probable Cause1. Incorrect Electrical Connections See JUNCTION BOX WIRING DIAGRAM for SELF-POWERED PROTECTION in the WIRING DIAGRAMS section for the correct wiring connections.2. Incorrect Setting Test and adjust contactor. If necessary install new contactor switch. Problem 4. Overspeed Contactor Switch Fails To Signal Shutoff Probable Cause1. Incorrect Electrical Connections Check connection, wiring and correct where necessary. See WIRING DIAGRAM for SELF-POWERED PROTECTION in the WIRING DIAGRAMS section.2. Incorrect Setting Adjust setting or install new contactor switch with the correct rpm range if necessary. Problem 5. Overspeed Contactor Signals Shutoff At Low Speed Probable Cause1. Incorrect Setting Adjust setting or install new contactor switch with the correct rpm range if necessary.Mechanical Gauges For Temperature
To check these gauges, put the bulb of the gauge in a pan of oil. Do not let the bulb touch the pan. Put a thermometer in the oil to measure the temperature. Make a comparison of temperatures on the thermometer with the temperatures