PIN 2H9166 - Caterpillar

Introduction
When the words "use again" are in the description, the specification given can be used to determine if a part can be used again. If the part is equal to or within the specification given, use the part again.When the word "permissible" is in the description, the specification given is the "maximum or minimum" tolerance permitted before adjustment, repair and/or new parts are needed.A comparison can be made between the measurements of a worn part and the specifications of a new part to find the amount of wear. A part that is worn can be safe to use if an estimate of the remainder of its service life is good. If a short service life is expected, replace the part.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 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 is only a guide and cannot give all possible problems and corrections. The serviceman must find the problem and its source, then make the necessary repairs. For each problem, a list of possible causes and corrections is given. The list of probable causes and corrections should be performed in numeric sequence.1. Contactor Switch For Water Temperature Activates At Wrong Temperature.2. Contactor Switch For Oil Pressure Does Not Activate Shutoff Solenoid.Troubleshooting Problems
Problem 1: Contactor Switch For Water Temperature Activates At Wrong Temperature. Probable Cause:1. Wrong Setting Of Switch Make a test of temperature setting and if necessary install new contactor switch with correct setting. See specifications. Problem 2: Contactor Switch For Oil Pressure Does Not Activate Shutoff Solenoid. Probable Cause:1. Wrong Connections Check connections, wiring and correct where necessary.2. Wrong Setting Of Switch Make a test of temperature setting and if necessary install new contactor switch with correct setting. See specifications.Contactor Switch For Water Temperature
1. Make a heat sink as shown. Material can be brass, steel or cast iron. Drill a 23/32 inch hole through the plate and use a tap to make 1/2 inch NPT threads.
Heat Sink
[Dimensions in mm (inches)]2. Put marks on the two contactor wires that connect the contactor to the circuit. Disconnect the two wires.3. Remove the contactor and install a 3J5389 Plug. Install the contactor switch in the heat sink.4. Put the heat sink and contactor in water as shown. Use blocks to support the heat sink at surface level.5. Connect multimeter between the wires that connected the contactor to the circuit.
Test Of Contactor Switch
(1) 2F7112 Thermometer. (2) Fabricated heat sink.6. Put the 2F7112 Thermometer in the water.7. Stir the water while using a torch to heat it to the specified temperature given