SEGMENT-SPROCKET 3613977 - Caterpillar

Illustration 1 g01021696
Typical exampleTest Step 1. Check for Connector Damage.
Turn the circuit breaker for the battery to the OFF position.
Turn the ECS to the OFF/RESET position.
Thoroughly inspect the ECM connectors J1/P1 and J2/P2. Inspect all of the other connectors. Refer to the diagnostic functional test Troubleshooting, "Inspecting Electrical Connectors" for details.
Perform a 45 N (10 lb) pull test on each of the wires in the ECM connector that are associated with the circuit.
Check the ECM connector (allen head screw) for the proper torque of 6.0 N m (55 lb in).
Check the customer connector (allen head screw) for the proper torque of 2.25 0.25 N m (20 2 lb in).
Check the harness and the wiring for abrasion and for pinch points.Expected Result:All connectors, pins, and sockets are completely coupled and/or inserted, and the harness and wiring are free of corrosion, of abrasion or of pinch points.Results:
OK - The connectors and wiring are okay. Proceed to Test Step 2.
Not OK - The connectors and/or wiring are not okay.Repair: Repair the connectors or wiring and/or replace the connectors or wiring.STOPTest Step 2. Check for Output Voltage to the Prelube Motor.
Turn the circuit breaker for the battery to the ON position.
Turn the ECS to the OFF/RESET position.
Connect one lead of a voltmeter to the −Battery terminal.
Connect the other lead of the voltmeter to wire C465-OR on terminal 2 of the prelube switch.
Turn the ECS to the START position.
Monitor the voltage on the voltmeter.
Turn the ECS to the STOP position.Expected Result:The voltage is 24 3 VDC.Results:
OK - The voltage is 24 3 VDC. Proceed to Test Step 7.
Not OK - The voltage is not 24 3 VDC. Proceed to Test Step 3.Test Step 3. Check for Output Voltage to the Prelube Switch.
Leave one lead of the voltmeter on the −Battery terminal.
Connect the other lead of the voltmeter to wire 118-GN on terminal 4 of the prelube switch.
Turn the ECS to the START position.
Monitor the voltage on the voltmeter.
Turn the ECS to the STOP position.Expected Result:The voltage is 24 3 VDC.Results:
OK - The voltage is 24 3 VDC.Repair: Verify that 24 3 VDC is present on terminal 1 of the prelube switch. If 24 3 VDC is not present on terminal 1, check the wiring and breakers between the battery and the prelube switch. Refer to Illustration 1 as a reference.Verify that wire 200-BK has continuity to the −Battery terminal. If wire 200-BK is okay and voltage is present on terminal 4, replace the prelube switch.STOP
Not OK - The voltage is not 24 3 VDC. Proceed to Test Step 4.Test Step 4. Check the Voltage from the Prelube Relay.
Leave one lead of the voltmeter on the −Battery terminal.
Connect the other lead of the voltmeter to wire 118-GN on terminal 30 of the prelube relay.
Turn the ECS to the START position.
Monitor the voltage on the voltmeter.
Turn the ECS to the STOP position.Expected Result:The voltage is 24 3 VDC.Results:
OK - The voltage is 24 3