SUPPORT-RING 4907833 - Caterpillar

troubleshooting procedures in this section require the inspection of electrical connectors and crimp terminals. If a faulty connection is found, repair the connection. Return to the original Troubleshooting procedures. Determine if the original fault has been resolved. If the fault has been corrected, continue with the original troubleshooting procedure.Note: The operator should avoid unnecessary disconnecting of connector halves and connecting of connector halves in order to troubleshoot system faults. This practice can cause the connector contacts within the connector to wear out prematurely.
Check The Connector Of The Control Board. Make sure that the harness connector with 24 contacts that is located on the control board is aligned and seated properly.
Perform the Pull Test on Each Wire. The connector contacts and wires that are located in the various harness connectors should easily withstand 10 pounds of pull. The connector contacts and wires should remain in the connector body. This test verifies that the wire in each connector contact was crimped properly. Also, this test verifies that the connector contact was completely inserted into the body of the connector. Repair the contacts as repair is needed. Use the correct crimp tool when the connector contacts are being replaced. The connector contact and the crimp tool should be matched to the wire gauge. Connector contacts should always be crimped onto the wire, never soldered.Also, perform the pull test for the crimp terminals before the terminals are insulated on the terminal strips. Repair the terminals as repair is needed. The operator should use the proper crimping tool and techniques for the type of crimp terminal and brand of crimp terminal. Use an adequately sized terminal for the wire gauge. For an improved electrical connection, crimp-on spade terminals and crimp-on ring terminals can be soldered to the wire.
Visually Inspect The Wiring. Look for worn wires. Check for pinched harnesses or damaged harnesses.
Visually Inspect Connectors And Crimp Terminals. Verify that connector contacts within the connectors are not corroded or damaged. Verify that the alignment is proper and verify the location of connector contacts that are located within the connector. Verify that the two halves of the connector are seated and verify that the halves are locked together.Check all crimp terminals for corrosion. Also, check the crimp terminals for damage. When the operator is wiggling each wire on a crimp terminal, the ends of the bare wires that are located on the open end of the terminal barrel should be tight. Also, the ends should not move. Check the tightness of the screws that are located on the terminal strip. Make any necessary repairs.
Check Individual Connector Contacts. This is especially important for intermittent problems. When service personnel are inserting the contacts into the mating connector contacts, new connector contacts should be used. Check for a snug fit between the contacts of the mating connectors. Repeat this procedure for the other connector half. Use a new connector of the correct type.