WIRE ASSEM. 6D7869 - Caterpillar

Introduction
The problem that is identified below does not have a known permanent solution. Until a permanent solution is known, use the solution that is identified below.Problem
The 70 pin connector of the 326-5234 Control Harness As (Inverter Harness) at the Power Inverter Module may be misaligned during assembly. The jack screw of the 70 pin connector can be cross threaded, and not allowing full engagement of the connector plug to the receptacle bulkhead. This may cause intermittent fault codes 2789, 2790 or 2791 (FMI 3 or 4), CID 3430 - FMI: 14. This also may result in damage or corrosion to connector pins and sockets.Solution
Perform the following test procedure to check for proper installation of the 326-5234 Control Harness As (Inverter Harness) :Test Procedure
Use the following test procedure to check for proper installation of the 70 pin connector of the 326-5234 Control Harness As (Inverter Harness) onto the Power Inverter Module on D7E Track-Type Tractors:
Illustration 1 g03081916
D7E Inverter with ECM and Inverter Harness (1) 326-5234 Control Harness As (Inverter Harness) (2) Harness bolt and washer (3) Location of Jack screw on Inverter (4) Location of Jack screw on ECM (5) Connector
Remove the harness bolt and washer (2) on the 326-5234 Control Harness As (Inverter Harness) (1) .
Check for proper assembly of the 326-5234 Control Harness As (Inverter Harness) (1) to the inverter. If the connector at the location of Jack screw (3) can be removed within five complete 360 degree turns of backing off the jack screw, then the jack screw was not fully engaged.Inverter Not Properly Assembled
If the inverter is not properly assembled, perform the following procedure:
Remove the harness at the location of jack screws (4) and connector (5) completely.
Inspect harness plug and header receptacle at the location of jack screw (3) for pin damage, corrosion, debris, fluids, or cross thread damage to the jack screw and brass nut.
Clean/Repair as necessary.
In case of corrosion or pin damage, replace affected parts.
Check the threads on the jack screw for damage. If the threads are damaged, then the harness will need to be scrapped and a new harness will have to be used.
If the threads are in good condition, then make sure that there is no debris embedded in the threads. Clean out any debris for making sure that none of the debris falls into the sockets of the connector. If needed, tap the brass nut out using a 6 mm (0.24 inch) diameter with 1 mm (0.04 inch) thread pitch tap.Note: Clean all metal flakes and debris out of inverter connector, both where the pins are and inside the nut.This should be done by using CLEAN DRY compressed air to blow out the debris. Make sure that no debris falls back into the connector.
Reinstall the harness starting at jack screw at (3). Carefully remate the connectors to make sure that the jack screw at (3) is not cross threaded again.Note: There should be at least six complete 360 degree turns of engagement of the jack screw prior to