WASHER-HARD 3E4352 - Caterpillar

System Operation Description:Most electrical problems are caused by poor connections. The following procedure will assist in detecting problems due to connectors. If a problem is found in an electrical connector, repair the connector. Do NOT cut connector wires unless terminals are being replaced. Repair the connectors with a 1U-5804 Crimp Tool .Intermittent electrical problems often disappear by disconnecting and reconnecting connectors. Check for diagnostic codes before disconnecting and connecting a connector. If a diagnostic code is generated due to disconnecting and reconnecting a connector, there are several possible reasons. The likely problems are loose or improperly crimped terminals, moisture, corrosion, or connectors not mated securely.The following procedure will ensure the correct installation of pins and sockets in connectors:
Do not solder the sockets and pins to the wires.
Do not crimp any more than one wire into a socket or into a pin. Refer to Illustration 3. Sockets and pins should be crimped on the wires. Use the 1U-5804 Crimp Tool for 12 - 18 gauge wire.
Unused slots for sockets and pins must be filled with sealing plugs in order to ensure that the connector is sealed.
Sealing plugs should be installed on the back side of the connector. Wires are inserted into the connector from the back side.
The sealing plugs that are installed in unused slots must seal correctly. The plug rests against the seal face. Do not permit the large end of the plug to go past the seal face. Refer to Illustration 4 for correct installation of plugs.
Table 1
Removal Tools for Deutsch Connectors    
Wire Gauge     Cat Part Number    
4-6     4C-4071    
8-10     4C-4072    
10-12     4C-4073    
14-16     4C-4074    
16-18     8T-5318    
Illustration 1 g00889323
Illustration 2 g00720332
Harness
Illustration 3 g00721340
Illustration 4 g00690571
Deutsch Sealing Plug
Illustration 5 g00690572
Deutsch Contact TerminalsTest Step 1. Check the Locking of the DT Connector (Deutsch) and Check the Lock Ring of the HD Style Connector (Deutsch).
Ensure that the connector is properly locked. Also ensure that the two halves of the connector can not be pulled apart.
Verify that the latch tab of the connector is properly latched.Expected Result:The connector will securely lock. The connector and the locking mechanism are without cracks or without breaks.Results:
OK - The connector will lock securely. The connector and the locking mechanism are without cracks or without breaks. The connector is okay. Proceed to test step 2.
Not OK - The connector will not securely lock or the connector and the locking mechanism have cracks or breaks. The connector needs repair.Repair: Repair the connector or replace the connector, as required. Refer to Special Instruction, SEHS9615, "Servicing DT Connectors". Refer to Special Instruction, SEHS9065, "Use of CE/VE Connector Tools".Verify that the repair eliminates the problem. Stop.Test Step 2. Check the Allen Head Screw on the Connector for the Electronic Control Module (ECM).
Ensure that the allen head screw is properly tightened. Be careful not to overtighten the screw and break the screw.
Do not exceed 2.25 N m (20 lb in) of torque on the allen head screw.Expected Result:The ECM connector is secure