VALVE 8J8854 - Caterpillar

Electrical Connectors
Many of the procedures in this guide will direct you to a specific electrical connector. The connectors have a locking feature that holds the pins. The connectors have a locking feature that holds the sockets. The connectors are repairable without cutting the wires. Do not solder sockets and pins to the wires. Sockets and pins should always be crimped onto the wires. The 1U-5804 Crimp Tool can be used to crimp the sockets and the pins to the wires.
Illustration 1 g00738352
Terminal connectionsThe 8T-8729 Connector Pin and the 8T-8730 Connector Socket is designed to accept only one 16/18 AWG wire. Do not insert multiple wires of a smaller wire size. The 9W-0852 Connector Pin and the 9W-0844 Connector Socket is designed to accept only one 14 AWG wire. Do not insert multiple wires of a smaller wire size.
Illustration 2 g00690571
Installation of seal plugsAll unused slots in the connector socket must be filled with a 8T-8737 Seal Plug. This will ensure proper sealing for the connector. Connector plugs are used to fill unused pin locations and socket locations of connectors. Proper insertion of connector plugs is critical. Illustration 2 demonstrates the correct insertion of the plug. The plug cap is designed to rest against the seal. Do not insert the plug cap into the hole in the seal.HD-10 Connectors
Ensure that the plug and the receptacle are aligned with the index marking. Rotate the plug until the plug slips into the receptacle. Rotate the coupling to a quarter turn. A click will be heard. Ensure that the two halves cannot be pulled apart. The acceptable range for the outside diameter of the wire is 2.50 to 3.75 mm (0.100 to 0.150 inch).DT Connectors
The DT connectors use a wedge to lock the pins in place. Check that the seals are in place and check that the seals are properly seated. Check pins and sockets before joining connectors. Verify proper alignment and locations of pins and sockets in each connector. Check the locking tab for the DT connector for damage. Replace the connector if the tab is damaged. Ensure that the connector is properly locked. An audible click will be heard. Ensure that the two mating connectors can not be pulled apart. The acceptable range for the outside diameter of the wire is 2.20 to 3.68 mm (0.088 to 0.145 inch).Customer Connectors
Illustration 3 g00999634
Customer connectors
Table 1
Customer Connectors    
Part Number     Description    
9X-4391     Customer Connector (70 pin)    
8T-9834     Customer Connector (40 pin)    
153-2707     Cable J-1939
The data link cable must be fabricated to the correct length.    
143-5018     Data Link Cable
The data link cable must be fabricated to the correct length.    
8T-8737     Seal Plug    
1U-5805     Wire Removal Tool
14 AWG    
151-6320     Wire Removal Tool
16 AWG    Ensure that the Allen head screw for the customer connector is properly tightened. Do not exceed 2.25 N m (20 lb in)