VALVE GP-BRAKE CONTROL 3557411 - Caterpillar

Printer Cable (Payload) for Large Wheel Loader
Illustration 1 g00509378
Printer Cable (Payload ) for Large Wheel Loader The Large Wheel Loaders have a RS-232 port that may be used as a printer port. The configuration software determines whether the RS-232 port will be used as a printer port or configured for a radio telemetry system (broadcast). The port can not be configured for use with both functions simultaneously. Fabricate the cable that is shown in illustration 1. A modified 127-9797 Cable Assembly may also be used. Modify the cable by removing the PC connector and installing a connector that is compatible with the printer. Connections of the Radio Telemetry System (Broadcast)
Illustration 2 g00509379
Cables for the Radio Telemetry System (broadcast) All connections for Off-highway Trucks are made in the cabinet that is behind the cab. Be sure that all connections are tight.Power Connections (OHT)
+24 DCV
The main power connection is on the lower 3T-0376 Magnetic Switch (relay) of the two 3T-0376 Magnetic Switches. The magnetic switch is located in the upper center portion of the cabinet. The output of the magnetic switch (relay) is powered only when the key start switch is in the ON position. This circuit also connects to circuits that are marked with the wire number 112-PU. The other output on this magnetic switch is live when the disconnect switch is closed. This circuit also connects with circuits that are marked with the wire number 109-OR.Provide circuit protection by placing a 10 amp fuse as close as possible to the magnetic switch. A 10 amp circuit breaker should be used when the load on the circuit is between 12 DCV and 24 DCV. Use 16 gauge or larger wire. DO NOT use a fuse or load that is larger than 10 amperes. Ground
Connect to the cab ground post. The cab ground post is located to the right and below the +24 DCV connection.Data Connections (OHT)
A sure-seal connector is located to the right of center near the bottom of the cabinet. There are seven contacts in the connector. A 6V-3000 Sure-Seal Repair Kit can be used to help make connections to the data wiring. Connections are listed in the following table:
Table 1
Contact No.     Pin or Socket     Circuit Function/ID    
1     Socket     N/A    
2     Pin     Ground /201-BK    
3     Pin     Receive/876-OR    
4     Pin     Transmit/875-BU    
5     Socket     N/A    
6     Plug     N/A    
7     Plug     N/A    Contact Caterpillar for information on the RS-232data that is used with the VIMS.