HUB 2253885 - Caterpillar

Gimbal Mount Installation
Required Tools
Table 25
Part number     Description    
151-0968     Drill    
9U-7330     Digital multimeter    
3S-2093     Tie straps    
6V-6193     Diagonal cutting pliers    
1U-7264     Standard screwdriver    
1U-7267     Phillips screwdriver    
6V-6194     Needle nose pliers    
1U-7319     Flashlight    
140-9944     Terminal kit    Additional Required Components
Table 26
Quantity     Description    
2    
6 mm (0.25 inch) by
25.4000 mm (1.0 inch) machine screws    
2    
6 mm (0.25 inch) nut    
4    
6 mm (0.25 inch) flat washers    
2    
6 mm (0.25 inch) lock washers    
or     Double faced tape for fastening the mounting bracket    Installation procedure
Determine the location for the Messenger display. Mark the location for the Messenger display.
Do not place the Messenger display in a location that would interfere with the safe operation of the vehicle.
The Messenger display is approximately 125 mm (5.0 inch) wide by 76 mm (3.0 inch) high. The depth is approximately 75 mm (3.0 inch).Note: The location of the Messenger display must be within reach of the Messenger wiring harness and data link connector.
Disconnect the vehicle battery.
Locate all the wiring connections. The Messenger display requires a fused key switch for the +battery, battery ground, "+ATA Data Link", and "-ATA Data Link" for proper operation. This connection allows the display to be dimmed automatically with the dash panel lights. The display requires less than 500 mA of power.
The key switched power of the +battery and battery ground should be available in the fuse panel of the cab.
The "+ATA Data Link" and "-ATA Data Link" are located behind the dash data link. A two-pin connector for the data link connection may be supplied by the vehicle manufacturer. Do not confuse the lines for the J1708 ATA Data Link with the lines for the J1922 or the J1939 Data Link.
The connection for the panel dimmer switch should be accessible from behind the dash. The circuit for the panel dimmer switch must be a Pulse Width Modulated (PWM) circuit. Contact the vehicle manufacturer in order to determine the type of dimmer circuit or refer to the wiring schematic for the vehicle for wiring access.Note: The dash data link has the +battery and the battery ground connections available. The +battery may be unswitched. Connect the Messenger display to power from the key switch.
Connect the key switched battery connection to the +battery and to the battery ground of the display. Crimp a terminal from the display connector (+battery) (pin 1) to the key switched battery connection for the +battery. Crimp a terminal from the display connector (battery ground) (pin 2) to the battery ground of the vehicle.
Table 27
Messenger Pinout Specifications    
Pins     Function    
1     + Battery    
2     - Battery    
3     Keyswitch    
4     PWM input    
5     ATA/1708-    
6     ATA/1708+    
7     CAN/J1939 High    
8     CAN/J1939 Low    
Reconnect the vehicle batteries.
Use a multimeter to measure the voltage