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CHASSIS AR 2278302 - Caterpillar

2278302 CHASSIS AR Caterpillar parts 627G CHASSIS
Alternative (cross code) number:
Caterpillar 2278302 CHASSIS AR

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Compatible equipment models: 2278302:

WHEEL TRACTOR  627G   Caterpillar
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Wiring Harness
CAESultra has four wiring harnesses as follows:CAESultra main harness - Connects the CPM and CAES display module (CDM)Machine power harness - Connects machine +Battery, ground, and the key switch RUN terminal to the CAESultra main harnessRadio harness - Connects the on-board radio and the GPS receiverGPS antenna cable - connects the GPS antenna to the GPS receiver. The GPS antenna cable is a low loss coaxial cable with n-type connectorsRadio Harness
The radio harness connects the radio to the CPM as shown in Illustration 1.
Illustration 1 g01175723
CAESultra Main Harness
The CAESultra main harness connects the GPS receiver and the CDM. The harness also provides connections that enable the data link to connect to the Caterpillar Electronic Technician (Cat ET). The cable connects to a power source, either directly from the machine or through an Uninterruptible Power Supply (UPS). Illustration 2 shows the CAESultra wiring diagram that is used for the CD1040. Illustration 3 shows the wiring diagram that is used for Navigator displays.
Illustration 2 g01175587
Wiring diagram for 1040 display connections
Illustration 3 g01202492
Wiring diagram for Navigator display connectionsMachine Interconnect Harness
The machine interconnect harness is dependent on the power source for the machine. On an AC powered Cable Shovel, an Uninterruptible Power Supply (UPS) is utilized to convert and condition CAESultra power. On a combustion powered machine with batteries, CAESultra connects to the existing machine power. This connection is before the Run relay. The connection provides power to the CAESultra machine harness. A connection after the relay provides the key switch input to start CAESultra. Illustration 4 shows both scenarios.
Illustration 4 g01175708
Machine interconnect harnessWiring Diagram for the Dual GPS Antenna Excavator System
Illustration 5 shows the wiring layout for the Dual GPS Antenna Excavator system. The wiring layout shows all of the harnesses that are used in order to connect the various components in the system. Reference: For system installation instructions, refer to Special Instruction, REHS2076, "CAES Installation for Excavators".
Illustration 5 g01175716
Wiring layout for Dual GPS Antenna Excavator system

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