794 AC Off-Highway Truck Caterpillar

Electric Cable - Check - High Voltage Harness

Usage:

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The Power Train Electric Drive System will contain hazardous voltage levels during machine operation and for a short period of time after engine shutdown.
Do not remove any covers that will expose energized high voltage electrical components while the engine is operating.
Any type of maintenance on the following components can only be performed after the Power Train Electrical System Service Shutdown procedure has been followed:

High voltage compartments in the inverter cabinet
The rear axle housing that contains the electric drive traction motors
The generator
The retarding resistor grid, the grid blower motor and the grid system cabling
The excitation field regulator
The high voltage cables and connection enclosures

Failure to follow these instructions could result in personal injury or death.

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When it is necessary to work under the machine with the body (bed) raised, attach the body (bed) retaining cables to the rear tow points. Install the rear tow point pins through the ends of the retaining cables.

Failure to properly secure the body (bed) may result in personal injury or death.

Secure the dump body in the fully raised position and prepare the machine for maintenance. Shut down and discharge the high voltage electrical system. Refer to Operation and Maintenance Manual, "Prepare the Machine for Maintenance".
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Illustration 1 g03663669

(1) Drive train cables

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Illustration 2 g03663671

(2) Electric retarder cables
Remove the tread plate cover to inspect the high voltage cables.
Visually inspect the high voltage cables and the high voltage electrical harnesses for any of the following conditions:
- Debris on the cables or debris between the cables
- Missing hangers or spacers in the harness bundle
- Damaged hangers or spacers in the harness bundle
- Damage to the cables
- Damage to the cable insulation
- Rubbing, pinching, or kinking of the cables
If any of the above conditions exist, contact your Cat dealer.
Remove the truck body retaining cable and lower the body.