| Required Tools | |||
| Tool | Part Number | Part Description | Qty |
| A | 319-1845 | Fixture Tool As | 1 |
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The Power Train Electric Drive System and the Accessory Power System will contain hazardous voltage levels during machine operation and for a period of time after machine shutdown. Do not remove any covers that will expose energized electrical components while the engine is operating. Do not remove any covers that will expose the energized electrical components while the components remain energized following an engine shutdown. Do not perform any type of electrical maintenance on the orange hazardous voltage conductors, the power train components or the accessory power system components while the engine is operating. Do not perform any type of electrical maintenance on the orange hazardous voltage conductors, the power train components or the accessory power system components while the components remain energized following an engine shutdown. Always perform the safe shutdown and de-energizing procedure before performing electrical service on the Power Train Electric Drive System or the Accessory Power System. Failure to follow these instructions could result in personal injury or death. |
| NOTICE |
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The two top compartments on the front of the Inverter Cabinet contain low voltage control components. All of the other compartments in the cabinet contain high voltage components. The "Electrical Shutdown and Voltage Discharge" procedure must be performed before any of the high voltage compartments are entered. |
- Prepare the machine for maintenance. Refer to Operation and Maintenance Manual , "Prepare the Machine for Maintenance".
- Shutdown and de-energizing the machine. Refer to Operation and Maintenance Manual, "Electrical Shutdown and Voltage Discharge".
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Illustration 1 g03794367 - Remove cover assembly (1), cover assembly (2).
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Illustration 2 g03794379 - Remove post assembly (3). Disconnect harness assembly (4) and ground strap (5). Remove bus bars (6).
Note: By using a jumper harness, short the chopper module by connecting the positive lead and negative lead.
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Illustration 3 g03794443 - Remove bolts (7) and bolts (8). Repeat this step for the opposite side.
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Illustration 4 g03794478 - Use Tooling (A) and a suitable lifting device to remove chopper module (9). The weight of chopper module (9) is approximately
131 kg (290 lb) .Note: Ensure that the chopper module is bolted securely to Tooling (A).
Note: Do not remove the cooling unit from the chopper module.
- Install chopper module (9) in the reverse order of removal.
- Perform the power transistor test. Refer to Testing and Adjusting, UENR2267, "Power Transistor - Test" for the correct procedure.