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VALVE A 0543547 - Caterpillar



0543547 VALVE A Caterpillar parts VALVE
Rating:
46
Alternative (cross code) number:
CA0543547
054-3547
0543547
Caterpillar 0543547 VALVE A
Weight: 0.20 pounds 0 kg.

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Test Overview
The purpose of this test is to determine if a motor or generator phase has a higher resistance than it should. A phase that has breaks in some of the conductor wire may have enough difference in resistance compared to the other phases, that it could cause a phase imbalance, high current, de-saturation, or other event.
The Power Train Electric Drive 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 or the power train components while the engine is operating.Do not perform any type of electrical maintenance on the orange hazardous voltage conductors or the power train 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.Failure to follow these instructions could result in personal injury or death.
In order to avoid the build up of hazardous live voltages on the exposed surfaces, all grounding wires must be properly connected at all times during engine operation.Any disconnected grounding wires (including the grounding bond wires, the conductor shield wires, the power inverter grounding straps and the component housing grounding straps) must be properly reconnected before the engine is started.Failure to follow these instructions could result in personal injury or death.
Required Tools
The 430-8927 Meter is used to test the conductors and the windings in the motor.Test Preparation
Table 1
Test Preparation Values Results
1. Safe Shutdown Procedure
This procedure must be performed before service is performed in an area that is in the vicinity of Power Train hazardous voltage components and conductors to ensure that the DC power bus voltage has discharged properly.
Reference: Refer to the Troubleshooting, "Electrical Maintenance Guidelines" section of this manual. Perform the "Safe Shutdown Procedure for Electric Drive Wheel Loaders" before proceeding with this procedure. The Safe Shutdown Procedure for Electric Drive Wheel Loaders has been performed. DC voltage has been discharged to less than 50.0 VDC. OK: The Safe Shutdown Procedure for Electric Drive Wheel Loaders has been performed. The monitoring system display and the hazardous voltage indicator indicate that DC voltage is less than 50 VDC. The hazardous voltage has been properly discharged. The power train system for the machine can now be serviced.
NOT OK: The DC voltage is greater than 50.0 VDC on the Monitoring System Display or Hazardous Voltage Present Indicator.
REPAIR: Wait for at least 10 minutes. Repeat the “Safe Shutdown Procedure for Electric Drive Wheel Loaders”. If the voltage is greater than 50.0 VDC, voltage is still present in the system. Measure the voltage between ground and the conductors with a multimeter. Verify that there is less than 50.0 VDC present between all exposed bus contacts before any other


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