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Doosan heavy-duty machines are renowned for their exceptional performance and durability in various industries. To ensure optimal functioning, regular maintenance is crucial. One vital aspect of maintenance is the calibration of the Variable Back-Off (VBO) system, which requires a thorough pump EPPR valve check. In this article, we will guide you through the step-by-step process of conducting this essential inspection.
Preparations:
Doosan Data Monitoring System DMS-5 DMS-3 Free Download
Doosan Diagnostic Tool
Pump EPPR valve check
*Calibration judgement
3.1. Measure the input & output current of the pump EPPR valve in certain condition
Ex. DX350LC-7, Normal outputs of pump EPPR valve (Please refer the shop manual to check the exact value
on each model)
Not in operation: 300
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Tags: cat heavy-duty
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