312C, 315C, 318C, 319C, 320C, 321C, 322C, 325C, 330C and M325C Excavators and 325C MHPU and 330C MHPU Mobile Hydraulic Power Units Engine and Pump Control – V2 – Warning “Return Filter Is Clogged” Is Displayed – Troubleshoot



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“Warning “Return Filter Is Clogged” Is Abnormal” ( 312C And 315C)



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“Warning “Return Filter Is Clogged” Is Abnormal” ( 318C, 319C, 320C, 321C, 322C, 325C, and 330C)



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Diagram for 318C, 319C, 320C series, 321C, 322C, 325C, M325C MH, and 330C

“Check For Open Circuit And +B Short Of Return Filter Switch”



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“Check For Open Ground Short Of Return Filter Switch”



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Schematic Of The Return Filter Switch ( 312C)



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Schematic Of The Return Filter Switch ( 315C)



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Schematic Of The Return Filter Switch ( 319C, 320C, 320C LRR, and 322C)



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Schematic Of The Return Filter Switch ( 318C)



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Schematic Of The Return Filter Switch ( 321C)



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