Topic: Re: Hydraulic pump getting weak?? Liebherr 932 Excavator|
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I'm not sure if the Liebherr machines sold in the US are the same as what is sold here in the UK,the machines here have a couple of different work modes and a heavy lift,in the heavy lift mode the flow from the pump is reduced,the hydraulics slow up and the lifting capcity increases,as far as I remember there is a switch on the panel with a heavy weight symbol,when it is lit up heavy lift mode is engaged,if you have a handbook look up the different work modes,in the right digging mode when a lever is touched there is a rapid responce fom the engine tone,if you are not getting that response in digging mode it could be the main regulator valve has an issue,the pumps are fairly robust and though I have changed one or two due to other things causing the failure they are reliable.
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