780 case hydraulix

trak · Nov 19, 2016

brought home a 780 recently,, rebuilt a lift cycl. and one on the hoe. needs the two outriggers rebuilt yet,, they are bad.. Question, seems you have to be lifting the front bucket for the backhoe to raise,, or pretty much do anything. The swing works ok, the outriggers seem to work ok. Im wondering if the power beyond may have junk in it? seems to put tons of pressure on the valve body for the loader, as it is wanting to leak. Looks like the main pressure goes into the backhoe valve body,, and halfway through that looks like the supply for the loader.. any ideas where to begin? what looks like it might be the power beyond to me,, has an allan head? thanx, Steve

AJ. · Nov 19, 2016

I would be checking the power beyond before anything else as the oil seem to be escaping into the loader valve and when you pull a lever you block it from returning to the reservoir and it is forced to move the backhoe functions.
AJ

780 case hydraulix

trak

Member

AJ.

Well-known Member

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