753 C auxiliary system acting up. Drifting and shuddering issue.

Cruez

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Joined
Apr 29, 2020
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4
Trying to narrow down what may be the issue... This is a '92 model with no BOSS system.
I put on the backhoe attachment over the weekend. (there are also outriggers on the rear of the machine also).
One issue it has had for a while was both rear outriggers would slowly extend when the auxiliary was on and other parts were being used....and would occasionally blow a fuse for the aux system. I was watching them yesterday while operating various controls on the hoe and you could see both rear outriggers extending when using other controls on the backhoe. It sounds to me that there is fluid somehow backfeeding since both outriggers were moving at the same time (versus an electrical problem would seem to move each one independently) Both hand controls and buttons work as they should...

The new problem, that I think is separate, is that one direction on most of the controls of the backhoe is very weak and shuddering when being moved. The rest of the hydraulic system is strong and working fine.
 
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