When my BH77 arrived in 2019 I was putting it through its checkout ride in an open area. All of a sudden, an outrigger would retract and I thought I had broken something. Nope. A little while later....same thing. Now paying attention, I found a combined motion of swinging the boom to the right and up would cause the rubber boot to activate the stabilizer lever and the tractor would drop on that side. Same combination on the dipper stick would do the same on the other side. I showed the dealer and they offered to take it to the shop and see what they could do. But that would take a while.
In a couple of hours, I made two new stabilizer levers that were re shaped to avoid those conditions. Problem solved. The control valves are just too close together with no room for error in the making and positioning of the control handles.
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Originals on top. Soaking the originals in boiling water allowed the rubber tips to slide off and get placed on the new handles.....after they were painted black, of course.
Below is the original configuration. You can see how close the rubber boot is to the outrigger levers even with the control handles sitting in the "neutral" position.
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