often when lifting the BH boom it out of control drops. I suspect a pressure relief valve in the control body. Any ideas or suggestions and does anyone make an after market relief valve.
Get the WSM for BT1100 it it will show all the details.
You'll need the Serial Number of the BH in order to get the right parts.
You won't find and aftermarket valve for it that's going to fit like the OEM.
Looks like the OEM for the valves pressure relief assemblies are not too expensive.