tyman00
New member
- Joined
- Nov 8, 2019
- Messages
- 2
I have a early 80's 440 (pre 440b days) with auxiliary hydraulics. Currently the hydraulics are only used for a snowplow with a double acting cylinder for angling the plow. It works great.
I picked up a used rotary broom that was once PTO driven and now has a hydraulic motor that is rated for 9gpm. The 440 is a bit underpowered, but I'll take it easy on it. I built a temporary mount and hooked up the hydraulics and it works pretty good. Researching the motor shows it will reverse but it does not when I attempt to reverse the hydraulics. I will admit I do not have a strong understanding of hydraulic systems so I know I am missing something either about the Bobcat system or on the attachment. I did reverse the hoses on the downstream side of the tee/checkvalve manifold (shown below) and the broom did rotate in reverse.
When I try to reverse the system it behaves as if I have maxed the full extension or retraction of the plow's hydraulic cylinder. I do notice the hoses move as well.
I don't need reverse, but curiosity is getting the best of me. If I wanted to reverse the motor do I need a dual crossover hydraulic relief valve in place of the H manifold with the one way check valve?
I picked up a used rotary broom that was once PTO driven and now has a hydraulic motor that is rated for 9gpm. The 440 is a bit underpowered, but I'll take it easy on it. I built a temporary mount and hooked up the hydraulics and it works pretty good. Researching the motor shows it will reverse but it does not when I attempt to reverse the hydraulics. I will admit I do not have a strong understanding of hydraulic systems so I know I am missing something either about the Bobcat system or on the attachment. I did reverse the hoses on the downstream side of the tee/checkvalve manifold (shown below) and the broom did rotate in reverse.
When I try to reverse the system it behaves as if I have maxed the full extension or retraction of the plow's hydraulic cylinder. I do notice the hoses move as well.
I don't need reverse, but curiosity is getting the best of me. If I wanted to reverse the motor do I need a dual crossover hydraulic relief valve in place of the H manifold with the one way check valve?