Hi -
I've got a B3350SU with just over 1k hours on it and a 3rd function valve on the loader.
I was using the grapple yesterday to pick up some branches and suddenly the loader arms stopped moving up at their normal speed. They do move up, but at maybe 1/10th the normal speed. All of the other hyd functions seem fine: head tilt on the loader, grapple open/close, 3ph up/down. It's just the up on the arms.
I've checked hyd oil levels and they seem fine - dipstick near the 3ph shows oil at about exactly the halfway point between the two marks.
I found a number of threads (here and elsewhere) with similar symptoms that turned out to be loose or failed connections. I've checked all of the connections out on the loader arms and they're all snug, no signs of any leak. I also removed, inspected, and re-attached the quick connects under the acceleration pedal (where the hoses that route along the arms connect) that control the lower/raise function - they also seem fine.
In the course of doing this I stumbled into something that I think might be a huge clue for somebody who understands hydraulics better than I do (not saying much by itself
). While checking the quick-connects, I ended up draining the oil from yellow-tagged hose that connects to the pipe running along the arms (it feeds the arm raise/lower cylinders). When I re-connected everything and started the tractor up, it raised at it's normal speed, but just once and then it was back to being very very slow (maybe a little bit faster than yesterday but still way slower than it should be). I don't understand hydraulic troubleshooting well enough to work out what that points to, but like I say it certainly seems like a clue.
Appreciate any thoughts or suggestions on what to try next. I've rented a chipper for next weekend and I'm gonna have a rough time of it if I have to move all that brush around by hand
thanks,
Josh
I've got a B3350SU with just over 1k hours on it and a 3rd function valve on the loader.
I was using the grapple yesterday to pick up some branches and suddenly the loader arms stopped moving up at their normal speed. They do move up, but at maybe 1/10th the normal speed. All of the other hyd functions seem fine: head tilt on the loader, grapple open/close, 3ph up/down. It's just the up on the arms.
I've checked hyd oil levels and they seem fine - dipstick near the 3ph shows oil at about exactly the halfway point between the two marks.
I found a number of threads (here and elsewhere) with similar symptoms that turned out to be loose or failed connections. I've checked all of the connections out on the loader arms and they're all snug, no signs of any leak. I also removed, inspected, and re-attached the quick connects under the acceleration pedal (where the hoses that route along the arms connect) that control the lower/raise function - they also seem fine.
In the course of doing this I stumbled into something that I think might be a huge clue for somebody who understands hydraulics better than I do (not saying much by itself
Appreciate any thoughts or suggestions on what to try next. I've rented a chipper for next weekend and I'm gonna have a rough time of it if I have to move all that brush around by hand
thanks,
Josh