Two questions:
1. I use a post driver on my 7520, and it works ok. My problem is that the top link (bar) of the 3PH has play in it, so when I lower the post driver and level (plumb) the ram, everything looks good. However, when I drop the ram, it's inertia actually lifts the driver slightly and makes it strike at an angle, not directly vertical. The play is where the top bar of the 3PH attaches to the tractor, at the draft control. I have the draft lever all the way forward. I compensate by tipping the driver away from the tractor so it strikes vertical when driving. Is there a better way to handle this?
2. Sometimes when hooking up my backhoe, I have a problem getting the hydraulic return line to open. I plug the quick connect in, and it looks good, but when I hit the lever to engage the remote valves, I hear the engine strain under load and I know that the connect isn't opening. I'm pretty sure it always happens on the return line, because I can lift the backhoe with the side-arms, but can't put them back down. If I take the quick connect out and try to push the tip in by hand, it's impossible, as if it's under pressure. I can, however, put it against a flat piece of metal and strike the back of the fitting with a hammer and cause oil to squirt everywhere. I did this today, plugged it back in, and then it worked fine. What's going on here? Is there anything I can do to fix this?
Thanks!
1. I use a post driver on my 7520, and it works ok. My problem is that the top link (bar) of the 3PH has play in it, so when I lower the post driver and level (plumb) the ram, everything looks good. However, when I drop the ram, it's inertia actually lifts the driver slightly and makes it strike at an angle, not directly vertical. The play is where the top bar of the 3PH attaches to the tractor, at the draft control. I have the draft lever all the way forward. I compensate by tipping the driver away from the tractor so it strikes vertical when driving. Is there a better way to handle this?
2. Sometimes when hooking up my backhoe, I have a problem getting the hydraulic return line to open. I plug the quick connect in, and it looks good, but when I hit the lever to engage the remote valves, I hear the engine strain under load and I know that the connect isn't opening. I'm pretty sure it always happens on the return line, because I can lift the backhoe with the side-arms, but can't put them back down. If I take the quick connect out and try to push the tip in by hand, it's impossible, as if it's under pressure. I can, however, put it against a flat piece of metal and strike the back of the fitting with a hammer and cause oil to squirt everywhere. I did this today, plugged it back in, and then it worked fine. What's going on here? Is there anything I can do to fix this?
Thanks!