Snow Equipment Owning/Operating Meyer E47 pump .. how to best bleed angle cylinders?

[tmajor]

I've got a Meyer plow with an E47 pump. While I've never had problems before, this year, I do!

After I angle the plow to the left, against the stop, it won't angle right. I've found, that the right cylinder (pushes blade to left angle) continues to have pressure on it. The only way, which I can relieve the pressure is to open the line in one manner or another. I've changed the quick coupling and O-rings on the "C" cartridge. The plow will angle normally, unless I run it to the left stop. There does seem to be a slight attempt for the plow to go left, when I hit the switch for right, which I think may be caused by the "C" valve opening and allowing the air to kick it left, briefly.

My guess, at this point, is that there is air in the right cylinder.

If nobody, thinks otherwise, what is the best way to bleed the cylinder.

 

[leonz]

I've got a Meyer plow with an E47 pump. While I've never had problems before, this year, I do!

After I angle the plow to the left, against the stop, it won't angle right. I've found, that the right cylinder (pushes blade to left angle) continues to have pressure on it. The only way, which I can relieve the pressure is to open the line in one manner or another. I've changed the quick coupling and O-rings on the "C" cartridge. The plow will angle normally, unless I run it to the left stop. There does seem to be a slight attempt for the plow to go left, when I hit the switch for right, which I think may be caused by the "C" valve opening and allowing the air to kick it left, briefly.

My guess, at this point, is that there is air in the right cylinder.

If nobody, thinks otherwise, what is the best way to bleed the cylinder.

Is the reservoir full?????????????????????????

If the solenoids are working properly and the reservoir is full and you have ruled them(the solenoids) out entirely;
disconnect the right cylinder completely with it fully extended and add oil to the cylinder if it is empty by removing the hose fitting then reistall the fitting and then reinstall it on the plow and try it again if it does not work the solenoid or both solenoids are the problem.

 

[tmajor]

Reservoir is full. I removed the coupling, put the end of the line in the oil bottle and worked the cylinder back and forth manually, but that didn't seem to do the trick.

I'll try manually filling the cylinder tomorrow ... with it standing vertically.

Thanks.

 

[crazyal]

If it was air it would compress until enough oil got into the cylinder to make it move. It sounds like the angle valve is getting stuck or your relief valve kicks in and stays open. After you go all the way to the left and hit the stop can you raise the blade? I'm assuming that the relief valve is common to both valves so it would be a way to test the relief valve. Other than that I would suggest rebuilding the angle valve.

 

[samandmax]

Check C solenoid for magneism with screwdriver. Have someone hold togle switch to the right. Do you hear motor noise when trying to angle right?

 

[tmajor]

Check C solenoid for magneism with screwdriver. Have someone hold togle switch to the right. Do you hear motor noise when trying to angle right?

Have magnetism on "C" solenoid .. motor runs.

I think, the sign, that the right cylinder has air, is that there is pressure in the line, with nothing running >> the quick connect can't be released until the line is opened and the pressure is released.

I'll post an update, after I've addressed that issue.

 

[srs]

the quick connect can't be released until the line is opened and the pressure is released.

Can't you just take a wrench to the hose end and loosen it enough until some fluid seeps out along with any trapped air?

 

[tmajor]

Can't you just take a wrench to the hose end and loosen it enough until some fluid seeps out along with any trapped air?

Yes, that will allow for the blade to angle right, but as soon as I angle left, to the stops, it freezes up again. The air doesn't seem to escape .. just fluid.

 

[bkc]

If your only getting fluid out when you crack the line chances are there isnt any air.
I have changed many angle cylinders and have only ever had to angle blade back and forth a few times to bleed air. I will bet there is something stuck in the valve. Just because the solinoid energizes doesnt mean its pulling open the valve. You may need to dig alittle deeper than the solinoid.

Also, (Not 100% sure) but I think when trying to angle, two valves need to operate not just one. It has been a long time since working on plow pumps.

Brian

 

[samandmax]

If you can, change the C solenoid, even if you swap with a friends whose plow works just to eliminate the solenoid.

 

[tmajor]

I'm not having any luck with getting any more air out of the cylinders.

My current direction is toward the switch. I think, the pump may start to run a brief second, before the "C" solenoid energizes. ?? I'll report back.

 

[tmajor]

Well, my friends, I've got good news and bad.

The good news: it's working!
The bad news: I don't know why, for sure.

I took the switch out, so that I could see the back .. everything looked OK, which didn't surprise me, because , I thought it was just a "lazy switch". I jumpered the battery and "C" wires together on the back of the switch and the mid-position, right angle initiation looked smoother (no kick to the left). I ran it all the way to the left without the jumper, where it froze. Re-jumpered the terminals and it came off the stop and angled to the right. Tried it without the jumper ... at one point, it would only angle left! I tightened the spade connectors and it seemed to work.

So, as near as I can determine, it appears to have been associated with the switch and/or connections.

I'll try it again. later .. hopefully, it will continue to work.

 

[samandmax]

Congrats! A little aggravation but not a expensive repair.:thumbsup:

 

[tmajor]

I thought, I'd post a few of the things, which I learned, while doing my troubleshooting on the A-frame plow and the Meyer E47 pump. Some, I may have known, but forgot, ..until ..

1) Replacement O-ring kits for the solenoid cartridges can vary in price from $2.95 - $34.00 .. for the same cartridge kit! I doubt that the O-rings from The $34 kit are much better than the $2.98 ones.

2) If you are trying to purge the angle cylinders, the lift cylinder should be all of the way down and in the float position, plow level. .. or the air will be directed toward the angle cylinders, while raising the plow. (This is what I was told by a pro.)

3) If the quick connect coupling has pressure on it and can't be released, as mine did, the easiest, cleanest way to equalize the pressure, is to disconnect the pump power and then apply power to the solenoid, which will allow the pressure to equalize.

4) If the quick connect couplers can be released, hooking the left and right cylinder couplers together, will allow the plow to be angled manually.

5) A hair dryer will warm and make the plastic handles on the switches much easier to remove.

6) If you are trying to compress a cylinder by hand, it will eventually let loose and spray you with oil.

7) And one of the most important! If the plow kicks to the left, when initiating it to angle right, the pump might be starting before the "C" valve opens!

 

[bkc]

If you are trying to compress a cylinder by hand, it will eventually let loose and spray you with oil.

Hahaha...Yeah i have done that one myself, makes a big mess.
Glad you got it sorted.

Brian