[Charles]

Any tips on testing a piston style pump on one of these? I replaced my vane pump and can't get lift on the 3 point now. So far I've replaced the unloader valve o ring and pulled inspected and replaced the pressure valve. now i suspect whoever rebuilt the pump didn't seal it right...

 

[Iddee]

Have you bled the pump? It will not pump if there is air in it.

 

[Charles]

Hey Bee Catcher, yea I bled the pump with the screw on the side of the pump, thinking now I should have pulled the plug down by the pressure valve too. I'll try more things when I get the new pressure valve in the mail and I can put it all back together...

 

[Iddee]

How about an update. Curious to know what happened.

 

[Charles]

I put it all back together with the new pressure valve but still no lift, I still suspect it's the pump itself but havn't had a chance to tear into it yet. Funny you should ask though, my wife was just hollering at me yesterday that she wants her garage spot back

I'll update when I get a chance to tear that pump apart...

 

[Iddee]

Bleed the pump again. Even Twice. If the pump isn't leaking, I am betting air in the lines.

 

[Iddee]

Did you get it going? How about an update.

 

[Charles]

She's been working without the lift for awhile now, only using the loader. Just rebuilt the carb and she runs like a top. I've thrown the towel in on the lift problem. I can't seem to get it figured out. Going to give the boy's down at the tractor shop a shot at this one...Weather guy say's 4 days of rain coming in but I'm way past due for a mowing!

 

[Iddee]

Open the connection on the pressure side of the pump just a turn or fraction of a turn. Just enough for the fluid to seep out, while the engine is running. I think you will see a bubble of air now and then. Let it seep for 2 or 3 minutes and see if the lift doesn't start rising.

 

[Guest]

Some of those old piston pumps had 2 pipe plugs in the front of the housing, make sure your at the end of the pump (towards the fan) and closest to you. Run a barbed fitting into the threads and some vinyl tubing back to your fill plug. Run it till the air clears out and put the pipe plug back in.

 

[Iddee]

Now that is one I will store in my memory bank. Thanks for posting it. It should save about a week's work and worry after changing a pump.

 

[Charles]

Thanks for the tip Beewildered, and welcome to the forum.

 

[Iddee]

Time for an update, charles...What's happening with the lift?

 

[Charles]

Finally got a chance to work on this, I have the 3 point going up and down now, there's still a problem with the remote hydraulics though. They are remotes that sit on top of the cover under the seat, if I move the remote hydraulic lever even a 1/4 inch off center in either direction then the 3 point stops moving. There's a bleed screw on the front of that remote unit that's getting plenty of oil.

I think I may pull the remotes off (I don't use them) and grab a block off plate from the bone yard...

 

[Iddee]

I still say O-rings on the spool valve are worn or broken. Replace them and look for a chip out of the inside of the housing where the spool slides.

 

[Charles]

Your probably right iddee, I'll have some time to work on it again Saturday, I'll let you know how it goes...