Removing B6200E 3 Point Hitch Piston From Cylinder

[PaulinBft]

I'm trying to replace a leaking seal on my 3 point hitch piston (hitch would raise and quickly leak down) and I don't know how to get it out of the cylinder.

It was suggested to use a magnet to pull it out but I don't have one strong enough. Also suggested was pulling it out with suction but I haven't had any success. And I really don't want to open the case for something that seems it should be so simple. I tried using the pump (using starter motor only and the cover bolted on loosely) to push it out but that just sprayed oil all over creation. Surely someone has done this.

All else failing I'm considering drilling into the top of the piston, tapping it and putting in a screw to pull it out. I have reservations about doing that though, but I'm stymied. I'm hoping someone on this forum has a better way to get the piston out. Any suggestions or advice?

Thanks,
Paul

 

[InTheWoods]

compressed air?

 

[PaulinBft]

That would certainly be cleaner. And when I get the system drained I'll try it. A friend had suggested air and my thoughts were that if fluid leaked past the piston easily enough to relieve the pressure air will be less likely to pressurize the cylinder. Here's hoping that it doesn't. Thanks for the suggestion.

 

[TheOldHokie]

That would certainly be cleaner. And when I get the system drained I'll try it. A friend had suggested air and my thoughts were that if fluid leaked past the piston easily enough to relieve the pressure air will be less likely to pressurize the cylinder. Here's hoping that it doesn't. Thanks for the suggestion.

Shop air will pop it right out.

Dan

 

[North Idaho Wolfman]

Ok guys someone explain to me how in imaginarium land is he going to put air to it to pop it out?

And If anyone suggests pressurizing the whole sump I will throw them off the forum!

 

[North Idaho Wolfman]

Remove the lift rods so that you have just the lift arms attached like in this picture.
Then push the piston all the way down into the cylinder.
Clean the cylinder bore with a fine scotch bright, making sure there is no ridge, if there is you will need to cylinder hone it to get rid of the ridge.
Then lightly oil the walls, push the arms down, repeat pushing the piston all the way in, do this several times to lube the piston seals./
Now push it all the way down, with the lift arms up smack one of them with a rubber mallet caring threw till it stops.
If you're lucky the piston will now be out enough to grab it.
DO NOT force the arms down any further than where they naturally stop.

 

[North Idaho Wolfman]

Shop air will pop it right out.

Dan

I'm going to give you a pass on this one, as your probably not thinking clearly, over medicated, or over tired.

 

[InTheWoods]

WSM for the B7510 is a little light on detail. I've no idea of the similarity to the B6200.

 

[North Idaho Wolfman]

WSM for the B7510 is a little light on detail. I've no idea of the similarity to the B6200.

View attachment 124214

He said without removing the case.

I'll give you a pass on the air comment also, as yes when you have a sealed top cylinder like a b7510, that is how you would have to get it out.

No the B6200 does not have a port inside like that.
It's on the outside.
The piston on a B6200 does not come out on the inside it comes out the outside.
It has a cover over the piston that you remove.

 

[TheOldHokie]

He said without removing the case.

I'll give you a pass on the air comment also, as yes when you have a sealed top cylinder like a b7510, that is how you would have to get it out.

No the B6200 does not have a port inside like that.
It's on the outside.
The piston on a B6200 does not come out on the inside it comes out the outside.
It has a cover over the piston that you remove.

Good point. What was I (not) thinking

Dan

 

[GeoHorn]

Ok guys someone explain to me how in imaginarium land is he going to put air to it to pop it out?

And If anyone suggests pressurizing the whole sump I will throw them off the forum!

 

[InTheWoods]

...I'll give you a pass on the air comment also...

Dang. I post here for the abuse, not forgiveness...

 

[North Idaho Wolfman]

Dang. I post here for the abuse, not forgiveness...

Awww come on, I give both equally!

 

[Dustyx2]

I would caution anyone considering removing a rod/piston from a cylinder with compressed air to remember that air is compressible. I know of a John Deere backhoe cylinder that was disassembled using air. That rod impaled a metal file cabinet about 20' from the cylinder tube.

 

[johndeerebones]

I would caution anyone considering removing a rod/piston from a cylinder with compressed air to remember that air is compressible. I know of a John Deere backhoe cylinder that was disassembled using air. That rod impaled a metal file cabinet about 20' from the cylinder tube.

Dang had to be stuck, shop aired tons of rock-shafts on Deeres. From 1930s to current, never did that. If possible, I'd point at the floor. Never used tons of pressure though. In my mind if much air is required, stop, something was up.

 

[Dustyx2]

Dang had to be stuck, shop aired tons of rock-shafts on Deeres. From 1930s to current, never did that. If possible, I'd point at the floor. Never used tons of pressure though. In my mind if much air is required, stop, something was up.

That happened at the Road and Bridge that I went to work for a few months before I started. Would have been about 1976. I heard the story and saw the file cabinet. I would have to imagine the rod had to have been out a ways to build enough volume to launch it that far. The break table, chairs, and a barrel stove were between the cylinder and the file cabinet. Lucky nobody got hurt.

 

[PaulinBft]

Abuse and anecdotes aside, Wolfman's technique of using the hitch arms to push the piston up was the ticket. Cylinder bore was smooth and no ridge to cut down. Pushed piston down and up a few. times after which dropping the arms quickly created enough momentum for the piston top to stop just clear of the cylinder. Now with something to hold onto a little pulling and twisting got it out. No file cabinets (or humans) were injured in the process.

Thanks everyone for the advice and entertainment.

Paul