Ford 800 backhoe hydraulic problem

[TheOldHokie]

It doesn't stall or kill the tractor it just really pulls the engine rpms down

Then it's plumbed as double acting and I dont understand sny of the talk about single acting snd vents. Leave it alone and fix the problem that busted the pump. It's not the grapple plumbing.

If the orifices are causing the engine to load up and you dont like that take them out. The result will be much faster movement and possibly loss of fine control.of the grapple lid. You may like that even less.

Dan

 

[TheOldHokie]

Here are the third function outlets on my loader. Two steel lines coming from the two ports on the valve.

Here are the hoses on the grapple - one for rod end and one for base end of the cylinders. Those are 1/4" hoses and no orifices used. Simple.

 

[Toothster1]

The cylinder has 2 ports on it, one at the base and one at the rod end. As another member posted earlier " the bush hog parts book doesn't actually say anything about it being a one way cylinder " and yes bush hog used this tie rod cylinder with 2 ports. One for lifting and the other as a vent (see picture of vent), yes I plumbed it as a 2 way cylinder. The original post was about why the pump cracked ( and you explained that to me with exceptional knowledge) then the discussion switched to why the added grapple cylinder pulled or dragged the engine down. Shaun had me switch the grapple hydraulic lines to another spool and that spool had the same results (dragged engine down) so Shaun mentioned that the grapple hydraulic lines might have a restriction in them? I brought up that the grapple cylinder was a one way cylinder and that it maybe bypassing fluid past the packings (seals) that is the reason I disassembled the cylinder and posted pictures of the seals. Essentially we were trying to eliminate every possibility of some kind of internal malfunction. Yes I can change the hydraulic lines and quick couplers to 3/8 lines like the rest of the cylinders use for about $250 or I can keep the hydraulic cylinders and the used 1/4" lines that I paid $80 for. This whole grapple project cost me around $275 total for everything metal, fittings, bolts etc. NOT counting my time or the electricity for the welder.

 

[Toothster1]

The orfice that I mentioned was the one on the hydraulic hose fitting (crimped on). That's a nice factory setup! (I'm assuming it's factory)

 

[Toothster1]

Thank you everyone for all the information and the knowledge you have been so helpful with this matter, I just didn't want to destroy another hydraulic pump. Thank you again and may God bless you all. Chris

 

[TheOldHokie]

The cylinder has 2 ports on it, one at the base and one at the rod end. As another member posted earlier " the bush hog parts book doesn't actually say anything about it being a one way cylinder " and yes bush hog used this tie rod cylinder with 2 ports. One for lifting and the other as a vent (see picture of vent), yes I plumbed it as a 2 way cylinder. The original post was about why the pump cracked ( and you explained that to me with exceptional knowledge) then the discussion switched to why the added grapple cylinder pulled or dragged the engine down. Shaun had me switch the grapple hydraulic lines to another spool and that spool had the same results (dragged engine down) so Shaun mentioned that the grapple hydraulic lines might have a restriction in them? I brought up that the grapple cylinder was a one way cylinder and that it maybe bypassing fluid past the packings (seals) that is the reason I disassembled the cylinder and posted pictures of the seals. Essentially we were trying to eliminate every possibility of some kind of internal malfunction. Yes I can change the hydraulic lines and quick couplers to 3/8 lines like the rest of the cylinders use for about $250 or I can keep the hydraulic cylinders and the used 1/4" lines that I paid $80 for. This whole grapple project cost me around $275 total for everything metal, fittings, bolts etc. NOT counting my time or the electricity for the welder.

Let me try one more time.

There is no need to increase line size or delete the orifices. It's a distraction and total nothing burger.