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hunter321 
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 Topic: Wd45 hydraulics
Posted: 24 Jun 2022 at 4:10pm |
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I recently rebuilt the loader cylinders on my wd45 and I went to use it and the right cylinder started leaking from the plug at the top of cylinder. Before the problem was bad seals but I just replaced then. Why would It leak.
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steve(ill)
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Posted: 24 Jun 2022 at 4:38pm |
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It should be a "one way" cylinder.. pressure up and float down.. The "plug" on the top should be a vent to let the air out at the top of the cylinder... If oil comes out the top, then the seals / rings on the piston were damaged / cut..... or the cylinder pipe is pitted inside.
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steve(ill)
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Posted: 24 Jun 2022 at 4:42pm |
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I dont know what seal / packing kit you used... Lets say the GROOVE in the piston was 1 inch wide and you put in 3/4 inches of seals / rings/ packing... If the seals / rings are allowed to FLOP around in the GROOVE ( not wide enough to fill the groove TIGHT), then that could cause a leak............ sometimes the kit contains a couple slim rings to add to the seals/ packing to keep things SNUG in the groove.
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hunter321
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Posted: 24 Jun 2022 at 5:00pm |
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The seals where tight fit when I installed them
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MACK
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Posted: 24 Jun 2022 at 9:39pm |
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Did you tighten the plug and it still leaked? Replacing seals should not cause plug to leak. MACK
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hunter321
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Posted: 24 Jun 2022 at 11:25pm |
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I completely forgot to put the plug back
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hunter321
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Posted: 30 Jun 2022 at 12:50pm |
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I reinstalled the plug but it still leaks out 5he hole in the plug
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steve(ill)
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Posted: 30 Jun 2022 at 1:53pm |
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what does this "PLUG" do " Is it a vent/ air breather on the dead end of the cylinder ?
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hunter321
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Posted: 30 Jun 2022 at 2:13pm |
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It's. Vent
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hunter321
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Posted: 30 Jun 2022 at 2:35pm |
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Should I get a different cylinder
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steve(ill)
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Posted: 30 Jun 2022 at 2:49pm |
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if there is oil on the EMPTY end of the cylinder... then it is leaking past the PISTON PACKING... Either the seal / o-ring/ wiper was damaged during install, or the inside of the cylinder is pitted / corroded and caused the new seals to leak.
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hunter321
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Posted: 30 Jun 2022 at 3:01pm |
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So what do I do? I don't have money for another set of seals. I have other cylinders
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hunter321
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Posted: 30 Jun 2022 at 3:12pm |
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If the seal are good and the cylinder is pitted how would I fix it
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steve(ill)
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Posted: 30 Jun 2022 at 3:13pm |
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you can put 100 psi air into the oil port of an old cylinder.... let it move the rod all the way open... and then check the VENT PLUG and see if air is leaking out.... That tells you the condition of the piston seals...... cylinder should not be dry... If it has a little OLD OIL that is fine... If it is completely dry, you should pour a couple spoons full of oil in the hole first.
Edited by steve(ill) - 30 Jun 2022 at 3:14pm
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DrAllis
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Posted: 30 Jun 2022 at 3:37pm |
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Many one-way cylinders on old loaders never even had a piston in them. The V-packing seals are in the head of the barrel and just seal around the rod. So, which kind of cylinder is it ??? Does it have a piston?? Or just "V"-packing around the rod at the end of the barrel ???
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hunter321
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Posted: 30 Jun 2022 at 6:59pm |
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So if air is still leaking when fully extended the seals are bad?
And the cylinders have hockey puck looking things at the bottom where the seals go
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DrAllis
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Posted: 30 Jun 2022 at 7:46pm |
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So, you have a piston and the seals run inside and SEAL against the barrel inside wall. Bad rough barrels or cut seals is why they would leak oil. Don't worry about air, worry about oil leakage.
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steve(ill)
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Posted: 30 Jun 2022 at 8:11pm |
I just ment if he had a couple used cylinders he could TEST them before he installed.. Have an idea if they are any good or not..
If you have a minor leak, you could removed the VENT and connect a small 3/8 hose or so and run it back to the oil tank ( transmission fill plug or ??) ..... then any "leak by" would go back to storage and not on the ground... Not a "FIX", but if you dont want to spend any more time or money right now, it would be usable.
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Like them all, but love the "B"s.
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Dakota Dave
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Posted: 30 Jun 2022 at 10:45pm |
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You never said if it was an allis loader or not allis loaders made by freeman don't have a vent or even a piston in them they'd displacement cylinders with just chevron seals around the shaft. The very small plug is a bleeder port and requires a seal on it.
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hunter321
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Posted: 01 Jul 2022 at 12:05pm |
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It is not a allis Chalmers loader
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hunter321
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Posted: 02 Jul 2022 at 1:41pm |
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Now that I think about it there was no o ring on the shaft under the piston. Could that be the problem
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hunter321
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Posted: 02 Jul 2022 at 2:11pm |
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Would blue devil hydraulic oil leak stop be something to try
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DrAllis
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Posted: 02 Jul 2022 at 3:17pm |
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The piston should be sealed to the rod with something, like an Oring. The other cylinder doesn't leak ??
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hunter321
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Posted: 02 Jul 2022 at 4:50pm |
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No the other cylinder is perfectly fine and does not leak
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DrAllis
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Posted: 02 Jul 2022 at 4:54pm |
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But, did you have it apart too ??
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hunter321
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Posted: 02 Jul 2022 at 5:03pm |
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Yes I resealed both cylinders
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DrAllis
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Posted: 02 Jul 2022 at 5:16pm |
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Looks like you've got a problem with the leaker. If it leaked before, either there's a problem that wasn't addressed or the new seals aren't working for some reason. It probably isn't going to fix itself.
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hunter321
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Posted: 02 Jul 2022 at 5:31pm |
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So what do I do. I have to take it to fair in a week for 4h
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steve(ill)
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Posted: 02 Jul 2022 at 6:04pm |
--you could plug the vent.. but then the boom might stay in one position... or barely work
--you could install a SPARE cylinder if you have a good one ( air test for leaks)
--you could put a 3/8 hose in place of the "vent" and run the hose back to the hydraulic case fill plug.
Edited by steve(ill) - 02 Jul 2022 at 6:05pm
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Like them all, but love the "B"s.
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hunter321
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Posted: 02 Jul 2022 at 7:06pm |
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Ok thanks. I'll temporarily fix it for fair. How should I permanently fix after fair
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