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Discussion Forum

Pitted hydraulic rams

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Author 
rod

03-08-2002 18:55:52




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Hi all I bought an old Fisher Plow blade that has one rusted and pitted ram I am wondering if this can be fixed the seals need to be replaced. This is the cylinder that lifts the blade not the angle one. Could I polish it with emery cloth and fill pits with epoxy trying as usual to do this as cheap as possible.
regards
rod




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Franz

03-08-2002 21:19:58




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 Re: Pitted hydraulic rams in reply to rod, 03-08-2002 18:55:52  
That rod isn't really going to be effected by pitting. There is no oil operating on that side of the piston. You can polish it up and coat it with some grease to prevent future rust pitting, or you can paint it after you clean it.
It will eventually shorten the life of the wiper at the end of the piston, but you probably won't notice.



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BlueLite

03-14-2002 05:21:21




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 Re: Re: Pitted hydraulic rams in reply to Franz, 03-08-2002 21:19:58  
Submitted same post a while back.

Don't use epoxy they said, could come off and
bugger up the works inside. Like you say use corundum (grey) crocus cloth purhcased at any sandpaper outlet then giv a coat of grease.

You could have it turned, but like the other post said buying a new one is cheaper.



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T_Bone

03-09-2002 02:32:58




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 Re: Re: Pitted hydraulic rams in reply to Franz, 03-08-2002 21:19:58  
Hi rod,

Franz is right on as it not making too much of a difference. When I bought my tractor one of the loader cylinder rod was bent about 1/2" at 6" from the end. I straighten that out to within a 1/32" but in doing so it pitted the rod really bad, chipped the chrome off when I applied the heat, and all I did was take some emery paper and smoothed the ruff edges off, put the pressure to it and it didn't leak a drop even with pressure held over the ruff spots. That was with the old seals.

The cylinder piston was leaking so I did rebuild the cylinder, cost about $30 for a seal kit. I've got about 50hrs on the cylinder and it's still holding. This was on a two way cylinder.

T_Bone

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kraig WY

03-08-2002 19:06:22




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 Re: Pitted hydraulic rams in reply to rod, 03-08-2002 18:55:52  
You are probably going to have to change the seals. Maybe you can get by with polishing the ram if it isn't pitted too bad. If not look for a new ram before having this one re-built by a machine shop. I had two rebuilt at $225 a piece then found I could buy new ones for $100. Boy did I feel like an idiot.



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