scored piston on backhoe ---

[Unregistered2013]

-- can they be repaired?

it's causing the seal to leak a bit --

-- tried sanding with 150 and 800 grit, but wasn't thrilled with the response --

-- it's on the outrigger arm --

-- one thing kubota DOESN'T do is put shields on those -- very stupid decision --

thanks!

 

[RoyJackson]

Onced scored, it's time for rebuild, replacement or live with some leakage.

 

[Wacky]

Agree with Roy. Once scored the material is gone, sanding will only remove more, granted it will taper the scoring out, but never the less will remove the thickness around the scratch which will decrease the seal around the cylinder. Albeit minor amount of removal.

 

[Unregistered2013]

thanks for this --

-- sorta feared this response --

 

[crazyal]

Are you talking the actual piston or the chrome rod? If it's just the rod then you should be able to rebuild it without spending a fortune. There are companies that will cut the end off of the rod and weld on a new one. I assume this is what you're talking about. If there's damage to the piston and the inside of the cylinder wall you may be better off looking for a used replacement.

 

[Unregistered2013]

i'm sorry -- it's not the piston --

-- it's the rod --

-- that makes much more sense --

 

[kennyd]

I have heard of filling the gouge with a brazing rod and torch, then carefully file and polish to the height of the surrounding chrome.

 

[JoelD]

Wayne hose can answer better than I, if you use the machine a bunch then I'd probably replace the rod. I can't imagine it being too crazy money.

Joel

 

[smilingreen]

You should be able to replace the rod on the cylinder. You will never get the cap seal and wiper to quit leaking hydraulic fluid. Find a local hydraulic shop and see if they can order you a new rod. Buy the rebuild seal kit, also. That may save you a few dollars by not having to buy the whole cylinder.

 

[RoyJackson]

I have heard of filling the gouge with a brazing rod and torch, then carefully file and polish to the height of the surrounding chrome.

I've seen it done with silver solder (same as braze, but a little more heat). Silver solder holds up better then brazing rod.
Kind of chancy though. Might end up rebuilding anyway.
Can't help to try though...