Hydraulic pump stuttering?

General help and support for your Lindeman through 2010 John Deere crawler
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Davie Sprocket
430 crawler
430 crawler
Posts: 71
Joined: Sun Jul 08, 2007 11:37 am
Location: Leduc Alberta, Canada

Hydraulic pump stuttering?

Post by Davie Sprocket » Thu Mar 13, 2008 11:02 pm

I am dealing with a weird problem, when i put a load on the hydraulic system say lifting the blade with weight or pushing down with the blade the hydraulic system stutters and there is a pulsation. I check the oil and there is lots and the oils new, sept last year. Is this a problem with the valve or pump, if its the pump are there rebuild kits around or rebuilt pumps. New rams and hoses in sept as well, any ideas.

Have a good one

Dave
420C Holt Blade ROPS

420-40C Basket Case

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Stretch
440 crawler
440 crawler
Posts: 200
Joined: Mon Feb 19, 2007 6:48 pm
Location: Albemarle, NC

Post by Stretch » Fri Mar 14, 2008 4:17 am

Dave,
Sounds to me like you are having issues with the bypass in the spool valve. Easy fix. Could be someting as simple as an oring. You may have got some foreign material in it. You can also check your pump pressure to be sure. If it is the pump should be no problem either rebuilding, I find most of my parts at local hydraulic shop. Hope this helps
Stretch
2010C Dozer, 2010C Loader
If at first you don't succeed, get a bigger hammer.

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