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Discussion Forum
:

Hydraulic pump

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Steve (WI)

10-13-2002 19:42:42




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Hello,

Im in the middle of tearing down a WD45 to do an over-all check out and fix a joint leak between the rear casting and tranny.(The previous owner looks to have replaced the hand clutch.) Anyway...the hydraulic pump made some ugly sounds when under load when this tractor was running. I now have it off the tractor and would like to re-build or replace it. Are there re-build kits available and how difficult of a job am I looking at? Do the Agco dealers carry re-builds and how much are they with a core charge?

Thanks in advance,

Steve

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David T (MO)

10-17-2002 06:51:05




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 Re: Hydraulic pump in reply to Steve (WI), 10-13-2002 19:42:42  
The hydraulic pump on the WD line is a four piston pump and can make a good deal of racket when under a load, nothing usual there. I didn't have much luck locating a rebuild kit for mine but most of the parts a generic enough you can take the old part to a good hydraulic shop and have them match it. Rebuilt pumps can be had for about $200 and some places might give you $20 for the core. The most common failing in these old pump is a weakening of the unloading spring in the presure releif valve. (The pump will work fine without a load but can't pick up anything heavy.) The pump should put out 3500 psi (+-300) before unloading. (In my case, the pump unloaded at 1000 psi.) I'd suggest getting a gauge on your pump and then decide whether it really needs to be rebuilt (if it ain't broke...) which I admit could be hard to do with the tractor in the middle of a rebuild. Good Luck!

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David T (MO)

10-17-2002 06:54:55




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 Re: Re: Hydraulic pump in reply to David T (MO), 10-17-2002 06:51:05  
I meant "nothing UNusual there" about the noisy pump. Sorry ;-)



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Ricky

10-15-2002 09:57:52




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 Re: Hydraulic pump in reply to Steve (WI), 10-13-2002 19:42:42  
The kits do not cost much. I bought one for my CA and it was about 55.00. All that is in there is some springs and plungers and Orings. You can do it yourself real easy. Call you AGCO dealer and get the kit. Ricky



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