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Mech · 04-07-2008, 04:18 PM

Here is the part #:

AM875169 SHIM ***'Y, RELIEF 2.68 2.68 Stock

It is just a set of shims (washers) that goes on top of the compression spring of the relief valve to increase the pressure it kicks out at. I think it came with 5 shims and I put them all in. I think maybe some have put in two kits. You can search on that part number here to find some threads. If I put in two kits I would definitely put a pressure guage on it and make sure it wasn't getting too high. It wasn't too hard to put in but I don't remember what I had to take off to get to it. I think the shims came with instructions. It is hard to tell how much it helped because I put it in a few weeks after I got the tractor. It will lift as much as I'm comfortable carrying in the front bucket and runs the TNT, angle kit, and 3 pt just fine.

04-07-2008, 04:18 PM	#6 (permalink)
Mech Gold Member Join Date: Jan 2007 Location: Pine, CO Posts: 289	Re: JD 790 4x4 Here is the part #: AM875169 SHIM ***'Y, RELIEF 2.68 2.68 Stock It is just a set of shims (washers) that goes on top of the compression spring of the relief valve to increase the pressure it kicks out at. I think it came with 5 shims and I put them all in. I think maybe some have put in two kits. You can search on that part number here to find some threads. If I put in two kits I would definitely put a pressure guage on it and make sure it wasn't getting too high. It wasn't too hard to put in but I don't remember what I had to take off to get to it. I think the shims came with instructions. It is hard to tell how much it helped because I put it in a few weeks after I got the tractor. It will lift as much as I'm comfortable carrying in the front bucket and runs the TNT, angle kit, and 3 pt just fine.