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Garden Tractors Discussion Forum

Re: JD 425 hydraulics

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04-28-2013 13:35:21

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8) Wow, JD Seller, it appears that you may have a bit of experience in this area? LOL The parts counter guy at my local JD lawn and garden dealer should take a class from you!

Thanks for all of the great info, I can see where ordering the bundle of couplers will alone save a bundle of money. I kind of thought that I needed some way to shut off the hydraulics to the deck also, the guy that I bought it from said no. Looks like I'll need a lockout valve (wow-those aren't cheap!), I may have to check out ebay-I do have some time. For $10, the loop looks like a no-brainer though.

You mention the spool on the control valve. Currently, when I try and move the lower htdraulic lever on the dash, it doesn't move nearly as freely as the upper lever that controls the deck. I'm guessing that by lubing the spool, that may take care of that stiffness on the lever?

Once again, thanks for taking the time to post the parts breakdown and the outstanding info. This board offers a wealth of great information and I appreciate what folks like you do for us less experienced types!

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JD Seller

04-28-2013 14:41:10

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 Re: JD 425 hydraulics in reply to Dan50, 04-28-2013 13:35:21  
Dan the lower lever( longer one) is the one that will be the lift on your snow blade. Like I said it has a float position when you push the lever forward. You will need to lube the spool where it goes into the control valve. It is on the inside of the frame. They can get really stuck. Especially on mowers where the guy washed them off a lot. The spool will get a little rusty. After you get it freed up just work it back and forth every now and then when you have the deck on. It will just make the hydraulic relief valve open for a moment. With it not running it will not even do that. It will keep the spool from getting sticky.

The top lever that currently lifts the deck will control the hydraulic angle of your blade. This is where you need the lock out valve. If you do not use it the deck cylinder will move first as it is under no load.

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