Re: Hydra-Touch Repair or Replace???

Posted by dick on March 12, 2001 at 10:19:18 from (63.120.111.98):

In Reply to: Hydra-Touch Repair or Replace??? posted by Bob Kirk on March 12, 2001 at 07:33:07:

Unfortunately, o-rings don't have much to do with internal leakage in these Hydra-Touch valves. Unless you've got fluid leakage to the outside world, replacing o-rings won't get you anywhere.

The inside of these valves (originally) had a very tight tolerance (about 0.0004 inch) between the valve body and the piston which gets moved back and forth to control which way the fluid is going. That's all that prevents leakage in the main control valves. When this clearance goes to pot from wear, etc., you basically are stuck with replacing the valve, or using some external means of blocking the fluid to prevent leakage. Unless you can find someone who can build up the metal in the valve to restore the original tight tolerance, refurbishing the valve isn't going to be effective in reducing leakage.

The cross-check valve which fits on the bottome of the Hydra-Touch valve controlling the Fast Hitch, however, has a metal seat which seals pretty well. If you can figure out how to use one of these with your loader to prevent it from leaking down, that might be the best way to go.

I've been in the process converting my single-valve system to a triple-valve system, so I've been fooling with these valves quite a bit lately (and learned more than I really wanted to know about them in the process). All the used Hydra-Touch valves I got from a salvage yard leaked pretty badly. I ended up going with one of the IH cross-check valves on one of the valves I added, and put a hand valve in the lift line of the second. This is probably the best that can be done at this point using original equipment, since new Hydra-Touch valves don't seem to be available.

The alternative would be to put in new valves of some other type, but I'm not familiar with any that just bolt right on. These Hydra-Touch valves don't rank too high on my list of good IH ideas, mainly because they're not designed to be good sealing valves under the best of conditions. Good luck whichever way you decide to go.

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