Hey Marty, you and all the other gear heads out there can just skip rite over this one,,,
I've had these hats off for a while now, valves came from my parts 1250,
had big oLe glob of "solder" on top of Valve to prevent button from leaking,,,
Following the
faq#55 figured I'd give the rebuild a go. Sponsors above CCSpecilities sale the rebuild kits, mention the small rubber o-ring on the inside sponsor will likely send that as well.
As far as removing hats, if you have no access to lathe then use any method you feel comfortable w/,,, just think "minimal frustration"
The
faq page shows "auto hydraulic relief" rebuild,,,
I've never seen Auto Relief Valves,,,?!?,,?!?,,, but anyway these 2 Manual Relief Valves have different internal's and a Different Size internal o-ring as well,,,
With hats off, button/plunger drops right out, now you have access to the leaking o-ring.
Before installing new internal o-ring maybe soak a piece of scotch brite in ultraction and shine all the dirt off button/plunger area above o-ring where all the dirt and crud accumulate causing buttons to become "stuck" in the down position,,, also a small pipe cleaner soaked in Hydro oil as well works Good for cleaning crud from button hole in valve body,,,
A nice warm "work shop" would probably be a better scenario for rebuilding valves, this task can be somewhat cumbersome in 16 degree weather w/ numb finger tips,,,
Stripping a piece of welding lead makes a good welding ground, Prevents arc marks from using ground clamp directly on Valve body or even grounding through vice will sometimes leave arc marks on work piece,,,
Using the GTAW/tig process w/ no filler these small 20amp "skin tacks" will not provide sufficient strength to prevent Valve hats and Valve internals from exploding down into hydraulic charge pump under normal working pressures.
Quoting
faq #55a (YOU DON’T WANT THE VALVE TO COME APART AND PIECES GOING DOWN INTO THE HYDRO)
Therefore, "Minimal Frustration" at this point is to completely fuse weld hat to valve body versus crimping or "trying" to add filler during the tacking process.
Out of the fire, into the Ultraction!!!
Remove from Ultraction, Remove ALL external o-rings and install ALL the New external o-rings that came w/ rebuild kit,,,
Now another dunk in Ultraction and with tool of choice spin Buttons round and round and round and up and down and,,, round down round up down up round to get the internal o-ring & Valve body internals Saturated with hydro oil,,,
Install Fresh Rebuilt Valves and Run that Hydro WOT on closest county rd or st route,,,
