873 Valve Leak

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Nov 5, 2013
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Digging a stump out and saw a wet line in the dirt when backing up. Lifting the cab revealed some fluid near back of valve on right side. Removing the side cover on this side and witnessed fluid running from the valve above. It would leak when started and even before the green Press to Operate button is pushed. It appears the green boot is pushed off however can't tell for sure where the leak is. Using a mirror, I am able to see three socket head cap screws on a cap on the top above the green cap and a couple socket cap screws on the green cap. Not sure what is below on red cap part of this valve. Looks like seals go bad on the red and green cap parts from something I had seen in another post. Too late on Saturday to get parts and don't want to leave this disassembled for days so I'll wait until I can decide what to do before going any further. What are the green/red capped parts of this valve? Are fasteners on this SAE or metric? Can these parts come off without removing lines off back?
 
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