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Discussion Starter · #1 ·
On my 646, the two piece fitting between the holding valve and the motor keeps loosening up and spewing oil all over. Every time I work it hard, it unscrews it's self and spays oil all over. Looking at this, all steel lines holding it on except for the line from the control valve to the holding valve. I am guessing the hose which is as short as possible is flexing causing a ratchet action working the fitting loose.

I don't see anything like a holding bracket in the manuals. Any suggestions on how to keep this holding valve from ratcheting loose? Should I just order a new steel line to replace the replacement hose?
 

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I think that you could be correct in your analysis. The body is supported by ALL the steel lines that connect to it and now...one of the important ones is not there. It would surprise me if Eastman still had any stock of the line you seek BUT...if you contact them and get a list of all the regional distributors, you could call each of them with the correct part number and ask if they have it. In the event that effort produces nothing, then I would make a sturdy bracket, bolt it to the frame and then use a few gear clamps to secure the valve body to the bracket.
 

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Discussion Starter · #4 ·
Rockdog said:
What type of fitting is it? Have you indexed it with a paint stick or marker or scribe to determine it is actually loosening vs. losing clamp load?
Rockdog, not sure what you mean by clamp load. It is a 37 degree flare fitting. All I can tell you is it actually unscrews at least 2 full turns. Never indexed it. I can tighten it back with fingers then wrench.

Hydriv, a truck shop near here has a ipie bender and says to bring in ends so they can match up fittings and use Parker compression fittings on tubes. Not sure if they can bend one that tight. But no Eastman has none. I do have a guy checking into a old Case dealer.
 
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