CNC 18 #1 Posted 5 hours ago I have a C160 automatic the hydraulic valve is leaking fluid. I have replaced all the hoses, had the cylinder and value rebulit . it still leaks at the valve assy. I am at my wits end! Has anyone had this problem or any suggestion? Thanks Share this post Link to post Share on other sites
peter lena 9,924 #2 Posted 5 hours ago @CNC only thing I can think of is o ring seal , rolling due to dry installation ? as tightened , if not properly lubed , the rings , grab and bind , twisting smaller tighter , making a leak area , regularly used SUPER LUBE , hydraulic lubricant , my suggestion , pete Share this post Link to post Share on other sites
ebinmaine 79,381 #3 Posted 4 hours ago 1 hour ago, CNC said: rebulit Can you see exactly what seam or joint is leaking? Share this post Link to post Share on other sites
CNC 18 #4 Posted 3 hours ago 46 minutes ago, ebinmaine said: Can you see exactly what seam or joint is leaking? It looks to me like it leaks from the hose that is 11 in. long that goes from front of valve assembly to back hole in the cylinder I have a friend that is coming over after the 4th who knows more about hydraulics to check it out and see where he thinks it is leaking. 1 Share this post Link to post Share on other sites
pfrederi 20,787 #5 Posted 2 hours ago 23 minutes ago, CNC said: It looks to me like it leaks from the hose that is 11 in. long that goes from front of valve assembly to back hole in the cylinder I have a friend that is coming over after the 4th who knows more about hydraulics to check it out and see where he thinks it is leaking. Possible the O ring was damaged during installation.... The hose end could be an SAE #6 ORB (O Ring Boss) or SAE#5 ORB #6 threads are 9/16NF #5 are 1/2" NF The orings are Dash #906 or Dash # 905 1 1 Share this post Link to post Share on other sites
