Posted by Al L. in Wisc. on March 13, 2011 at 10:38:26 from (216.226.92.67):
In Reply to: F460 Hydraulic Noise posted by SteveF460 on March 13, 2011 at 05:39:04:
[quote="SteveF460"; You maybe already did this but, looking at the Maintenance Manual it states:
Air entering the system...causes an increased amount of vibration and unsteady pressure. The presence of air in the system will be noticed by a noise in the pump or by the pump laboring when operated under high pressure. Proper filling...working the system during the filling process...
FREEING THE SYSTEM OF TRAPPED AIR
Start the tractor engine and operate it at a moderate idle speed. With the filler plug removed , slowly move the control handle or andles back and forth ten or twelve times through their full range of travel.
Then with the handles in the neutral position, stop the engine. If necessary add fluid up to the proper level.....
From your post, you did a thorough fluid/filter change and took the time with seals, etc. I recall others over time with similar problem. It would be great if you would post back your results/solution(s) so others could learn. Good luck problem solving, hope you get the girl running smoothly soon.
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