Posted by 300dave on May 30, 2014 at 06:57:53 from (50.48.62.243):
hers the deal, my 300 U hydraulic system will sometimes produce a little screaching/groaning sound with a slight bogging down in engine speed at the same time. This is intermitent. One day it may not happen at all. The next (like yesterday) it's fine for an hour, and then starts acting up every 15-30 seconds. Then it will stop and run fine. I just took the system completely apart this spring. Cleaned it all out nice, resivour, screen, lines, cylinder, valve and controller. I found the screen loaded up with black stuff, and a few red paint chips. The paint chips have come off the inside off the resivour. The black stuff, who knows. It does not seem to make any difference if I work the cylinder up and down a few times. So my question is (are): 1- is my pump crapping out I and should replace? I ran it over the winter with NO hydrofluid and it never screached or moaned or gave trouble. So, I think it's OK. 2- anybody else every have paint chipping off INSIDE the spoolers, res tank etc? and how to fix 3- hydraulic lines rotting out on the inside? anybody have any thoughts on that?
Again, I ran this about 15 hours with the no hydraulic fluid to the pump and it never gave trouble.
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