Posted by JMOR on March 19, 2012 at 09:58:03 from (72.190.9.193):
In Reply to: Ford 600 hydraulics posted by soundguy on February 29, 2012 at 10:32:52:
Quoting Removed, click Modern View to seeI do not know a dimension for the amount of unloader spool movement, but I can help you figure it out. Look at he picture I posted early on here. See the white number "5". That passage going down to the unloader valve is accompanied by another passage just to the right. The spool is shown to right in this picture (in a position to block a common connection of these two passages)....this is shown in position in the position to "LIFT". If spool is moved far enough to left to allow the small diameter of spool to provide a path connecting the "5" passage & passage parallel to it together, then it would be in "hold" or "lower" (same for unloader valve). Between those two positions would be your answer as to 'how much does spool move'.
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Today's Featured Article - Hydraulic Basics - Part 2 - by Curtis Von Fange. In the last entry to this series we gave a brief overview of hydraulic system theory, its basic components and how it works. Now lets take a look at some general maintenance tips that will keep our system operating to its fullest potential. The two biggest enemies to a hydraulic system are dirt and water. Dirt can score the insides of cylinders, spool valves and pumps. Wate
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