InsaneHydraulics - Sergiy Sydorenko © 2009-2011 All Ridghts Reserved
Check out this electric proportional displacement control module from a
Rexroth A4VG closed loop pump. The unit had gone through a major
overhaul, and after working fine for a couple of minutes stopped
responding to the input signal...
The images show you why - an oversized o'ring
had caused a small piece of the body crack off during the control
installation. The small chip then jammed the control spool, rendering
the module inoperable...
IH point of view as to this so very important matter:
Inserting oversized into undersized only works with
certain models of women's jeans - an inexplicable practice, which
nevertheless bears no negative consequences and most of the times is
pleasing to look at. O'rings, on the other hand (along with other
elastomeric seals) should be sized properly at all times! - a reminder to those folks who think that the fatter the better!