rons
Diamond
- Joined
- Mar 5, 2009
- Location
- California, USA
Last week it was this. The dial is forced to stay by denting the aluminum. Problem is that the dents fell down into
the dial and the ring no longer tracks the rotation of the dial. You can see the dents at 9 and 12 o'clock.
Remedy with a slight amount of gray epoxy around the dial.
This morning a fix to a Wilkerson regulator. I unscrewed the adjustment piece that has a diaphragm/spring inside to apply
counter-pressure to close the air when a pressure is reached. What broke was a metal washer underneath those four circular
indentations around the white replacement piece I made. Without a guide there the regulator would always expel air. Now the
pressure in the two chambers on each side of the diaphragm become equal and the regulator is behaving.
The regulator works but without a history. I didn't realize that the air had to come up through the opening around the brass pin.
I was using a rubber o-ring that I thought came from the unit. But it was blocking air and the control would not work. The hole
has to be loose enough to allow filtered air from below to pass through.
Before: o-ring with s.s. washer on top and washer sits below flat surface.
After: one HDPE cylinder about .320 diameter and .120 high. The hole is slightly larger than the brass pin by less than .010.
Should the hole that the brass pin fits in be larger in diameter? A problem where the cylinder is inserted into the chamber
and then the hole size in the center becomes a tad smaller.
Two examples of peen hits in aluminum that fail and the piece of metal being held comes loose. I'm thinking that this kind of design is a hack ...
the dial and the ring no longer tracks the rotation of the dial. You can see the dents at 9 and 12 o'clock.
Remedy with a slight amount of gray epoxy around the dial.
This morning a fix to a Wilkerson regulator. I unscrewed the adjustment piece that has a diaphragm/spring inside to apply
counter-pressure to close the air when a pressure is reached. What broke was a metal washer underneath those four circular
indentations around the white replacement piece I made. Without a guide there the regulator would always expel air. Now the
pressure in the two chambers on each side of the diaphragm become equal and the regulator is behaving.
The regulator works but without a history. I didn't realize that the air had to come up through the opening around the brass pin.
I was using a rubber o-ring that I thought came from the unit. But it was blocking air and the control would not work. The hole
has to be loose enough to allow filtered air from below to pass through.
Before: o-ring with s.s. washer on top and washer sits below flat surface.
After: one HDPE cylinder about .320 diameter and .120 high. The hole is slightly larger than the brass pin by less than .010.
Should the hole that the brass pin fits in be larger in diameter? A problem where the cylinder is inserted into the chamber
and then the hole size in the center becomes a tad smaller.
Two examples of peen hits in aluminum that fail and the piece of metal being held comes loose. I'm thinking that this kind of design is a hack ...
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