On 2010-08-19, Lloyd E. Sponenburgh lloydspinsidemindspring.com wrote:
Ignoramus28889 fired this volley in
:

OK, guys, forgive my ignorance, what exactly is a spool ring, where
does it go on a solenoid valve?


Like I said before, most valves have the construction that allows the
spool to be extracted from one end. On an Ingersoll-Rand style of valve,
you remove a snap ring from a shallow cavity on one end, remove a
retainer cap, and the spool can be bumped out or driven out by pilot
pressure.

The spool is simply that -- a "spool" of metal (usually aluminum) with up
to four o-rings forming the seals in the valve bore. You clean the bore
of goo and rubber chips, replace the rings, and lubricate everything with
a light grease compatible with the o-ring material, and you're back
running.

Almost always, the symptom you describe is caused by a chip in an o-ring
right where it passes by a port in the bore.

If you can find the valve model number, likely MSC or McMaster will have
a repair kit listed for it.

This is Univer AE-1001. I will take it downstairs now and will take it
apart.

i