WIL-10330-E-04
23
WILDEN PUMP & ENGINEERING, LLC
Step 4
Remove air valve end cap to expose
air valve spool by simply lifting up
on end cap once air valve bolts are
removed.
Step 5
Remove air valve spool from air valve
body by threading one air valve bolt into
the end of the spool and gently sliding
the spool out of the air valve body.
Inspect seals for signs of wear and
replace entire assembly if necessary.
Use caution when handling air valve
spool to prevent damaging seals.
NOTE:
Seals should not be removed
from assembly. Seals are not sold
separately.
Step 6
Remove pilot spool retaining snap
ring on both sides of center section
with snap ring pliers.
Step 9
With o-ring pick, gently remove the
o-ring from the opposite side of the
notched end of the spool. Gently
remove the pilot spool from sleeve
and inspect for nicks or gouges and
other signs of wear. replace pilot sleeve
assembly or outer sleeve o-rings if
necessary. During re-assembly never
insert the pilot spool into the sleeve
with the “notched" end side fi rst, this
end incorporates the urethane o-ring
and will be damaged as it slides over
the ports cut in the sleeve.
NOTE:
Seals should not be
removed from pilot spool. Seals
are not sold separately.
Step 7
Remove air chamber bolts with
1/4" hex head wrench.
Step 8
Remove pilot spool bushing from
center block.
A I R V A L V E / C E N T E R S E C T I O N D I S A S S E M B L Y
Summary of Contents for Original PX15
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