WILDEN PUMP & ENGINEERING, LLC
36
WIL-11210-E-15
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. NOTE: Pro-Flo X™ air
valve incorporates an end-cap at
both ends of the air valve.
Step 5
Remove the air valve spool from
the air valve body by threading one
air valve bolt into the end of the
air valve 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 sleeve retaining snap
ring on both sides of center section
with snap-ring pliers.
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
Step 7
Remove pilot spool sleeve from
center section.
Step 8
Using an O-ring pick, gently remove the O-ring from the opposite side
of the “notched end“ on one side of the pilot spool. Gently remove
the pilot spool from pilot spool sleeve and inspect for nick, gouges and
wear. Replace pilot sleeve or outer sleeve O-rings if necessary. During
re-assembly, never insert the pilot spool into the sleeve with the “notched
end“ first, 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.
NOTCHED
END
Summary of Contents for Wilden Advanced P400
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