16
Step 7.
Figure 7
Remove pilot spool sleeve from center
section.
Step 8.
Figure 8
With o-ring pick, gently remove the o-ring
from the opposite side of the “center hole”
cut on 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 “center cut” side 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.
Step 9.
Figure 9
Check center section Glyd™ rings for
signs of wear. If necessary, remove
Glyd™ rings with o-ring pick and
replace.
Step 5.
Figure 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.
Figure 6
Remove pilot spool sleeve retaining snap ring on both sides
of center section with snap ring pliers.
WILDEN PUMP & ENGINEERING, LLC
WIL-10140-E-08
Summary of Contents for Wilden Original P1
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