WILDEN PUMP & ENGINEERING, LLC
16
WIL-11050-E-05
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.
D I S A S S E M B L Y, C L E A N I N G , I N S P E C T I O N
S e c t i o n 8 C
R E A S S E M B L Y H I N T S & T I P S
Step 4.
Figure 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.
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
.
