Specifications

WIL-10410-E-02 15 WILDEN PUMP & ENGINEERING, LLC
AIR VALVE / CENTER SECTION DISASSEMBLY
Step 4
Lift away air chamber from center
section and remove center block
gasket. Replace gasket if necessary.
Step 5
Turn assembly over and remove the
pilot spool sleeve from the center
section.
Step 6
UsinganO-ringpick,gentlyremove
theO-ringfromtheoppositesideof
the dimpled end of the pilot spool.
Step 8
Remove modulator spool from
center section. Check for wear to
spool or O-rings and replace if
necessary.
Step 9
Using the appropriate-sized wrench,
loosen the fasteners to remove
remaining air chamber and center
block gasket from center section.
Replace gasket if necessary.
Step 7
Gently remove the pilot spool from
the sleeve and inspect for nicks,
wear or damage. Replace the pilot
spool assembly or sleeve O-rings
if necessary. During reassembly,
never insert the dimpled end of the
pilot spool first, this will damage the
singleurethaneO-ringbypassingit
over the ports in the pilot sleeve.
NOTE:Sealsshouldnotberemoved
from the assembly. Seals are not
sold separately.