WIL-10183-E-03
Wilden
®
20
Disassembly / Reassembly
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” 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 10A
Check center block shaft seals for signs
of wear. If necessary, remove shaft
seals with O-ring pick and replace.
Step 10B
NOTE:
Threaded sleeves (see
A above) are removable and
can be replaced if necessary.
Sleeves can be press-fit by
hand.
