WIL-11020-E-03
Wilden
®
17
Disassembly / Reassembly
Step 4
The air valve spool can now be removed.
A 10-24 UNC (Unified National Coarse
thread) screw can be screwed into the
threaded hole located in the center of the
spool. Grip the screw with pliers and
remove. If a 10-24 UNC screw is not
available, the spool can be tapped out
against a wood block or blown out with
compressed air. Upon reassembly,
lubricate air valve with NLGI grade 2 white
EP bearing grease.
Step 5
Remove the porous polyethylene
muffler element by sliding it toward the
end cap opening. The element can be
cleaned by soaking it in a cleaning
solution (no solvents). If the muffler
restricts the air exhaust, replace muffler
element.
Step 6
Remove pilot spool retaining ring with an
o-ring pick.
Step 7
Push pilot spool through center section and
remove. Inspect seals for integrity and
spool for damage. Replace pilot spool
assembly if necessary. Upon reassembly of
spool, apply a small amount of NLGI grade
2 white EP bearing grease or equivalent
(P/N 99-8310-99).
.
