Dover PSG Wilden PS1520, Engineering, Operation & Maintenance, Page: 21 / 32

WIL-11520-E-07
19 WILDEN PUMP & ENGINEERING, LLC
Step 10
Using an O-ring pick, remove
the two (2) shaft bushings from
center block. Inspect and replace
if necessary. Using an O-ring pick,
gently remove the two (2) Glyd™
rings from the center block. Inspect
and replace if necessary.
Step 11
Using an O-ring pick, remove the
two (2) Glyd™ rings from modulator
spool bore. Inspect and replace if
necessary.
Step 12
Using an appropriate-sized wrench,
remove the pilot exhaust muffler.
Inspect for damage or contamination
and replace if necessary.
Step 14
Lift away muffler plate and muffler plate gasket from center block. Inspect
for wear and replace if necessary. Lift away the air valve assembly and
remove air valve gasket. Inspect the gasket and replace if necessary.
Step 13
Using an appropriate-sized hex
wrench, loosen and remove the
four (4) air valve bolts from center
section assembly.
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