Step 16
Remove the discharge elbow and
discharge T-section from the liquid
chamber. This will allow for easy
removal of the fl ap valve assembly.
Inspect for nicks, gouges, chemical
attack or abrasive wear.
Step 17
Using a 19 mm wrench, remove the
fasteners that connect the liquid
chambers to the center section.
Step 18
Remove the liquid chamber to
expose the diaphragm and outer
piston.
Step 19
Using a 5/16" hex head wrench,
remove fasteners that connect
the air valve to the center section.
Inspect air valve gasket and replace
if necessary.
Step 20
Next, remove center section
assembly from pump stand.
Step 21
Using two 10 mm hex head
wrenches, loosen the outer piston
from the main shaft.
P U M P D I S A S S E M B L Y
WILDEN PUMP & ENGINEERING, LLC
12
WIL-11140-E-03
