Step 1
Before starting disassembly, mark
a line from each liquid chamber to
its corresponding air chamber. This
line will assist in proper alignment
during reassembly.
Step 2
Using an appropriate-sized wrench,
remove the two (2) small clamp
bands that fasten the discharge
manifold to the liquid chambers.
Step 3
Lift the discharge manifold to
expose discharge valve balls and
valve seats. Inspect ball cage area
of manifold for excessive wear or
damage.
WIL-10410-E-05 11 WILDEN PUMP & ENGINEERING, LLC
Section 7
PUMP DISASSEMBLY
Tools Required:
• Appropriate-sized
Wrench
• Adjustable Wrench
• Vise equipped w/
soft jaws (such as
plywood, plastic
or other suitable
material)
CAUTION: Before any maintenance or repair is attempted, the compressed air line
to the pump should be disconnected and all air pressure allowed to bleed from the
pump. Disconnect all intake, discharge and air lines. Drain the pump by turning it
upside down and allowing any fluid to flow into a suitable container. Be aware of
any hazardous effects of contact with your process fluid.
NOTE: The model photographed is an aluminum PS4 38 mm (1-1/2”) pump. Your
specific pump model may vary from configuration shown.
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