WIL-10450-E-03
Wilden
®
17
Disassembly / Reassembly
Air Valve / Center Section Disassembly
Tools Required:
•
3/16" Hex-Head Wrench
•
1/4" Hex-Head Wrench
•
Snap-Ring Pliers
•
O-Ring Pick
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 hazardous effects of contact with your process fluid.
The Wilden Pro-Flo
®
SHIFT plastic pumps utilize a revolutionary Pro-Flo
®
SHIFT air distribution system.
Proprietary composite seals reduce the coefficient of friction and allow the Pro-Flo
®
SHIFT to run lube-
free. The Pro-Flo
®
SHIFT air distribution system is designed to perform in on/off, non-freezing, non-
stalling, tough-duty applications.
NOTE:
Replace worn parts with genuine Wilden parts for reliable performance.
Step 1
Loosen the air valve bolts using an
appropriate-sized hex wrench.
Step 2
Remove air valve bolts, muffler plate
and air valve assembly to expose
muffler gasket and air valve gasket.
Replace if necessary.
Step 3
Remove air valve end cap to expose the
large end of the air valve spool by lifting up
on the air valve end cap once the bolts
have been removed.
