20
WILDEN PUMP & ENGINEERING, LLC
WIL-10220-E-02
SECTION 8C
REASSEMBLY HINTS & TIPS
ASSEMBLY:
Upon performing applicable maintenance to the air distribu-
tion system, the pump can now be reassembled. Please
refer to the disassembly instructions for photos and parts
placement. To reassemble the pump, follow the disassem-
bly instructions in reverse order. The air distribution system
needs to be assembled first, then the diaphragms and finally
the wetted path. Please find the applicable torque speci-
fications on this page. The following tips will assist in the
assembly process.
• Clean the inside of the center section shaft bushing to
ensure no damage is done to new seals.
• Stainless bolts should be lubed to reduce the possibility
of seizing during tightening.
• Ensure proper alignment on the sealing surfaces of intake
and discharge manifolds.
• Liquid chambers are easier to attach when the diaphragm
is inverted. Prior to attaching the second water chamber,
push diaphragm assembly so that it is as close as possi-
ble to the center section.
• PVDF and PFA pumps require PTFE gasket kits for
improved sealing. Gasket kits may be installed on other
pumps where sealing is an issue.
• When assembling PTFE-coated hardware, care should
be taken to keep the coating intact.
• When installing Glyd™ rings, the use of the Wilden Ringer
tool simplifies seal installation.
MAXIMUM TORQUE SPECIFICATIONS
Description of Part
Plastic Pumps
Air Valve
3.4 N·m [30 in-lbs]
Outer Piston
47.5 N·m [35 ft-lbs]
Small Clamp Band
9.6 N·m [85 in-lbs]
Large Clamp Band (Rubber-fi tted)
18.6 N·m [165 in-lbs]
Large Clamp Band (PTFE-fi tted)
18.6 N·m [165 in-lbs]
