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WILDEN PUMP & ENGINEERING, LLC WIL-10230-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 6.8 N•m (60 in-lbs)
Outer Piston (PTFE-fi tted) 81.3 N•m (58 ft-lbs)
Outer Piston (Rubber-fi tted) 81.3 N•m (58 ft-lbs)
Small Clamp Band (All) 6.2 N•m (55 in-lbs)
Medium Clamp Band 10.2 N•m (90 in-lbs)
Large Clamp Band (All) 40.0 N•m (28 ft-lbs)
Center Block Assembly 47.5 N•m (35 ft-lbs)
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