SECTION 8C
REASSEMBLY HINTS & TIPS
ASSEMBLY:
Upon performing applicable maintenance to the air distribution
system, the pump can now be reassembled. Please refer to the
disassembly instructions for photos and parts placement. To
reassemble the pump, follow the disassembly instructions in
reverse order. The air distribution system needs to be assem-
bled first, then the diaphragms and finally the wetted path.
Please find the applicable torque specifications 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.
Description of Part
Plastic Pumps
Air Valve
6.8 m-N [60 in.-lbs.]
Outer Piston (Teflon
®
-fitted)
78.6 m-N [58 ft.-lbs.]
Outer Piston (Rubber-fitted)
78.6 m-N [58 ft.-lbs.]
Small Clamp Band (All)
6.2 m-N [55 in.-lbs.]
Medium Clamp Band
10.2 m-N [90 in.-lbs.]
Large Clamp Band (All)
40.0 m-N. [28 ft.-lbs]
Center Block Assembly
31.2 m-N [23 ft.-lbs.]
MAXIMUM TORQUE SPECIFICATIONS
20
WILDEN PUMP & ENGINEERING CO.
•
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 possible to the
center section.
•
PVDF and PFA pumps require Teflon
®
gasket kits for
improved sealing. Gasket kits may be installed on other
pumps where sealing is an issue.
•
When assembling Teflon
®
-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.
