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WILDEN PUMP & ENGINEERING, LLC WIL-10260-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.
• Be sure to tighten outer pistons simultaneously on PTFE-
fitted pumps to ensure proper torque values.
MAXIMUM TORQUE SPECIFICATIONS
Description of Part Metal Pumps
Air Valve 3.4 N·m [30 in-lbs]
Outer Piston 54.2 N·m [40 ft-lbs]
Small Clamp Band 3.4 N·m [30 in-lbs]
Large Clamp Band (Rubber-Fitted) 10.7 N·m [95 in-lbs]
Large Clamp Band (PTFE-Fitted) 13.5 N·m [120 in-lbs]
Center Block Assembly 8.5 N·m [75 in-lbs]
Polyurethane Screen Base 2.3 N·m [20 in-lbs]
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