Dover PSG Wilden PRO-FLO P2, Engineering, Operation & Maintenance

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WIL-10150-E-11
Wilden ®
20
Disassembly / Reassembly
Reassembly Hints & Tips
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 assembled 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 bore 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.
•
Apply two (2) drops of Loctite® 246 to the shaft internal threads
before the diaphragm assembly.
•
Concave side of disc spring in diaphragm assembly faces
toward inner piston.
PRO-FLO MAXIMUM TORQUE SPECIFICATIONS
Description of Part Torque
Air Valve, Pro-Flo
®
3.1 N•m (27 in -lb)
Air Inlet, Reducer Bushing 0.9 N•m (8 in -lb)
Outer Piston — Rubber- and PTFE-fitted 27.1 N•m (20 ft -lb)
Top and Bottom Retainers 14.1 N•m (125 in -lb)
Large Clamp Band — Rubber-fitted 10.7 N•m (95 in -lb)
Large Clamp Band — PTFE-fitted 14.1 N•m (125 in -lb)