WIL-10050-E-02
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 bushing to
ensure no damage is done to new seals.
•
Stainless bolts should be lubed to reduce the possibility
of seizing during tightening.
•
Level the water chamber side of the intake/discharge
manifold to ensure a proper sealing surface. This is most
easily accomplished by placing them on a flat surface
prior to tightening their clamp bands to the desired
torque (see this page for torque specs).
•
Be sure to tighten outer pistons simultaneously on
PTFE- fitted pumps to ensure proper torque values.
•
Ensure proper mating of liquid chambers to manifolds prior to
tightening vertical bolts. Overhang should be equal on both sides.
•
Apply a small amount of Loctite 242 to the steel bore of the shaft from
the diaphragm assembly.
MAXIMUM TORQUE SPECIFICATIONS
Description of Part
Metal Pumps
Solenoid Air Valve (Turbo-Flo™)
3.4 N·m [30 in-lbs]
Solenoid Air Valve (Pro-Flo
®
)
3.1 N·m [27 in-lbs]
Adapter Block Air Valve
3.1 N·m [27 in-lbs]
Outer Piston
14.1 N·m [125 in-lbs]
Small Clamp Band
1.7 N·m [15 in-lbs]
Large Clamp Band (Rubber-fitted)
9.0 N·m [80 in-lbs]
Large Clamp Band (PTFE-fitted)
13.6 N·m [120 in-lbs]
Vertical Bolts
14.1 N·m [125 in-lbs]
