PSG Dover WILDEN PRO-FLO P.025, Инженерия, эксплуатация и обслуживание, Страница: 19 / 28

WIL-10090-E-08
Wilden
®
19
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 pump, follow the disassembly instructions in reverse
order. The air distribution system needs to be assembled first, then
the diaphragms, and finally the wetted parts. Please find applicable
torque specifications in this section.
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 a small amount of Loctite 242 to the shaft interval
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 [2.3 N•m] 20 in. -lbs
Liquid Chamber Bolt
[6.2 N•m] 55 in. -lbs.
Manifold Bolt
[6.2 N•m] 55 in. -lbs.
Rubber/TPE-Fitted Diaphragm
There are two types of diaphragm configurations available for
the P.025:
1) Rubber or TPE diaphragm, and
2) PTFE primary diaphragm with back-up o-ring. Observe the
“This Side Out” marking on the convex side of the diaphragm.
Install the disc spring, inner piston, diaphragm, back-up o-ring
(PTFE -fitted models only).
NOTE: PTFE-fitted pumps employ an integral piston
diaphragm. Add a small amount of Loctite 242 to the bore of
the main shaft. Set up time is 20 minutes. Tighten outer piston
to torque value found below.
PTFE diaphragm configuration
Lubricate the main shaft assembly with NLGI grade 2 white EP bearing
grease or equivalent and insert through main shaft bore in center section.
Assemble the other side and torque to proper value as listed below.
Please review the photos above for proper alignment.