Trillium WSP-6, Installation, Operation & Maintenance Instructions Manual, Page: 33 / 73

WSP™
DATA SHEET WSP™ SELF-PRIMER PUMPS WSP-D300_6
Rev. 3 01/09/20
© 2019 The Factory
33
Use the same rotating assembly adjusting shim thickness as those removed. Attach
the rotating assembly to the pump casing with the hardware.
Refer to Section IV. Part I. Installing and Adjusting the Back Cover in these
instructions to accurately set impeller and wearplate clearance.
M. INSTALLING THE SUCTION CHECK VALVE
Carefully inspect the check valve assembly for wear and damage. If it is worn or
damaged, replace it.
NOTE:
Only replace the check valve assembly as a total unit. Parts are not sold
individually.
Enter the case through the back cover opening, with the check valve. Place the
check valve adaptor in the mounting slot. This is located in the suction flange.
Match the adaptor to the flange hole, and attach the check valve with the check valve
pin.
NOTE:
If you removed the suction or discharge flanges, replace both gaskets and
attach them to the pump casing with their attaching hardware.
N. INSTALLING & ADJUSTING THE BACK COVER
Center the wearplate on the back cover and attach it with its hardware if it was
previously removed. To prevent binding, it is critical for the wearplate to be
concentric when installing on the back cover.
You can easily adjust clearance between the wearplate and the impeller without
using hand tools. The ideal clearance between the wearplate and the impeller is
from .010” to .015”.