WSP™
DATA SHEET
WSP™ SELF-PRIMER PUMPS
WSP-D300_6
Rev. 3
01/09/20
© 2019 The Factory
31
Once the seal is replaced, install and adjust the impeller/seal plate clearance (.025” to
.040”).
2. Cartridge Seal Installation
i. Install the seal plate gasket if the seal plate was previously removed.
Carefully place the seal plate directly over the shaft, and attach it to
the bearing housing with its hardware. Next, lubricate the seal plate
O-ring with light grease, and install in on the seal plate.
ii. Stretch the O-ring over an appropriately sized tube to prevent damage
to the O-ring. Slip the tube over the threads, sliding the O-ring off the
tube onto the shaft. After removing the tube, continue sliding the O-
ring down the shaft until it seats itself against the shaft shoulder then
use light oil to lubricate the shaft sleeve O-ring.
iii. To install a new seal assembly; unpack the new seal, and using the
stationary seal seat holder lubricate the external stationary seat holder
O-ring and the bore of the seal plate where the seal will be installed
with light oil.
iv. Lubricate the shaft sleeve with light weight oil.
v. Slide the Seal assembly onto the shaft just to the point where the
stationary seat O-ring engages the seal plate bore.
vi. Install the impeller shims and screw the impeller onto the shaft until it
seats against the seal.
vii. Continue to screw the impeller onto the shaft until the stationary seat
is fully seated in the seal plate. The seal spring will compress and the
shaft sleeve will break the shear pins. This will allow the sleeve to
slide down the shaft until fully seated against the shaft shoulder.
NOTE:
Firm resistance will be felt as the stationary seat is pressed into the seal plate
bore.
Should it become necessary to reuse an old seal in an emergency, separate both the
stationary and rotating seal faces from the bellows retainer and stationary seat. Be careful
not to damage the seal faces.
Once the seal is replaced, install and adjust the impeller/seal plate clearance (.025” to
.040”).
K. INSTALLING & ADJUSTING THE IMPELLER
Prior to installation, thoroughly clean and inspect the impeller. Begin by installing the
complete set of impeller shims that come with the seal. Screw the impeller onto the
Summary of Contents for WSP-6
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