
WSP™
DATA SHEET
WSP™ SELF-PRIMER PUMPS
WSP-D300_10
Rev. 3
01/09/20
© 2019 The Factory
33
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
shaft making sure it seats against the shaft sleeve. Check to be sure the impeller is
hand-tight and fully connected to the shaft sleeve.
NOTE:
Should there be the slightest sign of binding, immediately take the impeller
off, and inspect the threads for dirt. Never force the impeller onto the shaft.
To obtain a clearance of .025 to .040 of an inch for optimal pump efficiency, measure
the clearance between the impeller and the rear wearplate. Remove the impeller
and remove an adequate amount of adjusting shims to ensure adequate clearance is
obtained.
Once adequate clearances between the impeller and the rear wearplate are met,
tighten the impeller with a lathe dog and a block of wood. Insert the impeller bolt
then torque the capscrew to 90-ft. lbs.
NOTE:
If the rotating assembly is left in the pump casing, the clearance may be
measured by cautiously reaching through the fill port with a feeler gauge.
WHEN REUSING AN OLD SEAL, DO NOT ATTEMPT TO SEPARATE THE ROTATING
PORTION OF THE SEAL FROM THE SHAFT SLEEVE. DURING USE THE RUBBER
BELLOWS WILL BOND TO THE SLEEVE AND ATTEMPTING TO SEPARATE THEM
WILL DAMAGE THE BELLOWS.
BEFORE REINSTALLING THE IMPELLER, COMPLETELY CLEAN THE SHAFT AND
IMPELLER THREADS. THE SMALLEST AMOUNT OF DIRT ON THE THREADS COULD
CAUSE THE IMPELLER TO SEIZE ON THE SHAFT, WHICH, IN TURN, MAKES FUTURE
REMOVAL DIFFICULT IF NOT IMPOSSIBLE WITHOUT SHAFT AND IMPELLER
DAMAGE.
Summary of Contents for 10-WSP
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