MAINTENANCE
PUMP OVERHAUL
Step 1 (Figure 2)
A. Remove 4 body screws (Key 1), cover (Key 2), front
wearplate (Key 3), O-Ring (Key 4), and Impeller (Key 5).
B. Clean out inside of pump body.
Step 2 (Figure 3)
A. Remove back wearplate (Key 7) and set aside .
B. If seal is leaking, remove 2 body bolts (Key 6) and pump
body (Key 8, Figure 4).
Step 3 (Figure 4)
A. Remove seal retainer (Key 10) with screwdriver and re-
move seal (Key 9). Install the new seal with lip facing to-
ward impeller side of pump body. Press seal retainer (Key
10) squarely and firmly into seal bore of body.
B. Check motor shaft for wear under seal area. If grooved or
worn, replace motor.
Step 4 (Figure 5)
A. Attach pump body (Key 8) to motor with 2 body bolts
(Key 6).
B. Install inner wearplate (Key 7) in body bore with unworn
surface toward impeller.
Step 5 (Figure 6)
A. Lightly grease inside of pump housing to ease installation
of impeller (Key 5).
B. Line up flat on motor shaft with flat inside impeller insert.
C. Push impeller into pump body using clockwise twist to
bend impeller blades in direction of motor rotation.
Step 6 (Figure 7)
A. Install O-Ring (Key 4), front wearplate (Key 3). and cover
(Key No. 2). If front wearplate is worn, reverse plate so
unworn side faces the impeller.
B. Tighten the 4 body screws (Key 1), moderately and evenly
at first; when all screws are snug, retighten to fasten cover
firmly. Do not overtighten.
4
1
2
3 4
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Replace seal
if leaking.
Remove
wear plate
if worn.
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6
5
7
8
9 10 11
Replace motor if
shaft is worn.
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Figure 2 – Disassembly
Figure 3 – Remove wear plate and set aside.
Figure 4 – Replace motor if shaft is worn.
Install wear plate
with smooth
side out.
5
4
Lightly grease
housing bore with
lithium-based grease
and install impeller.
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1
2
3
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Figure 5 – Install wear plate.
Figure 6 – Install impeller.
Figure 7 – Reassemble pump.
