2
DISASSEMBLY / SERVICE:
To remove the clean-out chamber for the
purpose of removing debris refer to instructions
identified with an asterisk .
Use the exploded parts view with these
instructions and note recommended replacement
parts for the rebuild process.
1. Disconnect power.
2. Remove drain plug and drain the pump.
3. Disconnect and remove the pumpak
from the driver.
4. Remove the clean-out chamber fastening
nuts. Use the jackscrews to back off the
clean-out until the o-ring is visible, at this
point the clean-out chamber should slide out
by hand.
5. Inspect the wearplate for abrasive wear
and replace if necessary using new screws.
6. Remove 4 nuts from the adaptor and
disassemble the rotating assembly form the
housing.
7. Removing the shaft clamp will allow the
impeller/shaft assembly to be removed from
the seal housing.
8. Remove the seal components and discard.
9. Inspect the impeller and sleeve for wear. If
the edges of the impeller machined surfaces
are not well defined replace the impeller
.
REASSEMBLY:
1. Replace o-ring on suction clean-out
chamber.
2. Lightly coat the outside of the chamber and
o-ring with a water-soluble lubricant.
REASSEMBLY Continued:
3. Slide the clean-out into the pump housing.
Tighten two fasteners.
4. Tighten clean-out jackscrews until they
bottom out, then tighten the locknuts.
5. Install new seal seat into the adaptor with
the polished side of the seat facing up by
lubricating the adaptor and seat o-ring with a
water-soluble lubricant. Install by hand
using your thumbs to squarely locate the
seats against the shoulder of the adaptors.
Wipe the seal faces dry with a rag.
6. Lubricate the impeller sleeve and the seal
rotary bellows inner diameters with a water-
soluble lubricant.
7. Install the seal rotary onto the sleeve with
spring toward the impeller.
8. Lay the pump housing down on a bench.
9. Place the impeller inside the pump housing.
10. Install the housing gasket over the housing
studs and position it on the housing gasket
face.
11. Slide the seal adaptor over the impeller and
studs.
12. Tighten 4 nuts with lockwashers to 28 ft-lbs.
with a crosswise pattern.
13. Slide the drive sleeve clamp assembly on the
sleeve.
The pump can now be installed to the driver as a
pumpak.
♦ Caution.
Impeller running clearance
must be set. Refer to section titled Pumpak
Assembly.
PRINTED REV. 05/03
(4 pages)
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