Xylem 9100 Series Base Mounted Centrifugal Fire Pumps AC8585 REV.C - Manual (Page 30)

ASSEMBLY (PUMP WITH PACKING)
All bearings, O-rings, bearing isolators,
gaskets, impeller rings, and casing wear rings
should be replaced with new parts during
assembly. All reusable parts should be
cleaned of all foreign matter before
reassembling. The main casing joint gasket
can be made using the upper or lower half as
a template. Lay the gasket material on the
casing joint and mark it by pressing it against
the edges of the casing. Trim the gasket, so
that it is flush with the inside edges of the
casing.
1. Place impeller key (3-911-1) in shaft
(3-007-0).
2. Check the impeller (4-002-0) and casing
to determine the correct impeller rotation
(See Figure 10) and locate the impeller on
the shaft per dimension “A”. (See
Figure 12)
3. Place both shaft sleeve keys (3-911-3) on
shaft (3-007-0).
4. Slide sleeve gaskets (1-428-1) onto shaft
and against hubs of impeller.
5. Slide sleeves (3-009-9) onto shaft.
FIGURE 14 - CASING RINGS
FIGURE 15 - DRILLING SET SCREW RECESS
FIGURE 16 - GREASE LUBRICATED BEARING
HOUSING
6. Place the sleeve O-ring (3-914-9) onto the
shaft, into the sleeve counterbore. Verify
that Dimension “A” (Figure 12) is
maintained, then using a pin spanner
wrench and hammer, securely tighten the
shaft sleeve nuts (3-015-9). Then, drill a
shallow recess in the shaft through the set
screw hole in each of the shaft sleeve
nuts. Lock each shaft sleeve nut in
position with cup point set screws (3-902-
9). (See Figure 15) A low strength sealant,
such as Loctite 271, can be used to retain
set screws.
7. Assemble casing rings (3-003-9).
8. Start heating bearings (3-026-2) so that
they will be ready when called for in step
11. Use dry heat from induction heat
lamps from electric furnace, or a 10-15%
soluble oil and water solution.
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