Xylem G&L A-C 9100 Series, Instruction Manual

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6.8 Dimensions
Figure 21: Cross section
Pump size
Quantity
2–904–9
Dimension A
12x8x22M 25
13.50
12x8x22L 26
14x10x20S 26
15.81
16x12x23 26
16x14x17 24
18x14x23 32
14x10x20L 26 16.60
6.9 Reassembly
6.9.1 Reassemble the pump with the mechanical seals on the shaft sleeve
All bearings, O-rings, seals, and gaskets 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 should be made using the upper 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
and locate the impeller on the shaft per dimension “A” given in table.
NOTE: For impellers with replaceable rings, heat each new ring(4–004–9) and slide it
onto the impeller. Hold the rings against the impeller shoulder until they cool.
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 hub of impeller.
5. Slide sleeves (3–009–9) onto shaft.
6. Place the sleeve O-ring (3–914–9) onto the shaft, into the sleeve counterbore. Verify
that Dimension “A” is maintained. 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 nuts. Lock each shaft sleeve nut in position with
cup point set screws (3–902–9). A low strength sealant, such as Loctite 271, can be
used to retain set screws.
6 Maintenance
G&L Pumps Series A-C 9100 Base Mounted Centrifugal Pumps INSTRUCTION MANUAL 35