Xylem AC8584C Series HSCS Base Mounted Centrifugal Pumps User Manual
Page 21
2
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6. Place the sleeve O-ring (3-914-9) onto the shaft, into the
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sleeve counterbore. Verify that Dimension “A” (Figure 12) is
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maintained, then using a pin spanner wrench and hammer,
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securely tighten the shaft sleeve nuts (3-015-9). Then, drill
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a shallow recess in the shaft through the set screw hole in
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each of the shaft sleeve nuts. Lock each shaft sleeve nut
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in position with cup point set screws (3-902-9). (See Figure
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15) A low strength sealant, such as Loctite 271, can be
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used to retain set screws.
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7. Assemble casing rings (3-003-9). (See page 26 for
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adjustable rings.)
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8. Start heating bearings (3-026-2) so that they will be ready
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when called for in step 11. Use dry heat from induction
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heat lamps from electric furnace, or a 10-15% soluble oil
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and water solution.
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9. Assemble oil seals (3-177-9) in each bearing cover. Install
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gaskets (3-409-9) on each bearing cover.
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NOTE: Seal lip or pr
essure side of oil seal must point
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towards the end of the shaft that the oil seal is assembled
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on. (See Figures 25 and 26)
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10. Slide deflectors (3-136-9) and bearing covers (3-018-3, -4)
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on the shaft. Install snap rings (3-915-9). Install thrust
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washer (3-078-9) on the outboard end.
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For ease of assembly and protection of rubber parts while
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sliding rubber parts onto shaft, cover O-ring groove, key-
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ways, and thread with electric tape.
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NOTE: Inboar
d bearing cover (3-018-3) is approximately
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1/4 inch less in width than the outboard bearing cover
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(3-517-4). This is the only dimensional difference.
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11. Press heated bearing (3-026-2) on shaft against snap ring
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or thrust washer. Install locknut (3-516-4) and lockwasher
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(3-517-4) on outboard end. Make certain locknut is
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secured and then bend over tab on lockwasher.
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12.
PUMPS WITH GREASE LUBRICA
TION
Cool bearings at r
oom temperature and coat with 2 or 3
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ounces of a recommended grease.
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PUMPS WITH OIL LUBRICA
TION
Refer to page 26 for installation of oil lubricated parts.
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13. Assemble oil seals (3-177-9) in each bearing housing.
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Refer to
NOTE under number 9 above for dir
ection of oil
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seal.
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14. Slide bearing housings (3-025-2) onto shaft (3-007-0) over
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bearings (3-0262).
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CAUTION: DO NOT
EXCEED 275°F.
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CAUTION: These ar
e precision, high quality bearings.
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exercise care at all times to keep them clean and free
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from foreign matter.
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FIGURE 14 – CASING AND IMPELLER RINGS
FIGURE 15 – DRILLING SET SCREW RECESS