Figure 10: Impeller puller
6.
Remove stuffing box gland (107).
7.
Remove bolts (370B) and pull casing (100) from frame (228).
8.
Remove stuffing box packing and lantern ring (105) from casing. Retain lantern ring.
9.
Loosen set screw in deflector (123) until deflector will rotate on sleeve.
10. By use of a suitable puller similar to that shown in
Figure 11: Shaft sleeve puller on page 28
pull shaft sleeve (126) from shaft. All deflectors are provided with tapped holes to facilitate use of
a puller.
Figure 11: Shaft sleeve puller
11. Replace deflector on shaft and slide it against frame.
12. Be sure shaft is clean. Place a few drops of oil on shaft and press new shaft sleeve (126) on
shaft, being sure that sleeve keyway and shaft keyway are in alignment.
13. Fasten deflector (123) to shaft sleeve (126) by tightening set screw, being sure that point of set
screw enters hole in shaft.
14. Slide lantern ring along shaft sleeve and wire temporarily to deflector (123).
15. Replace casing (100) and bolts (370B).
16. Replace impeller key (178) in shaft, being sure that key enters keyway in sleeve.
17. Slide impeller on shaft as far as possible.
18. Using a soft metal hammer, tap evenly on center of impeller until shaft threads protrude beyond
impeller.
19. Push impeller on the remaining distance with impeller nut (304) and washer (199).
20. Replace suction cover (182), gasket (351) and nuts on studs (356).
21. Repack stuffing box with new packing as directed in
22. Connect all piping.
23. Start pump as directed in
Starting Pump.
7.3 Replacing shaft sleeve
28
Model 3755 Installation, Operation, and Maintenance Manual
Содержание Goulds Pumps 3755
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