ITT Goulds Pumps 3755, Инструкция по установке, эксплуатации и обслуживанию

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9. Push impeller on the remaining distance with impeller nut (304) and washer (199).
10. Replace suction cover (182) and nuts on studs (356).
11. Connect suction piping.
12. Start pump as directed in
Starting Pump.
7.7 Replacing shaft or bearings
For grease lubricated bearings:
1. Shut off and disconnect all piping.
2. Drain liquid from pump.
3. Disconnect coupling.
4. Remove pump hold-down bolts and remove pump from bedplate.
5. Remove impeller as instructed in 7.5 Wearing rings on page 31 and impeller key (178).
6. Remove gland assembly as instructed in 7.2 Repacking stuffing box on page 27 .
7. Loosen set screw in deflector (123).
8. Note the distance from the end of the shaft to the coupling face of the pump half coupling so that
the coupling half can be correctly positioned when assembled. Pull the coupling from pump with
a suitable puller.
9. Remove coupling key.
10. Remove machine bolts (370C) from bearing housing (111).
11. Shaft and bearings can now be pulled through coupling end of frame (228).
12. To remove ball bearing-coupling end (112) proceed as follows:
Using suitable pliers, remove the bearing housing retaining ring (361A) which is seated in the
housing and shoulders against the outer race of the bearing. The housing can now be slipped
over the bearings. Remove the shaft retaining ring (361) which is seated in the shaft and retains
the inner race of the bearing. With the use of a suitable bearing puller, which engages the bear-
ing on the inner race only, remove coupling end bearing (112).
13. To remove ball-bearing inboard end (168) slide suitable pipe or sleeve over shaft to bearing, be-
ing sure that the pipe rests on the inner race. By evenly tapping the free end of the pipe, the
bearing will be forced off without damaging the shaft. Inspect shaft and bearings. If shaft is bent it
must be straightened. If necessary, replace the shaft. Bearing should spin smoothly and evenly. If
bearings are not in first class condition, they should be replaced. If bearings are to be reused
they should be carefully cleaned with kerosene. The bearing housing and frame should also be
flushed and cleaned.
7.7 Replacing shaft or bearings
Model 3755 Installation, Operation, and Maintenance Manual 33