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

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Figure 12: Exploded assembly
14. It is important that all parts are free from dirt and grit while being assembled. Note that these
bearings are shielded on one side to retain the grease and they must be installed properly as
shown in
7.4 Sectional views, parts list and interchangeability tables on page 29 .
15. To replace the ball bearing-inboard end (168), oil shaft at bearing seat and slide bearing over the
shaft as far as possible by hand. Place the pipe or sleeve used to remove the bearing over the
shaft and against the bearing, being sure that it rests only on the inner race. Tap evenly until the
bearing is seated firmly against the shaft shoulder. Care should be taken not to mar the shaft,
especially where it contacts the grease seal (333) or in the stuffing box area.
16. To replace ball bearing-coupling end (112) oil shaft at bearing seat and slide bearing over the
shaft as far as possible by hand. Using a suitable pipe or sleeve which rests only on the inner
race of the bearing, tap evenly on the free end of the pipe until the bearing is seated firmly
against the shaft shoulder. Insert the retaining ring (361) in the shaft groove. Carefully slide the
bearing housing (111) over the shaft and bearing as far as possible. Insert the retaining ring
(361A) in the groove in the bearing housing. All retaining ring grooves must be clean and the re-
taining rings must be properly seated. Note that the flat sides of the rings are against the bearing
and the tapered sides away from the bearing.
17. Carefully insert shaft, bearings and bearing housing in frame. Remember to place the deflector
(123) on shaft as it protrudes through grease seal (332).
18. Be sure shaft is clean. Place a few drops of oil on shaft and press sleeve (126) on shaft, being
sure that sleeve keyway and shaft keyway are in alignment. Fasten deflector on sleeve by tight-
ening set screw, being sure that point enters hole in sleeve.
19. Loosen bolts (370D) and push shaft unit toward water end so that bearing housing flange is
against end of frame.
20. Replace casing (100) and bolts (370B).
21. Replace impeller key (178) in shaft.
22. Slide impeller on shaft as far as possible.
7.7 Replacing shaft or bearings
34 Model 3755 Installation, Operation, and Maintenance Manual