ITT Goulds Pumps 3405, Инструкции по установке, эксплуатации и обслуживанию

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The original diametric clearance is .008" to .012". If this clearance has increased to more
than .030", the shaft sleeve, and at times, the stuffing box bushing should be replaced.
4. Condition of Shaft Sleeves:
If the outer surface of the shaft sleeve at the packing area is deeply grooved, the sleeve should
be replaced.
5. Condition of Shaft:
Check shaft for straightness. If bent, it should be straightened. If otherwise damaged, it should be
replaced.
6. Condition of Impeller:
Check the impeller and replace if any of the following conditions exist:
1. Excessive erosion, especially on the inlet of vanes.
2. Excessive wear on wearing ring surface.
7. Condition of Ball Bearings:
If the bearings are worn or damaged so that they have become loose or are noisy or rough when
rotated they should be replaced.
7.8 Emergency ball bearing replacement
If the thrust end ball bearing (112) has become worn and needs replacing and it is not desirable to over-
haul the entire pump, the bearing can be replaced as follows:
NOTICE:
This cannot be done on the coupling end unless the pump or the driver is removed from the
bedplate.
1. On Model 3406 pumps, remove oil pipe (190) and constant level oiler from thrust end bearing
housing (134A). Drain oil from housing.
2. Remove thrust bearing end cover (109 or 109A).
3. Remove snap ring (361).
4. Remove bearing cap (111).
5. Rotate bearing housing (134, 134A, or 166) 180° so that the two locks are on the top.
6. Remove ball bearing as directed in 7.4 Dismantling of pump on page 45 Steps 12 through 14.
7. Thoroughly flush bearing housing, bearing end cover, snap ring, ball bearing collar, and end of
shaft with clean kerosene. The slightest trace of dirt or grit may drastically reduce the life of a ball
bearing. Examine the ball bearing collar. If the edges of the collar are rounded over, or if the col-
lar is otherwise damaged, replace the collar.
Examine the shoulder on the shaft against which the ball bearing collar bears. Shoulder must be
square, and not rounded over.
8. Assemble new ball bearing as follows:
1. Wipe a small amount of grease on the grease seal lips in the bearing housing.
2. Place bearing housing on shaft, with the double locks up, and slide it along to approxi-
mately its correct location.
3. Slide ball bearing collar (237) over shaft end and push up to shaft shoulder.
4. Apply a film of oil to the bearing seat on the shaft. Start bearing "square'' and tap on shaft
up to the shaft shoulder. Use a driving sleeve as shown in
Figure 21: Left hand pump on
page 48 and Figure 22: Right hand pump on page 49 .
7.8 Emergency ball bearing replacement
3405-3406-3416 Installation, Operation and Maintenance Instructions 55