ITT GOULDS PUMPS 3316, Инструкции по установке, эксплуатации и обслуживанию

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end of the shaft to eliminate any possibility of binding between the outside of the bearing and the
bearing housing bore. Now continue to drive the bearing solidly against the shaft shoulder.
19. Screw shaft nut (110) on shaft and tight against bearing (112).
20. Oil shaft extension and slide coupling end bearing end cover (119) on shaft with gasket (360) in
place, being careful not to injure oil seal (332). Turn end cover so that the small oil cup is up when
the double locks of the bearing housing are in the lower most position (see Figure 19 and 20). This
oil cup is used as a pressure relief for the bearing housing. It must be in the vertical position or the
bearing will not be properly oiled. Be sure gasket (360) is in place. Bolt the end cover to the bearing
housing.
21. Assemble the pump half coupling as follows: Put oil or white lead on shaft extension and in the cou-
pling bore. Insert pump half coupling key in shaft. Place the complete pump half coupling over end
of shaft and align key with keyway. Place a solid object, such as portion of a 2" diameter bar,
against the end of the shaft opposite the coupling end drive coupling half on shaft with a lead mall.
NOTICE:
If a bearing puller, similar to that shown in Figure 19 is available, it can be used on thrust bear-
ing end to hold shaft when driving on coupling half. When using the puller for this purpose,
draw the puller screw up only finger tight. Locate the coupling half in the same location on shaft
as it was when removed.
Never drive the coupling on shaft with the thrust end bearing end cover (109) in place as this may
injure the ball bearing.
22. Bolt the thrust end bearing end cover (109) to the bearing housing. Be sure gasket (360A) is in
place. Be sure relief fitting is up as indicated in Step 20..
NOTICE:
From one to three gaskets (360A) are used to secure the proper thrust bearing end play. Be-
cause of machining tolerances, a replacement thrust bearing may vary in width by as much as
0.020". End play must be checked and adjusted by adding or removing gaskets as described in
7.11 Reassembly of pump on page 41 , Step 30.
23. Smooth up and clean casing wearing ring, diaphragm, stuffing box bushing and bearing housing
seats in upper and lower half casing. The casing and bearing caps are precision bored so that hand
scraping and fitting of the casing wearing rings, diaphragm, stuffing box bushings or bearing hous-
ings are not required. Inspect gasket and if torn or otherwise damaged, cut a new gasket. The gas-
ket should be removed while installing the rotating element in the casing.
To cut a new gasket, lay the gasket sheet on the upper half casing parting flange, which will serve
as a template. Strike the sheet with a ball peen hammer. This will cut the gasket against the edges
of the casting, and around the parting stud holes. The gasket must cover the entire surface of the
parting flange, especially around the casing wearing ring locks, or internal leakage from high to low
pressure zones in the pump may occur.
24. Lower carefully the entire rotating element into the lower half casing. Be sure that the wearing rings,
diaphragm, stuffing box bushing and bearing housing "locks" line up with the recesses in the lower
half casing. The double "locks" on each of these parts must be on the bottom so that when the up-
per half casing and the bearing caps, having only one recess each, are bolted in place, these parts
are locked against rotation.
With "locks" properly aligned, the rotating element should settle easily into place. If there is interfer-
ence, the impeller may have to be tapped along the shaft until it lines up correctly. The sleeves may
have to be backed off to do this.
After the element has been properly seated in the lower half casing, check the clearance at "C" and
"D". (See Figures 21 and 22). The clearance at "C" and "D" should be equal.
7.11 Reassembly of pump
3316 Installation, Operation and Maintenance Instructions 45