2.
Impeller Wearing Rings:
If the unit has impeller wearing rings and it is necessary to replace the rings:
a) Remove old rings by removing the three
set screws and pulling ring off hub.
b) Clean hub and press on new ring.
c)
Drill and tap three holes 120° apart in each ring. Use "F" drill 13/16" deep with 5/16" - 18 NC
taps 3/8" deep. Use 5/16" x 5/16" cup point safety set screws. Tighten screws and lightly "up-
set" threads. See
d) Replacement impeller rings are supplied .021" to .039" oversize and must be turned to size af-
ter mounting on impeller. See
for dimensions.
3.
Fit of Impeller on Shaft:
The impellers should tap easily on the shaft. If the impellers do not tap on readily, the bore and shaft
should be inspected to see that they are free from foreign matter or burrs. The fit of the key in the
keyways should also be checked to see that it is not causing binding. See
4.
Clearance Between Shaft Sleeve (104 or 126) and Stuffing Box Bushing (125):
The original diametric clearance is .020" to .024" for all materials. If progressive wear contributes to
a decrease in performance and/or excessive leakage through the stuffing box, the shaft sleeve and,
at times, the stuffing box bushing should be replaced.
5.
Condition of Shaft Sleeves:
If the outer surface of the shaft sleeve at the packing area is deeply grooved, the sleeve should be
replaced.
6.
Conditions of Shaft:
Check shaft for straightness. If bent, it should be straightened. If otherwise damaged, it should be
replaced.
7.
Condition of Impellers:
Check the impellers and replace if any of the following conditions exist:
a) Excessive erosion, especially on the inlet of vanes.
b) Excessive wear on wearing surfaces.
8.
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.
9.
Clearance Between Impeller Hub & Diaphragm:
The original diametric clearance between the impeller and diaphragm is shown in
. When performance is substantially reduced, or when the diametrical clearance exceeds
0.035", the diaphragm and, at times, the impeller should be replaced.
7.10 Overhaul of pump
40
3316 Installation, Operation and Maintenance Instructions
Содержание GOULDS PUMPS 3316
Страница 1: ...Installation Operation and Maintenance Instructions 3316 ...
Страница 2: ......
Страница 18: ...Figure 6 2 5 Install suction piping 16 3316 Installation Operation and Maintenance Instructions ...
Страница 41: ...Figure 20 7 10 Overhaul of pump 3316 Installation Operation and Maintenance Instructions 39 ...
Страница 44: ...Figure 22 Left hand pump 7 11 Reassembly of pump 42 3316 Installation Operation and Maintenance Instructions ...