Goulds Pumps 3410 - IOM - Manual (Page 50)

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The impeller and wear ring clearance setting
procedures must be followed. Improperly setting the
clearance or not following any of the proper
procedures can result in sparks, unexpected heat
generation and equipment damage.
c. Ensure stuffing box bushings (125) are aligned
properly in stuffing boxes.
• To torque bearing housing to lower casing on each side
for all 3410 models, proceed as follows:
a. Install and tighten screws (372U) until snug.
b. Torque screws on each side to 40 ft-lbs (55 N.M.).
c. Torque each side to 59 ft-lbs (80 N.M.).
• Ensure mating surfaces on upper and lower casing halves
are clean. Install gasket (351).
• Using hoist, lift and sling attached to lifting lugs on upper
casing, carefully align and install upper casing. Install
dowel pins (496G).
• Install screws (426) and parting nuts (425) on studs
(356A). Tighten until snug. To torque nuts and screws,
respectively, proceed as follows:
1. Using X pattern working out towards flanges,
torque to:
S and M – 40 ft-lbs (55 N.M.)
L and XL – 60 ft-lbs (80 N.M.)
2. Using the same pattern, increase torque to:
S and M – 90 ft-lbs (122 N.M.)
L and XL – 180 ft-lbs (245 N.M.)
3. Again, using the same pattern, torque to:
S and M – 105 ft-lbs (142 N.M.)
L and XL – 255 ft-lbs (345 N.M.)
4. Recheck torque on each nut and screw.
• Install stuffing box packing (106), and lantern rings (105)
as outlined in para 2-13.
• Install stuffing box gland (107) and nuts (355). Tighten
nut only finger tight. Adjust glands.
• Install oiler (251) and drain plugs, if removed.
• Perform the following as required:
1. Lubricate bearings.
2. Align pump and driver.
3. Connect coupling.
4. Replace coupling guard.
5. Replace sealing liquid.
6. Replace cooling water piping.
7. Prime pump.
8. Inspection after starting.
9. Check stuffing boxes.
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3410 IOM 1/2010