Goulds Pumps 3393 - IOM - Manual (Page 122)

Appendix
3. Bring nuts up evenly by hand with a wrench
4. Snug nuts with wrench by hand to approx. 20 to 30 ft-lb.
5. Mount suction and discharge casing feet in final location.
6. Place liquid end assembly horizontally on a milled surface (the baseplate supplied with the
pump can be used).
7. Check flatness of casing feet against the milled surface with a feeler gauge. If not flat,
carefully and evenly loosen the four tie bolt nuts just enough to allow the casing feet to be
moved so they are flat on the milled surface of the table. Variation is to be ≤ 0.003 in. If
greater than 0.003 in, reface to meet requirements or replace casing feet.
8. Once the feet are flat on the table, retighten tie rod nuts 1 thru 4 in the manner defined
above.
9. Tighten tie rod nuts 5 thru 8 in the same manner.
10. Tighten all eight tie rod nuts in sequence shown in Figure above by hand with torque
wrench to approximately 50 ft-lb.
11. Mount dial indicators to shaft, measure and record the bearing housing face run-out on the
suction and discharge casings (see sketch below). If any readings exceed 0.005 in, stop
and address the issue. Note: Because there are no bearings mounted at this time, the shaft
will need to be pushed inward from the discharge end until it stops. Set the gauges to zero
and record the readings every 90
o .
NOTICE:End suction pumps will only have a reading on the discharge side.
12. Using a torque wrench, torque the tie rod nuts in the following three increments using the
sequence shown in Figure above: a. 100 ft-lb. b. 50% of full torque (if applicable). c. 100%
of full torque.
Table 13:
English Units Metric Units
Model Size (mm) 50% ft-lb 100% ft-lb 50% N-m 100% N-m
2.5x4-8 (65) 20x2.5 N/A 163 N/A 221
4x5-10 (100) 24x3 140 281 191 381
5x6-11 (125) 30x3.5 280 559 379 758
6x8-13 (150) 36x4 488 976 662 1324
13. Re-check flatness of casing feet against the milled surface with a feeler gauge. Max
variation is to be ≤ 0.003 in.
120 Model 3393 Installation, Operation, and Maintenance Manual