•
Make sure that all parts and threads are clean and that you have followed all directions
under the Preassembly inspections section.
•
Check for magnetism on the pump shaft and demagnetize the shaft if there is
any detectable magnetism. Magnetism attracts ferritic objects to the impeller, seal, and
bearings which can result in excessive heat generation, sparks, and premature failure.
Pure oil-mist lubricated power ends are assembled in the same manner as ring oil-lubricated power
ends. Oil rings are not furnished with pure oil-mist lubrication. Disregard any reference to those parts.
1.
Assemble the radial bearing (168) onto the shaft (122).
The bearings are interference fit.
112 Duplex thrust bearing
114 Oil rings
122 Shaft
136 Thrust-bearing locknut
168 Radial bearing
382 Lockwasher
Figure 65: Radial (inboard) bearing installation
a) Preheat the bearings to 120°C | 250°F with an induction type bearing heater.
The induction heater also demagnetizes the bearings.
6.6 Reassembly
Model 3700, 3703, 3710, 3700LF, 3700LFI API Type OH2 / ISO 13709 1st and 2nd Ed. / API 610 8/9/10/11th Ed. Instal-
lation, Operation, and Maintenance Manual
93
Summary of Contents for Goulds Pumps 3700
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