Goulds Pumps NM3171 - IOM - Manual (Page 35)

APPENDIX II
SUPPLEMENTAL INSTRUCTIONS FOR NM3171 MAINTENANCE . . . . . 29
SEALED BEARING DESIGN
This supplement addresses the grease
lubricated/sealed bearing design that uses the
pumpage to externally cool the bearing cavity. The
standard bearing configuration is product lubricated,
and is addressed in the IOM. The bearing housing
will be provided fully assembled. This will include
the bearing housing, bearing, lip seals and snap
rings.
Assembly steps to immediately follow the
attachment of the first column pipe assembly to the
protector plate. (Page 11 of the NM3171 IOM):
1. Squeeze the top lip seal of the bearing assembly
so that it will go over the pump shaft.
2. Slide the bearing assembly onto the shaft and
lock it into place on the lock collar of the column
shaft.
Note: Care must be taken to align the cooling
connections on the bearing housing with the
cooling piping. The same care must be taken
to align the grease connection with the
grease line. All fittings should line up with
the appropriate supply lines as originally
installed by the factory.
3. Repeat steps 1-3 until all column shafts and
bearing assemblies are in place.
4. Grease the bearing with NLGI#2 Grade Lithium
12 Hydroxysterate EP Grease or equivalent
before assembling grease lines.
5. Assemble all grease lines, fittings and
connectors together but do not connect to
bearing housing.
6. Charge all grease lines from the grease cup
down to the connector of the bearing assembly.
7. Confirm that grease comes out of the male
connector of the bearing assembly, and then
connect to the bearing assembly.
8. Continue with instructions in IOM at point of
placing pump cover against last column bearing.
Note: Keep grease cup reservoir full at all
times.
Note: it is important to ensure that all air is
out of grease lines and grease lines are
charged before pump startup.
NM 3171 IOM 5/08
29