Goulds Pumps LF 3196 i-FRAME - IOM - Manual (Page 117)

Lubrication conversion
Frame lubrication conversion
NOTICE:
• Never mix greases of different consistencies (NLGI 1 or 3 with NLGI 2) or with different thickeners.
For example, never mix a lithium-based grease with a polyurea-based grease. Doing so may result in
decreased performance.
• Remove the bearings and old grease if you need to change the grease type or consistency. Failure to
do so may result in equipment damage or decreased performance.
Use a grease that is suitable for high temperatures when you have frame pumpage temperatures greater
than 350°F (177°C). Ensure that mineral-oil greases have oxidation stabilizers and a consistency of NLGI
3.
Most pumps use Sunoco 2EP grease. High temperature units with a pumpage temperature greater than
350° F (177°C) use Mobil SCH32.
This table shows which brand of grease to use when lubricating the pump.
Table 23: Lubricating-grease requirements
Pumpage temperature less than
350°F (177°C)
Pumpage temperature greater
than 350°F (177°C)
NGLI consistency 2 3
Mobil Mobilux EP2 SCH32
Exxon Unirex N2 Unirex N3
Sunoco Mutipurpose 2EP N/A
SKF LGMT 2 LGMT 3
Convert from greased-for-life or regreaseable to oil-lubricated bearings
1. Remove the plug from the oil-return slot in the frame located under the radial bearing. Use this table
as a guide.
Pump model Action
STi Remove the epoxy from the return slot.
MTi, LTi Remove the set screw installed in the oil-return hole.
2. Remove the plug from the oil-return hole in the bearing housing (134).
NOTICE: For the LTi, the bearing housing (134) and clamp ring (253B) require replacement. Failure
to do so may result in decreased performance.
3. Replace both bearings with unshielded, oil-lubricated bearings.
Table 24: Bearing types
Frame Inboard bearing
Outboard bearing
Double row Duplex
STi 6207 3306 7306
MTi 6309 3309 7309
LTi 6311 Not applicable 7310
4. Remove the grease fittings (193) to prevent accidental greasing.
Two plugs (408H) are required to replace the two grease fittings.
Maintenance
Model LF 3196 i-FRAME Installation, Operation, and Maintenance Manual 115