Goulds Pumps 3355 - IOM - Manual (Page 36)

Maintenance
Bearing maintenance
Ball bearing types
Grease lubricated bearings
Pump size Suction side, radial suction Discharge side, radial and end
suction
1.5 x 2.5-7 6306-C3 5306 A
2.5 x 4-8 6307-C3 5307 A C3
4 x 5-10 6308-C3 2x 7308 BECBM
5 x 6-11 6310-C3 2x 7310 BECBM
Grease lubrication schedule
Pump size Grease quantity Re-lubrication intervals
Suction side, Discharge 3550 rpm 2950 rpm 2200 rpm 1750 rpm 1450 rpm
in ounces side, in
ounces
Operating hours
1.5 x 2.5-7 0.25 0.40 3800 4300 5500 6000 6500
2.5 x 4-8 0.30 0.50 3500 4000 5000 5500 6000
4 x 5-10 0.40 0.75 3300 3800 4500 5000 5500
5 x 6-11 0.55 1.10 2500 3300 4300 4800 5000
Lubricating-grease requirements
Precautions
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.
Grease recommendations based on temperature
Most pumps use Sunoco 2EP grease.
This table shows which brand of grease to use when lubricating the pump.
Brand When temperature of pumped fluid is less than
350°F (177°C) - NLGI consistency 2
Mobil Mobilux EP2
Exxon Unirex N2
Sunoco Mutipurpose 2EP
SKF LGMT 2
Regrease the grease-lubricated bearings
NOTICE:
Make sure that the grease container, the greasing device, and the fittings are clean. Failure to
do this can result in impurities entering the bearing housing when you regrease the bearings.
1. Wipe dirt from the grease fittings.
2. Insert the amount of grease as noted in the Grease Lubrication Schedule above through
the grease fitting. If grease comes out the lip seal or the heat flinger, make sure that the
cavity is not completely filled with grease.
3. Wipe off any excess grease.
34 Model 3355 Installation, Operation, and Maintenance Manual