Gorman-Rupp Pumps 54J20-B 1410811 and up User Manual
Page 33
OM-01342
50 SERIES
MAINTENANCE & REPAIR
PAGE E - 11
larly through the sight gauge (28)
and maintain it at
the middle of the gauge. When lubrication is re
quired, add SAE No. 30 non‐detergent
oil through
the hole for the air vent (17). Do not over‐lubricate.
Over‐lubrication can cause the bearings to over‐
heat, resulting in premature bearing failure.
NOTE
The white reflector in the sight gauge must be posi
tioned horizontally to provide proper drainage.
Under normal conditions, drain the pedestal once
each year and refill with approximately 14 ounces
(414 ml) of clean oil. Change the oil more fre
quently if the pump is operated continuously or in
stalled in an environment with rapid temperature
change.
Monitor the condition of the bearing lubri
cant regularly for evidence of rust or mois
ture condensation. This is especially im
portant in areas where variable hot and
cold temperatures are common.
For cold weather operation, consult the factory or a
lubricant supplier for the recommended grade of
oil.
Power Source
Consult the literature supplied with the power
source, or contact your local power source repre
sentative.