Gorman-Rupp Pumps 06D17-GAR 708768 thru 1000782 - Manual (Page 32)

0 SERIES OM−01274
MAINTENANCE & REPAIR PAGE E − 12
Gearbox
The gearbox was fully lubricated when shipped
from the factory. Check the oil level regularly at the
oil fill pipe plug (54). When lubrication is required,
remove the air vent (13) and add SAE No. 90 gear
oil. Fill the gearbox until the oil level reaches the
bottom of the fill plug hole. Clean and reinstall the
fill plug. Do not over lubricate. Over-lubrication can
cause the bearings to over-heat, resulting in pre-
mature bearing failure.
NOTE
If the gearbox is rotated out of the standard posi-
tion, the oil fill and drain plugs must be relocated
(see the Outline Drawing in INSTALLATION, Sec-
tion B). The magnetic drain plug (54) must be relo-
cated to the lowest port, and the oil vent and elbow
(12 and 13) must be relocated to the highest port.
Consult the factory for correct positioning of the fill
plug to provide for proper lubrication of the gear-
box.
Under normal conditions, drain the gearbox once
each year. Add 2 ounces (59 ml) of Dow Corning
‘Molykote
r
M Gear Guard’, then fill with approxi-
mately 23 ounces (680 ml) of SAE No. 90 gear oil.
Change the oil more frequently if the pump is oper-
ated continuously or installed 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.