Gorman-Rupp Pumps 11 1/2A2-B 347543 and up - Manual (Page 34)

OM-00558 10 SERIES
MAINTENANCE & REPAIR PAGE E - 11
LUBRICATION
Seal Assembly
(Figures 1 and 4)
Fill the grease cup (12) through the grease fitting
with No. 2 lithium base grease until grease es­
capes from the relief hole. Turn the grease cup arm
counterclockwise until it is at the top of the stem;
this will release the spring to apply grease to the
seal (see Figure 4).
GREASE
FITTING
CROSS
ARM
POSITION
WHEN
EMPTY
POSITION
FOR
FILLING
POSITION
WHEN
IN USE
RELIEF
HOLE
Figure 4. Automatic Lubricating Grease Cup
Bearings
The pedestal was fully lubricated when shipped
from the factory. Under normal conditions, remove
the vented plug (18) and add one shot of No. 0 lithi­
um base grease from a grease gun after each 250
hours of operation or once each month, whichever
comes first. Do not over lubricate. Over lubrication
can cause the bearings to over heat, resulting in
premature bearing failure.
There are no provisions in the bearing cavity to
drain or flush the lubricant. The pump and pedestal
must be disassembled to completely clean and
maintain this cavity.
Under normal conditions, change the grease after
each 5000 hours of operation, or at 12 month inter­
vals, whichever comes first. Change the grease
more frequently if the pump is operated continu­
ously or installed in an environment where variable
hot and cold temperatures are common.
When lubricating a dry (overhauled) pedestal, fill
the cavity with approximately 1.5 ounces (43
grams) of grease.
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.
Power Source
Consult the literature supplied with the power
source, or contact your local power source repre­
sentative.