Gorman-Rupp Pumps 03B51-B 1371962 and up - Manual (Page 28)

OM-01239 0 SERIES
MAINTENANCE & REPAIR PAGE E - 9
pound to the face of the vane plate, between the
vane plate and seal plate. Position the vane plate
over the impeller and secure it with the hardware (4
and 5).
Pump Casing Installation
Install the casing gasket (25) over the casing studs
(23). Install a new seal ring (30) over the suction
opening inside the pump casing.
Remove the two capscrews and nuts used to tem­
porarily secure the seal plate to the pedestal. Care­
fully position the pump casing so the seal ring
seats against the vane plate. Secure the casing to
the seal plate and pedestal with the nuts (24).
Final Pump Assembly
Be sure the pump and power source are securely
mounted to the base.
Install the suction and discharge lines and open all
valves. Make certain that all piping connections are
tight, properly supported and secure.
Be sure the pump, pedestal and power source
have been properly lubricated, see LUBRICA­
TION.
Fill the pump casing with clean liquid. Reinstall the
fill plug (36) and tighten it.
Refer to OPERATION, Section C, before putting
the pump back into service.
LUBRICATION
Seal Assembly
The seal assembly is lubricated by the medium be­
ing pumped and no additional lubrication is re­
quired.
Bearing
The pedestal was fully lubricated when shipped
from the factory. Under normal conditions, remove
the vented plug (10) and add three shots of No. 0
lithium based grease from a grease gun through
the opening after each 250 hours of operation or
once each month, whichever comes first. Do not
over‐lubricate. Over‐lubrication can cause the
bearing to over‐heat, resulting in premature bear­
ing 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 pedestal, fill the cavity
through the vented plug opening with approxi­
mately 1/3 lb. (150 grams) of No. 0 lithium based
grease.
For cold weather operation, consult the factory or a
lubricant supplier for the recommended grade of
lubricant.