Gorman-Rupp Pumps 14A65-B 776101 and up - Manual (Page 34)

OM-2151 10 SERIES
MAINTENANCE & REPAIR PAGE E - 11
Secure the back cover assembly by installing the
clamp bar (62) and tightening the clamp bar screw
(61). Do not over‐tighten the clamp bar screw; it
should be just tight enough to seal the back cover
shoulder.
Suction Check Valve Installation
Inspect the check valve components and replace
as required. Subassemble the check valve weights
(73 and 74), check valve arm (76) and check valve
gasket (75) using the attaching hardware (71 and
72).
Position the check valve assembly (70) in the
check valve seat (79) with the large weight toward
the inside of the pump casing. Install the inner
check valve gasket (82) on the studs (68).
Position the check valve assembly and seat in the
suction port. Install the outer check valve gasket
(81) and suction flange (78). Secure the complete
assembly with the nuts (69). Check the operation
of the check valve to ensure proper seating and
free movement.
Final Pump Assembly
Secure the pump to the base with the previously re­
moved hardware. Be sure to reinstall any leveling
shims used under the pump mounting feet.
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. Open all the
valves in the suction and discharge lines.
Be sure the pump and power source have been
properly lubricated, see LUBRICATION.
Remove the fill cover assembly (28) and fill the
pump casing with clean liquid. Reinstall the fill cov­
er and tighten it.
Refer to OPERATION, Section C, before putting
the pump back into service.
LUBRICATION
Bearings
The pedestal was fully lubricated when shipped
from the factory. Check the oil level regularly
through the sight gauge (42) and maintain it at the
middle of the gauge. When lubrication is required,
add SAE No. 30 non‐detergent oil through the hole
for the air vent (21). Do not over‐lubricate. Over‐lu­
brication can cause the bearings to over‐heat, re­
sulting 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 to the middle of the sight
gauge. Change the oil more frequently if the pump
is operated continuously or installed in an environ­
ment 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.
Seal Assembly
The seal assembly is lubricated by the medium be­
ing pumped or by a flow of fresh liquid from an ex­
ternal source. Flushing liquid may be taken from
the pump discharge and supplied through auxilia­
ry piping installed in the seal plate. Remove the
pipe plug (18) to install the auxiliary piping.
Be sure the liquid supplied to the seal is compatible
with the liquid being pumped, and that its flow is
controlled to prevent dilution.
Power Source
Consult the literature supplied with the power
source, or contact your local power source repre­
sentative.