Gorman-Rupp Pumps PA10A60-4045H-ESP 1485220 and up - Manual (Page 46)

PA SERIES OM-06351
MAINTENANCE & REPAIR PAGE E - 26
linkage bar on the float bottoms against the
threads on the orifice button. When adjustment is
complete, install and tighten the lock washer and
hex nut securing the orifice button.
Install the strainer (6) and priming valve gasket (4).
Lower the float into the priming chamber (5) and
secure the priming valve with the previously re­
moved hardware (2 and 3).
(Figure 6)
Install the baffle (9) and gasket (8) and use a sling
and suitable lifting device to position the priming
chamber assembly on the hopper spool (not
shown). Secure the priming chamber assembly
with the hardware (6 and 7).
Reconnect the suction piping to the hopper spool
and the air discharge tubing to the priming cham­
ber assembly.
Discharge Check Valve Reassembly
(Figure 2)
If the discharge check valve (53) was disas­
sembled for service, replace the flapper. Install the
cover O‐ring and secure the cover with the pre­
viously removed hardware.
LUBRICATION
Seal Assembly
(Figure 6)
Fill the seal cavity through the hole for the vented
plug (11) with SAE No. 30 non‐detergent oil to the
line on the sight gauge (25). Check the oil level reg­
ularly and refill as required. When lubricating a dry
seal cavity, add approximately approximately 112
U.S. ounces (3,3 liters) of oil to level indicated.
NOTE
The white reflector in the sight gauge must be posi­
tioned horizontally to provide proper drainage.
Bearings
(Figure 6)
The bearing housing was fully lubricated when
shipped from the factory. Check the oil level regu­
larly through the sight gauge (25A)
and maintain it
at the midpoint of the gauge. When lubrication is
required, remove the air vent (13) and add SAE No.
30 non‐detergent oil through the opening. When
lubricating a dry (overhauled) bearing housing, fill
the bearing cavity with approximately 18 ounces
(532 ml) of oil. Clean and reinstall the air vent. Do
not over‐lubricate. Over‐lubrication can cause the
bearings to over‐heat, resulting in premature bear­
ing failure.
NOTE
The white reflector in the sight gauges must be po­
sitioned horizontally to provide proper drainage.
Under normal conditions, drain the bearing hous­
ing once each year and refill with clean oil. Change
the oil more frequently if the pump is operated con­
tinuously 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.
Engine
Consult the literature supplied with the engine, or
contact your local power unit representative.