Gorman-Rupp Pumps T10A65S-6068T 1413937 and up - Manual (Page 48)

OM−06198 SUPER T SERIES
MAINTENANCE & REPAIR PAGE E − 21
PRESSURE RELIEF VALVE
MAINTENANCE
(Figure 3)
The suction head is equipped with a pressure relief
valve (35) to provide additional safety for the pump
and operator (refer to Liquid Temperature And
Overheating in OPERATION).
It is recommended that the pressure relief valve as-
sembly be replaced at each overhaul, or any time
the pump overheats and activates the valve. Never
replace this valve with a substitute which has not
been specified or provided by the Gorman-Rupp
Company.
Periodically, the valve should be removed for in-
spection and cleaning. When reinstalling the relief
valve, apply ‘Loctite Pipe Sealant With Teflon No.
592’, or equivalent compound, on the relief valve
threads. Position the valve as shown in Figure 3,
with the discharge port pointing down.
LUBRICATION
Seal Assembly
(Figure 4)
Before starting the pump, remove the vented plug
(10) and fill the seal cavity with approximately 85
ounces (2,5 liters) of SAE No. 30 non-detergent oil,
or to a level at the middle of the sight gauge (25).
Clean and reinstall the vented plug. Maintain the oil
at this level.
Bearings
(Figure 4)
The bearing housing was fully lubricated when
shipped from the factory. Check the oil level regu-
larly through the sight gauge (26) and maintain it at
the middle of the gauge. When lubrication is re-
quired, remove the vented plug (11) and add SAE
No. 30 non-detergent
oil through the hole until the
level is at the middle of the sight gauge. 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 gauge must be posi-
tioned horizontally to provide proper drainage.
Under normal conditions, drain the bearing hous-
ing once each year and refill with approximately 32
ounces (1 liter) clean oil. Change the oil more fre-
quently if the pump is operated continuously or in-
stalled 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 engine representative.