Gorman-Rupp Pumps PAV3C60C-B-E10 575/3 All serial numbers - Manual (Page 50)

OM-06502 PA SERIES
MAINTENANCE & REPAIR PAGE E - 23
If the complete priming valve is being replaced,
screw the replacement valve onto the nipple (8) in
the priming hopper cap (7).
Clean the strainer screen (6) and install it in the
suction spool. Install the priming hopper gasket (5)
and secure the priming valve and priming hopper
cap to the suction spool with the previously remove
hardware (13 and 14).
Reconnect the air discharge tubing to the priming
chamber assembly.
LUBRICATION
(Figure 5)
Seal Assembly
Before starting the pump, remove the vented plug
(17) and fill the seal cavity with approximately 36
ounces (1 liter) of SAE No. 30 non‐detergent oil or
to the center of the sight gauge (13A). Clean and
reinstall the vented plug. Maintain the oil level at the
middle of the sight gauge.
NOTE
The white reflector in the sight gauge must be posi­
tioned horizontally to provide proper drainage.
Bearings
(Figure 5)
The bearing housing was fully lubricated when
shipped from the factory. Check the oil level regu­
larly through the sight gauge (13) and maintain it at
the midpoint of the gauge. When lubrication is re­
quired, remove the pipe plug (18) from the elbow
(32) and add SAE No. 30 non‐detergent oil through
the opening. When lubricating a dry (overhauled)
bearing housing, fill the bearing cavity with approx­
imately 15 ounces (0,44 liter) of oil, or to the middle
of the sight gaute (13). Clean and reinstall the pipe
plug. Do not over‐lubricate the bearing housing.
Over‐lubrication can cause the bearings to over‐
heat, resulting 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 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.