MR−05740
PA SERIES PUMPS
MAINTENANCE & REPAIR
PAGE C − 21
Disengage the hardware (9 and 10), remove the
shims (11) and reinstall the hardware (9 and 10).
Reach through the suction opening and measure
the clearance between the wear ring and impeller.
Adjust the wear ring-to-impeller clearance as pre-
viously described in
Wear Plate And Back Cover
Plate Installation And Adjustment
.
LUBRICATION
Seal Assembly
(Figure C−5)
Fill the seal cavity through the hole for the vented
plug (8) with SAE No. 30 non-detergent oil. Check
the oil level regularly at the sight gauge (27) and re-
fill as required. When lubricating a dry seal cavity,
add approximately approximately 8 U.S. quarts
(7,6 liters) of oil to the center of the sight gauge.
NOTE
The white reflector in the sight gauge must be posi-
tioned horizontally to provide proper drainage.
Bearings
(Figure C−5)
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 midpoint of the gauge. When lubrication is re-
quired, remove the air vent (6) and add SAE No. 30
non-detergent oil through the opening. When lubri-
cating a dry (overhauled) bearing housing, fill the
bearing cavity with approximately 40 ounces (1,2
liters) 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 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.
Power Unit
Consult the literature supplied with the power unit,
or contact your local power unit representative.
