PA SERIES PUMPS
MR−05861
MAINTENANCE & REPAIR
PAGE C − 18
hardware (6 and 7) secure the discharge check
valve assembly and gasket (8) to the pump assem-
bly (1).
Priming Chamber Assembly And Installation
(Figure C−4)
Clean and inspect the components of the priming
valve (1). Inspect the linkage and ensure the orifice
button (2) squarely engages the valve seat. Re-
place the orifice button if required (see
Priming
Chamber Removal and Disassembly
for orifice
button removal).
If the orifice button was removed, screw the new
orifice button into the linkage bar until fully seated.
Align the hole in the linkage bar with the holes in the
bracket and reinstall the pivot pin. Secure the pivot
pin with the previously removed e-clip".
Adjust the orifice button seating as necessary by
screwing the orifice button into or out of the linkage
bar. Proper adjustment is achieved when the ori-
fice button fully seats against the orifice before the
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 (5) and priming valve gasket (7).
Lower the float into the priming chamber (6) and
secure the priming valve with the previously re-
moved hardware (3 and 4).
(Figure C−1)
Install the previously removed baffle and gasket on
the hopper spool (5) and use a sling and suitable
lifting device to position the priming chamber as-
sembly (10) on the spool. Secure the priming
chamber assembly with the previously removed
hardware.
Reconnect the suction piping to the hopper spool
and the air discharge tubing to the priming cham-
ber assembly.
LUBRICATION
(Figure C−2)
Seal Assembly
Fill the bottle oiler (35) to the line on the glass with
SAE No. 30 non-detergent oil. When lubricating a
dry seal cavity, add approximately 3 quarts (2,8 L)
of oil through the air vent (33) to level indicated.
Check the oil level regularly and refill as required.
Bearings
The intermediate was fully lubricated when
shipped from the factory. Check the oil level regu-
larly through the sight gauge (40)
and maintain it at
the midpoint of the gauge. When lubrication is re-
quired, remove the air vent (11) and add SAE No.
30 non-detergent oil through the opening. When
lubricating a dry (overhauled) intermediate, fill the
bearing cavity with approximately 7.5 ounces (222
ml.). Clean and reinstall the air vent.
Do not
over-lu-
bricate. 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.
Power Unit
Consult the literature supplied with the power unit,
or contact your local power unit representative.
