Gorman-Rupp Pumps PA4B60-4045H 1497876 and up - Manual (Page 42)

PA SERIES OM−06228
MAINTENANCE & REPAIR PAGE E − 22
previously removed hardware (9, 10 and 11) to se-
cure the discharge check valve assembly and gas-
ket (8) to the pump assembly (1).
Priming Chamber Assembly And Installation
(Figure 7)
Clean and inspect the components of the priming
valve (1). Inspect the linkage and ensure the orifice
button (not shown) squarely engages the valve
seat. Replace 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 (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 (1 and 2).
(Figure 6)
Install the baffle (7) and gasket (6) 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 (4 and 5).
Reconnect the suction piping to the hopper spool
and the air discharge tubing to the priming cham-
ber assembly.
Final Pump Assembly
(Figure 4)
Turn the shaft to make sure that the impeller is not
binding or scraping. If it does, check the installa-
tion of the wear ring and balance ring, or remove
adjusting shims until the impeller rotates freely
when the pump is fully assembled.
Be sure the pump and intermediate are secure to
the engine and the base.
Install the suction and discharge lines and open all
valves. Make certain that all piping connections are
tight, properly supported and secure.
Be sure the pump and engine have been properly
lubricated, see LUBRICATION.
LUBRICATION
(Figure 4)
Seal Assembly
Check the oil level regularly through the sight
gauge (8)
and maintain it at the middle of the
gauge. When lubrication is required, add SAE No.
30 non-detergent
oil through the hole for the air
vent (6). Do not over-lubricate..
NOTE
The white reflector in the sight gauge must be posi-
tioned horizontally to provide proper drainage.
When lubricating a dry seal cavity, add approxi-
mately 6 quarts (5,7 L) of oil. Check the oil level reg-
ularly and refill as required.
To ensure lubrication of the seal assembly,
do not allow the oil level to drop below the
line on the sight gauge.
Bearings
The intermediate was fully lubricated when
shipped from the factory. Under normal conditions,
add three shots of No. 0 lithium base grease from a
grease gun through the grease fitting (10) after
each 250 hours of operation or once each month,
whichever comes first. Do not over-lubricate. Over-
lubrication can cause the bearing to over-heat, re-
sulting in premature bearing failure.