Gorman-Rupp Pumps PA4B60-4045H 1497876 and up - Manual (Page 40)

PA SERIES OM−06228
MAINTENANCE & REPAIR PAGE E − 20
IMPELLER
SHAFT
SPRING
IMPELLER
RETAINER
BELLOWS
ROTATING
ELEMENT
STATIONARY
SEAT
SHAFT
SLEEVE
SHAFT
KEY
IMPELLER
SHIMS
SHAFT
SLEEVE
O-RING
O-RINGS
SPRING
HOLDER
STATIONARY
ELEMENT
Figure 9. 46512−048 Seal Assembly
This seal is not designed for operation at
temperatures above 160
_ F (71_ C). Do
not use at higher operating temperatures.
Inspect the pump casing and impeller shaft for
burrs or sharp corners and remove any that exist.
With the stationary seat O-ring lubricated and
installed in the stationary seat, press the stationary
seat and element into the pump casing until it seats
squarely against the bore shoulder. Be careful not
to damage the stationary element. A push tube cut
from a length of plastic pipe would aid this installa-
tion. The O.D. of the pipe should be approximately
the same diameter as the O.D. of the seal spring.
NOTE
If the pump casing has not been installed, position
the casing over the shaft and against the intermedi-
ate, using caution not to damage the seal stationary
seat and element. Secure the casing to the inter-
mediate with the hardware (30 and 31).
Lubricate the shaft sleeve O-ring (46) and slide it
onto the shaft.
Subassemble the rotating element into the retainer
and bellows. Use even pressure to carefully press
this subassembly onto the lubricated sleeve (45)
until the seal face is just flush with the chamfered
end of the sleeve.
Slide the assembled sleeve and rotating portion of
the seal onto the shaft until the seal faces contact.
Continue to push the sleeve through the seal until it
seats squarely against the shaft shoulder.
Install the seal spring and spring holder (47).
Impeller Installation
(Figure 4)
If the balance ring (35) was removed, press the re-
placement ring into the pump casing as described
in Pump Casing Installation.
The balance ring must seat squarely in the