Gorman-Rupp Pumps PA6B60-6068H 1421583 and up - Manual (Page 41)

OM−06250 PA SERIES
MAINTENANCE & REPAIR PAGE E − 19
O-RING
IMPELLER
STATIONARY
SEAT
ROTATING ELEMENT
BELLOWS
IMPELLER
SHIMS
IMPELLER
SPRING
RETAINER
SHAFT
DRIVE BAND
PUMP CASING
SHAFT SLEEVE
SHAFT SLEEVE
O-RING
IMPELLER
KEY
Figure 9. 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 into the pump casing until it seats squarely
against the bore shoulder. A push tube cut from a
length of plastic pipe would aid this installation.
The O.D. of the pipe should be approximately the
same diameter as the O.D. of the seal spring.
Lubricate the shaft sleeve O-ring (6) and slide it
onto the shaft until it seats against the shaft shoul-
der.
Use even pressure to carefully press this rotating
portion of the seal onto the lubricated sleeve (5) un-
til the seal face is just flush with the chamfered end
of the sleeve.
Slide the assembled shaft sleeve and rotating por-
tion 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 shoul-
der.
Install the seal spring.
Impeller Installation
(Figure 4)
If the balance ring (38) 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
suction head; otherwise binding and/or ex-
cessive wear will result.