Gorman-Rupp Pumps PA4A60C-C2.2T 1394774 and up - Manual (Page 46)

PA SERIES OM-05783
MAINTENANCE & REPAIR PAGE E - 24
SEAL PLATE
O‐RINGS
IMPELLER
SHAFT
STATIONARY
SEAT
STATIONARY
ELEMENT
ROTATING
ELEMENT
DRIVE BAND
BELLOWS
IMPELLER
SHIMS
IMPELLER
SPRING
RETAINER
INTEGRAL
SHAFT
SLEEVE
SLEEVE
O‐RING
SPRING
CENTERING
WASHER
SHEAR
RING
(SHEARED)
Figure 12. 46513-151 Cartridge Seal Assembly
This seal is not designed for operation at
temperatures above 160
_
F (71
_
C). Do not
use at higher operating temperatures.
If the seal plate was removed, install the seal plate
gasket (5). Position the seal plate over the shaft
and secure it to the bearing housing with the hard­
ware (7 and 8).
To prevent damaging the shaft sleeve O‐ring (26)
on the shaft threads, stretch the O‐ring over a piece
of tubing. The I.D. of the tubing must be slightly
larger than the O.D. of the shaft. To ease installation
the tubing wall should be as thin as possible. The
length should be long enough to cover the threads
on the end of the shaft. Slide the tube over the shaft
threads, then slide the O‐ring off the tube and onto
the shaft. Remove the tube, and continue to slide
the O‐ring down the shaft until it seats against the
shaft shoulder.
When installing a new cartridge seal assembly,
remove the seal from the container, and remove
the mylar storage tabs from between the seal
faces.
New cartridge seal assemblies may be
equipped with mylar storage tabs between
the seal faces. These storage tabs must be
removed before installing the seal.
Lubricate the external stationary seat O‐ring with
light oil. Slide the seal assembly onto the shaft until
the external stationary seat O‐ring engages the
bore in the seal plate.
Clean and inspect the impeller as described in Im­
peller Installation and Adjustment. Install half of
the set of impeller shims (2) provided with the seal,
and screw the impeller onto the shaft until it is
seated against the seal (see Figure 13).