Gorman-Rupp Pumps PAV3C60C-B-E10 575/3 All serial numbers - Manual (Page 47)

PA SERIES OM-06502
MAINTENANCE & REPAIR PAGE E - 20
SEAL PLATE
O‐RINGS
IMPELLER
SHAFT
STATIONARY
SEAT
STATIONARY
ELEMENT
ROTATING
ELEMENT
BELLOWS
IMPELLER
SHIMS
IMPELLER
SPRING
RETAINER
INTEGRAL
SHAFT
SLEEVE
SLEEVE
O‐RING
SPRING
CENTERING
WASHER
SHEAR
RING
(SHEARED)
Figure 9. 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 (4) was removed, install the seal
plate O‐ring (25) and lubricate it with oil. Position
the seal plate over the shaft and secure it to the
bearing housing with the flat head capscrews (22).
To prevent damaging the shaft sleeve O‐ring (36)
on the shaft threads, cover the threads with electri­
cal or duct tape. Slide the O‐ring over the shaft until
it seats against the shaft shoulder. Remove the
tape covering the threads. Check to ensure that
the shaft threads are free of any tape residue and
clean as required before proceeding with seal
installation.
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.
Inspect the impeller, and replace it if cracked or
badly worn. Inspect the impeller screw (24) and
shaft threads for dirt or damage, and clean or dress
the threads as required.
Install the set of impeller shims (20) provided with
the seal and install the impeller key (31) in the shaft
keyway. Position the impeller keyway over the im­
peller key and press the impeller onto the shaft until
it is seated against the seal (see Figure 10).