Gorman-Rupp Pumps 04C3-B 407671 and up - Manual (Page 28)

0 SERIES OM-01218
MAINTENANCE & REPAIR PAGE E - 8
IMPELLER
SHAFT
SEAL
PLATE
ROTATING
ELEMENT
RETAINER
SPRING
IMPELLER
ADJUSTING
SHIMS
IMPELLER
BELLOWS
SHAFT
SLEEVE
O‐RING
STATIONARY
SEAT
SPRING
HOLDER
Figure 2. Seal Assembly
This seal is not designed for operation at
temperatures above 160
_F (71_C). Do not
use at higher operating temperatures.
Position the seal plate (13) on a flat surface with the
impeller side facing up. If the wear ring (12) was re­
moved, press the replacement ring into the seal
plate until it seats squarely against the bore shoul­
der.
The wear ring must seat squarely in the
seal plate bore or binding and/or exces­
sive wear will result.
Subassemble the O‐ring onto the stationary ele­
ment and use even pressure to press this subas­
sembly into the seal plate until it seats squarely
against the shoulder bore
Carefully slide the assembled seal plate and sta­
tionary seal element over the shaft. Use caution not
to nick or damage the stationary seat on the shaft
threads. Temporarily secure the seal plate to the
pedestal (24) using two capscrews and nuts (not
supplied).
Lubricate the I.D. of the bellows with water, and
slide the rotating portion of the seal over the shaft
sleeve until the seal face is just flush with the un­
dercut end of the sleeve.
Slide the assembled shaft sleeve and rotating por­
tion of the seal onto the shaft until the polished
faces contact. Continue to push the sleeve through
the seal until it is fully seated against the shaft
shoulder.
Install the seal spring and spring holder (38).
Impeller Installation
Inspect the impeller and replace it if cracked or
badly worn.
For maximum pump efficiency, the impeller should
be centered within the volute scroll.