Gorman-Rupp Pumps 03E1-B 450930 and up - Manual (Page 27)

0 SERIES OM-01186
MAINTENANCE & REPAIR PAGE E - 8
IMPELLER
SHAFT
SEAL
PLATE
ROTATING
ELEMENT
RETAINER
SPRING
IMPELLER
ADJUSTING
SHIMS
IMPELLER
BELLOWS
SHAFT
SLEEVE
O‐RING
STATIONARY
ELEMENT
Figure 3. Seal Assembly
This seal is not designed for operation at
temperatures above 160
_F (71_C). Do not
use at higher operating temperatures.
Lay the seal plate (5) on a flat surface with the im­
peller side facing up.
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. Temporarily
secure the seal plate to the pedestal with two caps­
crews and nuts (not supplied).
Subassemble the rotating element into the retainer
and bellows. Lubricate the I.D. of the bellows with
water, and slide this subassembly over the shaft
sleeve until the seal face is just flush with the under­
cut end of the sleeve.
Slide the assembled shaft sleeve and rotating por­
tion of the seal and 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.
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.
To verify the impeller positioning, measure the
pump casing and impeller as shown in Figure 4.
Use these measurements to calculate the required
impeller location (dimension E). Add or remove im­
peller adjusting shims (11) until dimension E is ob­
tained.