Gorman-Rupp Pumps 02K52-B 1255789 and up - Manual (Page 26)

OM-01163 0 SERIES
MAINTENANCE & REPAIR PAGE E - 7
Inspect the seal components for wear, scoring,
grooves, and other damage that might cause leak­
age. If any components are worn, replace the com­
plete seal; never mix old and new seal parts.
If a replacement seal is being used, remove it from
the container and inspect the precision finished
faces to ensure that they are free of any foreign
matter.
To ease installation of the seal, lubricate the bel­
lows with water or a very small amount of light lu­
bricating oil, and apply a drop of light lubricating oil
on the finished faces. Assemble the seal as follows,
(see Figure 2).
BEARING
HOUSING
IMPELLER
SHAFT
IMPELLER
SPRING
RETAINER
DRIVE BAND
BELLOWS
STATIONARY
SEAT
ROTATING
ELEMENT
STATIONARY
ELEMENT
IMPELLER
SHIMS
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.
Lay the intermediate bracket (20) on a flat surface
with the impeller side facing up. Subassemble the
stationary seat and use even pressure to press this
subassembly into the intermediate bracket until it
seats squarely against the shoulder bore.
Carefully slide the assembled bracket and station­
ary seal element over the shaft. Secure the inter­
mediate to the bearing housing with the hardware
(9, 10 and 11).
Subassemble the rotating element into the retainer
and bellows. Lubricate the I.D. of the bellows with
water, and slide this subassembly onto the shaft
until the polished faces contact. 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 vane plate scroll.
To verify the impeller positioning, measure the
vane plate and impeller as shown in Figure 3. Use
these measurements to calculate the required im­
peller location (dimension E). Add or remove im­
peller adjusting shims (15) until dimension E is ob­
tained.