Gorman-Rupp Pumps PA10A60-4045H 1452219 thru 1484415 - Manual (Page 40)

PA SERIES OM−06344
MAINTENANCE & REPAIR PAGE E − 20
IMPELLER
SHAFT
IMPELLER
SHIMS
O-RING
IMPELLER
SPRING
RETAINER
STATIONARY
SEAT
BELLOWS
SEAL PLATE
STATIONARY
ELEMENT
ROTATING
ELEMENT
Figure 9. Seal Assembly
This seal is not designed for operation at
temperatures above 160
_F (71_C). Do not
use at higher operating temperatures.
Lubricate the stationary seat O-ring with water or
light oil. Press the stationary seat and element into
the seal plate (6) until fully seated.
Position the seal plate over the shaft and temporari-
ly secure it to the intermediate (14) with four
1/2−UNC x 2-inch long capscrews and hex nuts
(not supplied). Be careful not to damage the sta-
tionary portion of the seal on the shaft threads.
Lubricate the shaft with a small amount of light oil
and slide the rotating subassembly (consisting of
rotating element, bellows and retainer), onto the
shaft until the seal faces touch.
Install the seal spring. Lubricate the seal as indi-
cated in LUBRICATION after the impeller is in-
stalled.
Impeller Installation And Adjustment
(Figure 4)
Inspect the impeller (2) and replace it if cracked or
badly worn.
The shaft and impeller threads must be
completely clean before reinstalling the im-
peller. Even the slightest amount of dirt on
the threads can cause the impeller to seize
to the shaft, making future removal difficult
or impossible without damage to the im-
peller or shaft.
Install the same thickness of impeller adjusting
shims (4) as previously removed and screw the im-
peller assembly onto the shaft until tight, making
sure the seal spring seats squarely over the shoul-
der on the back of the impeller.
NOTE
At the slightest sign of binding, immediately back