Gorman-Rupp Pumps PA6F60-4045T 1521221 and up - Manual (Page 41)

OM-06189 PA SERIES
MAINTENANCE & REPAIR PAGE E - 19
IMPELLER
SHAFT
SPRING
IMPELLER
RETAINER
O‐RING
BELLOWS
ROTATING
ELEMENT
STATIONARY
SEAT
SHAFT
SLEEVE
SHAFT
KEY
IMPELLER
SHIMS
Figure 8. Seal Assembly
The seal is not designed for operation at
temperatures above 160
_F (71_C). Do not
use at higher operating temperatures.
Install the O‐ring (29) in the shaft sleeve (53) and
lubricate it with light oil. Slide the V‐ring (8) onto the
sleeve with the lip toward the impeller end of the
sleeve, then slide the sleeve onto the shaft until it is
fully seated against the shaft shoulder.
Lubricate the stationary seat O‐ring with water or
light oil. Position the back plate with the impeller
side up and press this stationary seat into the front
of the back plate until it seats squarely against the
bore shoulder.
Carefully position the back plate and stationary
seat over the shaft and secure it to the bracket (9)
with the previously removed hardware (40 and 41).
Be careful not to damage the stationary element
on the shaft keyway. Make sure the lip on the V‐ring
seats against the lip seal (7).
Lubricate the O.D. of the seal sleeve with a small
amount of light oil and slide the rotating subas­
sembly (consisting of rotating element, bellows
and retainer) onto the sleeve until the sealing faces
contact.
Install the seal spring. Lubricate the seal as indi­
cated in LUBRICATION after the impeller and re­
maining pump components are installed.
Impeller Installation
(Figure 5)
Inspect the impeller, and replace it if cracked or
badly worn.
Install the same thickness of impeller adjusting
shims (52) as previously removed. Install the shaft
key (38) and position the impeller on the shaft. See
Figure 9, and use a section of pipe, washers and a
long, 5/8-11 UNC capscrew to press the impeller
onto the shaft until fully seated (do not use the im­