Gorman-Rupp Pumps 11 1/2A3-KW1.5 3P 1214536 and up - Manual (Page 24)

10 SERIES OM−05203
MAINTENANCE & REPAIR PAGE E − 6
INTERMEDIATE
IMPELLER
SHAFT
STATIONARY
ELEMENT
ROTATING
ELEMENT
BELLOWS
IMPELLER
SHIMS
IMPELLER
SPRING
RETAINER
SHAFT
SLEEVE
SPRING
CENTERING
WASHER
STATIONARY
SEAT
SLINGER
RING
Figure 2. S1575 Seal Assembly
This seal is not designed for operation at
temperatures above 160
_F (71_C). Do not
use at higher operating temperatures.
Slide the slinger ring (17) onto the shaft. Install the
stationary element in the seat and press this sta-
tionary subassembly into the intermediate until ful-
ly seated. After installation, wipe the sealing face
lightly in a concentric pattern with a clean, lint-free
tissue.
Position the intermediate (22) and stationary sub-
assembly over the shaft and against the motor. Se-
cure the intermediate to the motor with the hard-
ware (20 and 21).
Slide the rotating subassembly (consisting of the
element, bellows and retainer) over the lubricated
shaft sleeve until the rotating element is just flush
with the chamfered end of the sleeve. Slide the
sleeve over the shaft until the sealing faces con-
tact. Continue to press the shaft sleeve through the
seal assembly until it seats squarely against the
shaft shoulder.
Install the seal spring and spring centering washer
(11).
Impeller Installation And Adjustment
Inspect the impeller, and replace it if cracked or
badly worn. Install the same thickness of impeller
shims (12) as previously removed. Apply Loctite
No. 243 on the impeller and shaft threads, then
screw the impeller onto the shaft until tight.
A clearance of .010 to .012 inch (0,25 to 0,30 mm)
between the impeller and the intermediate is nec-
essary for maximum pump efficiency. Measure this
clearance and add or remove impeller shims until
this clearance is reached.
Pump Casing Installation
Install the same thickness of pump casing gaskets
(23) as previously removed, and secure the pump
casing to the intermediate (22) with the nuts (14).
Do not fully tighten the nuts at this time.