Gorman-Rupp Pumps 13E2-12LD477 S/G 1345995 and up - Manual (Page 30)

10 SERIES OM−05966
MAINTENANCE & REPAIR PAGE E − 12
STUB
SHAFT
SEAL
LINER
IMPELLER
IMPELLER
SHIMS
SPACER
SLEEVE
PACKING RINGS
WASHER
STATIONARY
ROTATING
ELEMENTS
STATIONARY
SPRING
SEAL SEATS
INTERMEDIATE
ННН
ННН
ННН
ННН
НН
НН
WASHER
НН
НН
STATIONARY
Figure 5. GS1000C Seal Assembly
This seal is not designed for operation at
temperatures above 110
_F (43_C). Do not
use at higher operating temperatures.
Position the inboard rotating element on the shaft
with the chamfered side toward the shaft shoul-
der and slide it on until fully seated.
Subassemble the inboard stationary seat, packing
ring and stationary washer. Press this unit into the
lubricated seal liner until the seal faces contact. A
push tube cut from a length of plastic pipe would
aid this installation. The I.D. of the tube should be
approximately the same size as the I.D. of the seal
spring.
Install the spacer sleeve and seal spring.
Subassemble the outboard stationary seat, pack-
ing ring and stationary washer. Press this unit into
the lubricated seal liner. Install the outboard rotat-
ing element with the chamfered side toward the
impeller.
After the impeller and grease cup have been in-
stalled, lubricate the seal as indicated in LUBRI-
CATION at the end of this section.
Impeller Installation And Adjustment
(Figure 3)
Inspect the impeller, and replace it if cracked or
badly worn. Install the same thickness of impeller
shims as previously removed, and screw the im-
peller onto the shaft until tight.
A clearance of .020 to .040 inch (0,51 to 1,02 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.