Gorman-Rupp Pumps 14D52-12LD477 S/G 1344732 and up - Manual (Page 28)

10 SERIES OM−05968
MAINTENANCE & REPAIR PAGE E − 10
ponents are worn, replace the complete 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 O-
rings, sleeve and bellows with water or a very small
amount of oil, and apply a drop of light lubricating
oil on the finished faces. Assemble the seal as fol-
lows, (see Figure 4).
STUB
SHAFT
IMPELLER
IMPELLER
SHIMS
SHAFT
SLEEVE
SPRING RETAINER
STATIONARY
ROTATING
ELEMENTS
BELLOWS
ROTATING ELEMENT
SEAL SEATS
INTERMEDIATE
O-RING
STATIONARY
SEAT
SPRING
SLEEVE
O-RING
SEAL RETAINER
Figure 4. 25285−856 Seal Assembly
This seal is not designed for operation at
temperatures above 160
_F (71_C). Do not
use at higher operating temperatures.
Inspect the stub shaft for excessive wear or dam-
age. Small scratches or nicks may be removed
with a fine file or emery cloth. If the stub shaft is bent
of excessively worn, replace the drive assembly
(12).
Position the intermediate against the engine bell-
housing, and secure it with the previously removed
hardware (not shown).
Assemble the O-ring into the stationary seat. Press
the stationary seat into the intermediate bore until
fully seated. 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 as the I.D. of the
seal spring.
Subassemble the rotating element into the retainer
and bellows. Apply a drop of light oil on the preci-
sion finished faces; never use grease. Use even
pressure to carefully press this subassembly onto
the sleeve (15) until the rotating element is just
flush with the chamfered end of the sleeve.
To prevent damaging the shaft sleeve O-ring (14)
on the shaft threads, stretch the O-ring over a piece
of tubing 1-9/32 inch I.D. x 1-13/32 inch O.D. x 2-in-
ches long (32 mm x 36 mm x 51 mm). Slide the tube
over the shaft threads, then slide the O-ring off the