Gorman-Rupp Pumps 04E1-GA 1171927 and up - Manual (Page 27)

OM−03745 0 SERIES
MAINTENANCE & REPAIR PAGE E − 7
Inspect the seal components for wear, scoring,
grooves, and other damage that might cause leak-
age. Clean and polish the pinion shaft, or replace it
if there are nicks or cuts on either end (see GEAR-
BOX DISASSEMBLY). If any components 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 sta-
tionary seat O-ring, bellows and pinion shaft 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 follows, (see Figure 2).
O-RING
STATIONARY
SEAT
PUMP CASING
ROTATING
ELEMENT
BELLOWS
IMPELLER
IMPELLER
KEY
SPRING
DRIVE
BAND
RETAINER
IMPELLER
SHAFT
IMPELLER
ADJUSTING
SHIMS
Figure 2. 25271−192 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 pinion shaft (46) for distortion, nicks,
scratches, or damage to the shaft keyway. Dress
small nicks or burrs with a fine file or emery cloth. If
excessive wear exists or the shaft is defective, refer
to GEARBOX DISASSEMBLY and replace the
shaft.
Lubricate the stationary seat O-ring with light oil
and install it in the groove in the stationary seat.
Use thumb pressure to press this subassembly
into the pump casing until fully seated. Be careful
not to damage the seal face. After installation, wipe
the seal face in a concentric pattern with a clean,
lint-free cloth to remove any fingerprints.
NOTE
It is recommended that a tapered sleeve (see Fig-
ure 3) be installed over the shaft keyway to ease in-
stallation of the rotating portion of the seal. This tool
can be made from steel tubing or black pipe.