Gorman-Rupp Pumps SFDV4B 1520149 and up - Manual (Page 33)

OM-06407 SF SERIES
PAGE E - 9 MAINTENANCE AND REPAIR
precautions printed on solvent contain­
ers.
Inspect the rotor shaft (3, Figure E-2) for dam­
aged threads, scoring, or nicks. Remove nicks and
burrs with a fine file or hand honing stone to restore
original contours. If the shaft is bent or severely
damaged, the rotor and shaft must be replaced as
an assembly (see MOTOR DISASSEMBLY).
Neither of the shaft seal assemblies should be re­
used because wear patterns on the finished faces
cannot be realigned during reassembly. This could
result in premature failure. If necessary to reuse an
old seal in an emergency, carefully wash all me­
tallic parts in fresh cleaning solvent and allow to dry
thoroughly.
Handle the seal parts with extreme care to prevent
damage. Be careful not to contaminate the preci­
sion finished faces; even fingerprints on the faces
can shorten seal life. If necessary, clean the faces
with a non‐oil based solvent and a clean, lint‐free
tissue. Wipe lightly in a circular pattern to avoid
scratching the faces.
Inspect the seal components for wear, scoring,
grooves, and other damage that might cause leak­
age. If any components are worn, replace the com­
plete seal; never mix old and new seal parts.
Install the shaft seals as illustrated in Figure E-3.
STATIONARY
SEAL SEAT
SPRING
IMPELLER
BELLOWS AND
RETAINER ASSY
ROTOR
SHAFT
ROTATING
ELEMENT
SEAL
RETAINING RING
SEAL PLATE STATIONARY
SEAL SEAT
SPRING
BELLOWS AND
RETAINER ASSY
SPRING
RETAINER
ROTATING
ELEMENT
SPRING
CENTERING
WASHER
O‐RING
SHIM SET
O‐RING
Figure E-3. Upper And Lower Seal Assemblies
The seal assemblies are not designed for
operation at temperatures above 104
_F
(40
_C). Do not use at higher operating
temperatures.
Upper Seal Installation
(Figures E-2 and E-3)
Do not unwrap a new seal assembly until time of
installation. Cleanliness of seal components is criti­
cal, especially the seal faces.