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Gorman-Rupp Pumps SFV4A 1476537 and up User Manual

Page 35

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OM-06401

SF SERIES

PAGE E - 9

MAINTENANCE AND REPAIR

Most cleaning solvents are toxic and
flammable. Use them only in a well ven­
tilated area free from excessive heat,
sparks, and flame. Read and follow all
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

STATIONARY

ELEMENT

SEAL

RETAINING RING

SEAL PLATE

STATIONARY

SEAL SEAT

SPRING

BELLOWS AND

RETAINER ASSY

SPRING

RETAINER

ROTATING

ELEMENT

SPRING

CENTERING

WASHER

STATIONARY

ELEMENT

SHIM SET

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.