Gorman-Rupp Pumps SF4A 1488019 and up - Manual (Page 35)

SF SERIES OM-06432
MAINTENANCE AND REPAIR PAGE E - 10
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.
Clean the rotor shaft (3) and seal cavity area of the
intermediate (8). Be sure the area is dry and free of
lint and dirt. Check the seal bore for burrs or nicks
that might prevent a good seal. Remove them with
a fine file or emery cloth to restore original con­
tours. If the shaft is bent or damaged, the complete
rotor and shaft must be replaced as an assembly.
Apply a light coating of oil to the bore of the inter­
mediate.
Position the intermediate with the impeller end
down on some wood blocks tall enough to allow for
installation of the rotor shaft through the intermedi­
ate.
Inspect the rotor shaft (3) and bearings (2 and 5) as
indicated in Bearing and Rotor Shaft Installation
in this section and replace any parts as necessary.
Slide the assembled shaft and bearings into the in­
termediate until the lower bearing seats squarely in
the intermediate bore. Secure the rotor and shaft to
the intermediate by installing the snap ring (4) in
the groove in the intermediate bore.
Install a new O‐ring (6) on the shoulder of the inter­
mediate.
With the motor housing and stator positioned up­
side down, carefully lower the assembled inter­
mediate, rotor shaft and bearings into the motor
housing until the female terminal (14) can be se­
curely attached to the male terminal (15) on the
moisture sensor.