Gorman-Rupp Pumps SE1 1/2B3-E.33 12V 1483930 and up - Manual (Page 20)

OM−06490 SE SERIES
MAINTENANCE & REPAIR PAGE E − 6
STATIONARY
CUP SEAT
IMPELLER
ROTOR
SHAFT
SPRING
CENTERING
WASHER
SPRING
IMPELLER
SHIMS
BELLOWS
PUMP
CASING
STATIONARY
ELEMENT
ROTATING
ELEMENT
BELLOWS
RETAINER
Figure 2. Seal Assembly
Seal Installation
(Figures 1 and 2)
If a new seal assembly is to be installed, do not un-
wrap it until time of installation. Cleanliness of seal
components is critical, especially the seal faces.
Clean the rotor shaft and seal cavity area of the
pump casing (5). 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. Apply a light coat-
ing of oil to the bore.
NOTE
When pressing seal components onto the shaft,
use hand pressure only. A push tube cut from a
length of plastic pipe will aid in installing seal com-
ponents. The I.D. of the push tube should be ap-
proximately the same as the I.D. of the seal spring.
Subassemble the stationary element in the station-
ary cup seat. Position this subassembly in the cas-
ing bore with the sealing face up, and cover the
seal face with a clean, lint-free cloth. Use your
thumbs to press the assembly into the bore. Apply
equal pressure on opposite sides until the seat
contacts the bore shoulder. Remove the tissue and
inspect the seal face to ensure that it is clean and
dry. If cleaning is necessary, use a clean lint-free
cloth to wipe lightly in a concentric pattern.
Lubricate and install a new casing tube O-ring (2)
on the pump casing. Carefully slide the pump cas-
ing over the shaft and use a soft-faced mallet to tap
the casing into the casing tube (1A) until fully
seated. Secure the pump casing to the motor with
the hardware (3 and 4).
Be certain the seal face of the rotating element is
free of grit or surface damage. Apply a light coat-
ing of oil to the seal seating surface on the shaft
and the I.D. of the bellows. Inspect the seal face to
ensure that it is clean and dry. If cleaning is neces-
sary, use a clean lint-free cloth to wipe in a concen-
tric pattern.
Slide the seal rotating portion onto the lubricated
shaft as shown in Figure 2. Apply firm, steady pres-
sure on the seal retainer until it slides down the
shaft.