Gorman-Rupp Pumps S4A1-E25 460/3 1396155 and up - Manual (Page 34)

S SERIES PUMPS OM-06098
MAINTENANCE AND REPAIR PAGE E - 8
Lower Seal Removal
(Figures E-1 and E-3)
Carefully remove the seal spring. Lubricate the ro­
tor shaft (40) and work oil under the bellows as­
sembly. Use the hooked ends of two stiff wires to
hook the retainer and pull the rotating portion of the
seal off the shaft.
To remove the stationary portion of the seal, use a
pair of screwdrivers to pry the diffuser (1) out of the
intermediate (51). Slide the diffuser off the shaft.
Remove and discard the diffuser gasket (9). Place
a clean cloth on a flat surface and place the diffuser
on the cloth with the impeller side down. Use a drift
pin or screwdriver to press on alternate sides of the
stationary seat until the stationary seat and O‐rings
are removed.
If no further disassembly is required, proceed to
the appropriate areas in PUMP END REASSEMB­
LY.
Upper Seal Removal
(Figures E-1 and E-3)
Unless cracked or otherwise worn, it is not neces­
sary to remove the intermediate (51) for access to
the upper seal assembly (4).
NOTE
Do not attempt to loosen the hardware (47, 48, 49
and 50) securing the bearing cap (43) and the inter­
mediate (51) at this time (see MOTOR DISASSEM­
BLY). The rotor shaft and bearings could be dam­
aged.
Remove the seal retaining ring (34) using snap ring
pliers. Use caution when removing the retaining
ring; tension on the seal spring will be released.
Remove the spring retainer and seal spring.
Lubricate the rotor shaft (40) and work oil under the
bellows. Use the hooked ends of two stiff wires to
hook the retainer and pull the rotating portion of the
seal off the shaft.
Slide the hooked ends of two wires along the shaft
and under the stationary seal seat. Hook the back
side of the seat and pull it from the intermediate
bore.
If no further disassembly is required, proceed to
the appropriate areas in PUMP END REASSEMB­
LY.
NOTE
Do not disassemble the motor unless it is neces­
sary and a clean, well‐equipped shop is available. If
the motor housing components are to be serviced,
see MOTOR DISASSEMBLY in this section. Do not
reassemble the end components at this time.
PUMP END REASSEMBLY
NOTE
Reuse of old O‐rings, gaskets, or shaft seal parts
will result in premature leakage or reduced pump
performance. It is strongly recommended that new
gaskets and shaft seal assemblies be used during
reassembly (see the parts lists for numbers).
Cleaning And Inspection Of Pump Parts
(Figure E-1)
With the pump inverted, stuff a clean tissue into the
stationary seal seat bore of the intermediate (51) or
wrap a small rag around the shaft to prevent for­
eign material from entering the motor cavity.
Carefully inspect any O‐rings or gaskets before re­
moval and cleaning to determine if a proper seal
and compression existed prior to disassembly. If
sealing was faulty or questionable, the cause must
be determined and corrected before reassembly.
Replace any parts as required.
Thoroughly clean all reuseable parts with a soft
cloth soaked in cleaning solvent. Remove all O‐
rings and gaskets, and clean the sealing surfaces
of dirt or gasket material. Be careful not to scratch
gasket surfaces.
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.