OM-07089
S SERIES PUMPS
PAGE E - 9
MAINTENANCE AND REPAIR
assembly. Tag electrical circuits to pre
vent accidental start‐up.
Use
Only Genuine Gorman-Rupp
re
placement parts. Failure to do so may cre
ate a hazard and damage the pump or di
minish optimal pump performance. Any
such hazard, damage or diminished per
formance is not covered by the warranty.
NOTE
When appropriate recycling facilities are available,
the user should recycle components and fluids
when doing any routine maintenance / repairs and
also at the end of the pump’s useful life. All other
components and fluids shall be disposed of ac
cording to all applicable codes and regulations.
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.
All gaskets and most O‐rings
must
be replaced if
disturbed. Repair gaskets and O‐rings are listed in
the Parts List.
PUMP END DISASSEMBLY
Strainer Removal
(Figure E-1)
To remove the strainer screen (3), raise the pump
slightly, or lay it on its side and disengage the hard
ware (25) securing the base plate (1) and strainer
assembly to the 1st stage diffuser (8). Remove the
base plate and strainer screen. If the impeller (7) is
clogged, the debris can usually be removed with
out further disassembly.
Draining Oil From Seal And Motor Cavity
(
Figure E-2)
If any further disassembly is to be performed on the
pump, the seal and motor oil cavities must be
drained.
Let the pump cool before removing the
seal or motor cavity drain plugs. Pressure
built up within a hot pump could cause the
oil to spray out when the plug is removed.
Remove the plugs slowly and permit pres
sure to vent to atmosphere.
Lay the pump on its side with the pipe plugs (35)
facing up. Clean any dirt from around the plugs.
Remove the seal cavity drain plug (35), and install a
short 3/8‐inch NPT nipple in the hole. Tip the pump
and drain the seal oil into a
clean
container. In
spect the oil for water, dirt, or cloudy condition
which could indicate lower seal failure or poor gas
ket seal.
If motor problems are suspected, remove the mo
tor cavity drain plug (35) and use the short nipple to
drain the oil into a
clean
container. Inspect the oil
for a dark color which could indicate motor over
heating, dirt or water contamination. The presence
of dirt or water could indicate a breakdown in the
waterproof integrity of the motor cavity, probably
due to poor gaskets or seals.
Positioning Pump For Disassembly
(Figure E-2)
It is recommended that the pump be positioned
upside‐down during disassembly. To hold the
pump in the inverted position, rest the pump se
curely on blocks. Two brackets with lifting eyes
may be fabricated for this purpose as shown in Fig
ure E-4. Be careful not to damage the terminal
housing and cable assembly (65) while in this posi
tion. Use adequate equipment and personnel to
safely handle the pump until it is secured. If invert
