OM-06111
S SERIES PUMPS
PAGE E - 7
MAINTENANCE AND REPAIR
disturbed. Repair gaskets and O‐rings are listed in
the Parts List.
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.
PUMP END DISASSEMBLY
Strainer Removal
(Figure E-1)
To remove the strainer screen and base plate (7
and 8), raise the pump slightly, or lay it on its side
and disengage the hardware (9, 35 and 36) secur
ing the strainer and base plate to the intermediate
(27). If the impeller (14) is clogged, the debris can
usually be removed without further disassembly.
Draining Oil From Seal Cavity
(
Figure E-1)
If any further disassembly is to be performed on the
pump, the seal oil cavity must be drained.
Let the pump cool before removing the
seal cavity drain plug. Pressure built up
within a hot pump could cause the oil to
spray out when the plug is removed. Re
move the plug slowly and permit pressure
to vent to atmosphere.
Lay the pump on its side with the pipe plugs (28)
facing up. Clean any dirt from around the plugs.
Remove the pipe plug, and install a short 3/8‐inch
NPT nipple in the hole. Tip the pump and drain the
seal oil into a
clean
container. Inspect the oil for
water, dirt, or cloudy condition which could indi
cate lower seal failure or poor gasket seal.
Draining Oil From Motor Cavity
(
Figure E-1)
If motor problems are suspected, remove the mo
tor cavity drain plug (28), and install a short nipple
in the hole. Tip the pump and drain the motor oil
into a
clean
container. Inspect the oil for dark color
which could indicate motor overheating, water or
dirt contamination. The presence of dirt or water
could indicate a breakdown in the waterproof in
tegrity of the motor cavity, probably due to poor
gaskets or seals.
Positioning Pump For Disassembly
(Figure E-1)
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. Be careful not to damage the
pressure relief valve (42) and the terminal housing
and cable assembly (56) while in this position. Use
adequate equipment and personnel to safely han
dle the pump until it is secured. If inverting the
pump is not practical, lay the pump on its side and
secure it to prevent rolling.
Strainer Plate And Suction Head Removal
(Figure E-1)
Remove the hardware (18, 35 and 36) securing the
strainer plate (20) to the intermediate (27). Remove
the strainer plate. Discard the strainer plate gasket
(23) and the suction head O‐ring (10). Remove the
nylon locknuts (6) securing the suction head (11)
to the diffuser (19). Pull the suction head off the dif
fuser studs (40).
