OM--05096
S SERIES
MAINTENANCE & REPAIR
PAGE E -- 6
PUMP MAINTENANCE AND REPAIR
Review all SAFETY information in Section A.
Follow the instructions on all tags, label and de-
cals attached to the pump.
The following maintenance and repair instructions
are provided separately for each individual pump
model, and are keyed to the Pump Model views
(Figures 1 and 2), and the accompanying parts
lists.
Before attempting to service the pump, unplug the
pump power cable to ensure that the pump will re-
main inoperative.
Before attempting to open or service the
pump:
1. Familiarize yourself with this man-
ual.
2. Unplug the pump power cable to
ensure that the pump will remain
inoperative.
3. Allow the pump to completely cool
if overheated.
Use a rope or chain attached to the handle on the
pump to remove the pump from the sump and
move it to a suitable location for service. It is not
necessary to disconnect a flexible discharge hose
before removing the pump. If rigid discharge pip-
ing is used, disconnect the piping before attempt-
ing to move the pump.
Do not attempt to lift the pump by the
power cable or piping. Attach proper
lifting equipment to the handle on the
pump.
Select a suitable location, preferably indoors, to
perform the degree of maintenance required. If the
motor housing is to be opened, the work must be
done in a clean, well-equipped shop. All mainte-
nance functions must be done by qualified person-
nel.
Obtain the services of a qualified elec-
trician to service the electrical compo-
nents of this pump.
Check the chart in
TROUBLESHOOTING
, Section
D, to determine the nature of the pump problem. If
the problem is mechanical in nature, such as worn
pump parts, seal replacement, etc., refer to the ap-
propriate
PUMP END DISASSEMBLY
procedures
for your specific pump.
Complete disassembly procedures for the pump
motor
are not
included in this manual. Instructions
are provided only for replacement of pump end
components, the pump power cable and capaci-
tor. If the pump fails to run and motor problems are
suspected, contact your Gorman-Rupp distributor
or the factory for motor service.
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 avail-
able as a kit shown on the parts lists.
PUMP END DISASSEMBLY
(Figures 1 And 2)
Strainer Removal
To remove the strainer screen (39), lay the pump
on its side, disengage the machine screws (33)
and remove the strainer. If the impeller is clogged,
the debris can usually be removed without further
disassembly.
Impeller Removal
Remove the machine screws (4) and separate the
suction cover (1) and suction cover O-ring (5G).
Immobilize the shaft by inserting a large flat-blade
screwdriver into the slot in the end of the shaft.
Strike the impeller in a counterclockwise direction
with a soft-faced mallet or wood block and ham-
mer. When the impeller breaks loose, remove the
