Pump and seal disassembly and reassembly – Gorman-Rupp Pumps 03H1-B 710816 and up User Manual
Page 23
0 SERIES
OM-01192
MAINTENANCE & REPAIR
PAGE E - 4
PUMP AND SEAL DISASSEMBLY
AND REASSEMBLY
Review all SAFETY information in Section A.
Follow the instructions on all tags, label and de
cals attached to the pump.
This pump requires little service due to its rugged,
minimum‐maintenance design. However, if it be
comes necessary to inspect or replace the wearing
parts, follow these instructions which are keyed to
the sectional view (see Figure 1) and the accompa
nying parts list.
This manual will alert personnel to known proce
dures which require special attention, to those
which could damage equipment, and to those
which could be dangerous to personnel. However,
this manual cannot possibly anticipate and provide
detailed precautions for every situation that might
occur during maintenance of the unit. Therefore, it
is the responsibility of the owner/maintenance per
sonnel to ensure that only safe, established main
tenance procedures are used, and that any proce
dures not addressed in this manual are performed
only after establishing that neither personal safety
nor pump integrity are compromised by such prac
tices.
Before attempting to service the pump, switch off
the power source to ensure that the pump will re
main inoperative. Close all valves in the suction
and discharge lines.
For power source disassembly and repair, consult
the literature supplied with the power source, or
contact your local power source representative.
Before attempting to open or service the
pump:
1. Familiarize yourself with this man
ual.
2. Lock out or disconnect the power
source to ensure that the pump will
remain inoperative.
3. Allow the pump to completely cool
if overheated.
4. Check the temperature before
opening any covers, plates, or
plugs.
5. Close the suction and discharge
valves.
6. Vent the pump slowly and cau
tiously.
7. Drain the pump.
If this pump is used for volatile and/or
flammable liquids, be certain proper
safety practices are followed before op
erating or servicing the pump. Provide
adequate ventilation, prohibit smoking,
wear static‐resistant clothing and
shoes. Clean up all fuel spills immedi
ately after occurrence.
Pump Casing and Wear Ring Removal
Before attempting to service the pump, remove the
casing drain plug (38) and drain the pump. Clean
and reinstall the drain plug.
To service the wear ring (37), impeller (2) or seal as
sembly (3), the pump casing (1) must be sepa
rated from the base and pedestal (16).
Remove the suction and discharge lines. Remove
the nuts (31) and use a suitable hoist and sling to
separate the pump casing and gasket set (5) from
the seal plate and pedestal.
Use lifting and moving equipment in
good repair and with adequate capacity
to prevent injuries to personnel or dam
age to equipment. Suction and dis
charge hoses and piping must be re
moved from the pump before lifting.
Tie and tag any leveling shims used under the cas
ing feet to ease reassembly.
Inspect the wear ring (37) for excessive wear or
scoring. The wear ring is secured in the pump cas
ing by a press fit. If replacement is required, use a