Gorman-Rupp Pumps 612L20-B 814882 and up - Manual (Page 23)

60 SERIES OM−01395
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 E−1) and the ac-
companying 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, disconnect
or lock out the power source to ensure that the
pump will remain 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. Disconnect or lock out 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.
Suction Head And Wear Ring Removal
Before attempting to service the pump. remove the
casing drain plug (39) and drain the pump. Clean
and re-install the drain plug.
Disconnect the suction and discharge piping. Re-
move the hardware securing the suction head (46)
to the base. Support the suction head using a suit-
able hoist and sling. Disengage the hardware (48)
and separate the suction head and wear ring (44)
from the pump casing. Remove the suction head
gasket (49) and clean the mating surfaces.
Inspect the wear ring for excessive wear or scoring.
The wear ring is a press fit into the suction head. If
replacement is required, use a small bit to drill
three holes horizontally, 180
_ apart, through the
wear ring between each of the spiral pins. Use a
chisel or other suitable tool to complete the cuts
through the wear ring. Use caution not to damage
the suction head bore. Remove the wear ring sec-
tions from the suction head.
If no further disassembly is required, see Suction
Head and Wear Ring Installation.
Pump Casing Removal
Use lifting and moving equipment in
good repair and with adequate capacity
to prevent injuries to personnel or dam-
age to equipment. If slings or chains are
used to move the pump or components,
make sure that the load is balanced;
otherwise serious personal injury or
death could result. Suction and dis-
charge hoses and piping must be re-
moved from the pump before lifting.