Gorman-Rupp Pumps 02K3-E2 3P 281903 and up - Manual (Page 22)

OM-01165 0 SERIES
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 decals
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, disconnect
the incoming power to the motor and lock it out to
ensure that the pump will remain inoperative.
Close all valves in the suction and discharge lines.
For motor disassembly and repair, consult the liter­
ature supplied with the motor, or contact your local
motor representative.
Before attempting to open or service the
pump:
1. Familiarize yourself with this man­
ual.
2. Disconnect the incoming power to
the motor and lock it out to ensure
that the pump will remain inopera­
tive.
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.
Use lifting and moving equipment in
good repair and with adequate capacity
to prevent injuries to personnel or dam­
age to equipment.
Pump Disassembly
Before attempting to service the pump, remove the
pump casing drain plug (16) and drain the pump.
Clean and reinstall the drain plug.
To service the impeller (2), seal assembly (3), or va­
ne plate (17), the pump housing (1) must be sepa­
rated from the intermediate (10).
Remove the suction and discharge lines. Remove
the nuts (9) and use a suitable hoist and sling to
separate the pump casing and gasket (7) from the
intermediate. Remove the vane plate O‐ring (22).
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.
Impeller Removal
For access to the impeller (2), disengage the
screws (5 and 6) and remove the vane plate (17).
Immobilize the impeller by inserting a bar between
the impeller vanes, being careful not to damage
the vanes. Disengage the impeller nut (19).