Gorman-Rupp Pumps 11 1/2A52-E2 3P 1235018 and up - Manual (Page 24)

10 SERIES OM-04829
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, 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 lit­
erature supplied with the motor, or contact your lo­
cal 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.
Suction Check Valve Removal and Disassembly
Before attempting to service the pump, remove the
pump casing drain plug (25) and drain the pump.
Clean and reinstall the drain plug.
To service the suction check valve assembly (33),
remove the suction piping. Remove the nuts (40)
securing the suction flange (4) to the pump casing
(1). Pull the check valve assembly from the suction
port.
Inspect the check valve parts for wear or damage.
If replacement is required, remove the hardware
(36 and 37), and separate the check valve gasket
(34) and weights (35 and 38).
If no further disassembly is required, see Suction
Check Valve Installation.
Back Cover Removal
The wear plate (24) is easily accessible and may be
serviced by removing the back cover plate (27).
Loosen the clamp bar screw (29) and remove the
clamp bar (30). Pull the back cover and wear plate
from the pump casing. Remove the back cover
gasket (26). Clean the mating surfaces of the back
cover plate and pump casing.
Inspect the wear plate (24) and replace it if badly
scored or worn. To remove the wear plate, disen­
gage the hardware (31 and 32) securing it to the
back cover.
If no further disassembly is required, see Back
Cover Installation.