Gorman-Rupp Pumps 2D-E.50 3P 1467825 and up - Manual (Page 22)

D SERIES OM−01477
MAINTENANCE & REPAIR PAGE E − 6
PUMP 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 views (see Figures 1 and 2) and the
accompanying parts lists.
NOTE
The gear reducer used on this pump is a model
F842B−28K−B5, manufactured by Boston Gear. A
complete gear reducer can be ordered from Gor-
man-Rupp using the part number shown in the
parts list on Page E−3. Gorman-Rupp does not,
however, stock or furnish any component parts for
the gear reducer. Replacement parts may be ob-
tained by contacting Boston Gear at
www.bostongear.com.
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.
Most service functions may be performed without
separating the pump and gearbox from the motor.
If major repair is required, the pump, gearbox and
motor must be disconnected.
Before attempting to service the pump, lock out
and tag out incoming power to the motor to ensure
that it 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. Lock out and tag out incoming
power to the motor to ensure that
the pump will remain inoperative.
3. Allow the pump to completely cool
if overheated.
4. Drain the pump.
Suction and Discharge Check Valve Removal
(Figure 1)
To service the suction and discharge check valves,
remove the suction and discharge piping.
To service the suction check valve assembly (25),
remove the hardware (18) securing the suction
flange (26) and check valve assembly to the dia-
phragm pot (22). Pull the check valve assembly
from the suction port.
To service the discharge check valve assembly
(20), remove the hardware (17,18 and 21) secur-
ing the discharge flange (19) and check valve as-
sembly to the diaphragm pot. Pull the check valve
assembly from the suction port.
Individual parts for the suction and discharge
check valve assemblies are not available. Replace
the complete assemblies if they are excessively
worn or damaged.
If no further disassembly is required, see Suction
And Discharge Check Valve Installation.
Diaphragm and Plunger Rod Removal and
Disassembly
(Figure 1)
Before attempting ro remove the diaphragm (11,
Figure 2), rotate the motor shaft until the eccentric