Gorman-Rupp Pumps 62 1/2D1-CH23 S/G 1211015 and up - Manual (Page 24)

OM--05171 60 SERIES
MAINTENANCE & REPAIR PAGE E -- 7
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.
Most service functions, such as wear plate, impel-
ler, and seal replacement, may be performed by
draining the pump and removing the back cover
assembly. However, the following instructions as-
sume complete disassembly is required.
As described in the SAFETY Section, this manual
will alert personnel to known procedures which re-
quire special attention, to those which could dam-
age equipment, and to those which could be dan-
gerous to personnel. However, this manual cannot
possibly anticipate and provide detailed precau-
tions for every situation that might occur during
maintenance of the unit. Therefore, it is the respon-
sibility of the owner/maintenance personnel to en-
sure that
only safe, established shop procedures
are used, and that any procedures not addressed
in this manual are performed
only after establish-
ing that neither personal safety nor pump integrity
are compromised by such practices.
Before attempting to service the pump, switch off
the engine ignition and remove the spark plug, or
take other precautions to ensure that it will remain
inoperative. Close all valves in the suction and dis-
charge lines.
For engine disassembly and repair, consult the lit-
erature supplied with the engine, or contact your
local Kohler engine representative.
Before attempting to open or service the
pump:
1. Familiarize yourself with this man-
ual.
2. Shut down the engine and remove
the spark plug wires 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.
Discharge Check Valve Disassembly
(Figure 2)
Remove the nuts (17) and separate the check valve
body (13) from the pump casing (1). Pull the rubber
gasket (14) from the flange studs (16), and pull the
check valve arm (15) from the check valve body.
Unscrew the pressure gauge and fire hose adaptor
if required.
Clean the mating surfaces of both flanges and in-
spect all parts for wear or damage. If no further dis-
assembly is required, refer to Discharge Check
Valve Reassembly.
Exhaust Primer Disassembly
(Figure 3)
Remove the hose adaptor (8) from the swivel fitting
(7). If necessary, remove the gas cock valve (10)
and pipe nipple (6).
To remove the exhaust primer body (1) unscrew
the body from the muffler (4). To disassemble the
exhaust primer, remove the handle (11) and un-
screw the various primer components.
If no further disassembly is required, refer to Ex-
haust Primer Reassembly.
Pump Disassembly
(Figure 2)
After disconnecting the exhaust primer, remove
the casing drain plug (11) and drain the pump cas-
ing. Clean and reinstall the plug.
For access to the impeller (2) and seal assembly
(3), remove the nuts (5) securing the pump casing
to the intermediate (6). Remove the casing gasket
(10) and clean the contacting surfaces.