Gorman-Rupp Pumps 13D1-L70EE S/G 1264232 and up - Manual (Page 23)

10 SERIES OM-05461
MAINTENANCE & REPAIR PAGE E - 6
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 views (see Figures 1 and 2) and the
accompanying parts lists.
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, shut down
the engine and take precautions to ensure that it
will remain inoperative. Close all valves in the suc­
tion and discharge lines.
For engine disassembly and repair, consult the lit­
erature supplied with the engine, or contact your
local Yanmar engine representative.
Before attempting to open or service the
pump:
1. Familiarize yourself with this man­
ual.
2. Shut down the engine and take
precautions 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.
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.
Suction Check Valve Disassembly
(Figure 2)
Before attempting to service the pump, remove the
pump casing drain plug (21) and drain the pump.
Clean and reinstall the drain plug.
To service the suction check valve, remove the suc­
tion piping. Remove the nuts (34) securing the suc­
tion flange (32) to the pump casing (1). Pull the
check valve assembly (35) from the suction port.
Inspect the check valve components for excessive
wear. If replacement of individual parts is required,
use a grinder to remove the head from the rivet (36)
and separate the check valve components.
If no further disassembly is required, see Suction
Check Valve Installation.
Back Cover Removal
(Figure 2)
The wear plate assembly (20) can be serviced after
the back cover assembly (27) has been removed.
Remove the wing nuts and flat washers (25 and 26)
securing the back cover to the casing. Pull the
back cover and assembled wear plate from the
pump casing. Remove the cover plate gasket (31)
and clean the mating surfaces.