Gorman-Rupp Pumps 82E1-L100EE-X 1215875 thru 1518663 - Manual (Page 24)

OM−05132 80 SERIES
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.
As described on the following pages, 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 maintenance pro-
cedures are used, and that any procedures not ad-
dressed in this manual are performed only after es-
tablishing that neither personal safety nor pump in-
tegrity are compromised by such practices.
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.
If this pump is used with volatile and/or
flammable liquids, be certain proper
safety practices are followed before op-
erating or servicing the pump. Provide
adequate ventilation, prohibit smoking,
wear static-resistant clothing and
shoes. Clean up all fuel spills immedi-
ately after occurrence.
Suction Check Valve Disassembly
(Figure 2)
Before attempting to service the pump, remove the
pump casing drain plug (20) and drain the pump.
Clean and reinstall the drain plug.
To service the suction check valve (26), remove the
suction piping. Remove the nuts (24) securing the
suction flange (25) 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
(27 and 28) and separate the check valve gasket
(30) and weights (29 and 31).
If no further disassembly is required, see Suction
Check Valve Installation.
Pump Casing Removal
(Figure 1)
To service the impeller or seal assembly, discon-
nect the discharge piping. See Figure 1 and re-
move the hardware (23, 24, 25 and 26) securing
the pump casing to the base (13).