Gorman-Rupp Pumps 81 1/2B52-B 1240557 and up - Manual (Page 23)

OM−01525 80 SERIES
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 E−1) and the ac-
companying parts list.
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, disconnect
or lock out the power source to ensure that the
pump will remain inoperative. Close all valves in the
suction and discharge lines.
For power source disassembly and repair, consult
the literature supplied with the power source, or
contact your local power source representative.
Before attempting to open or service the
pump:
1. Familiarize yourself with this man-
ual.
2. Disconnect or lock out the power
source 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 has been approved for use
with volatile and/or flammable liquids,
be certain proper safety practices are
followed before operating or servicing
the pump. Provide adequate ventilation,
prohibit smoking, wear static-resistant
clothing and shoes. Clean up all fuel
spills immediately after occurrence.
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 Removal and Disassembly
Before attempting to service the pump, remove the
pump casing drain plug (22) and drain the pump.
Clean and reinstall the drain plug.
To service the suction check valve assembly (26),
remove the suction piping. Remove the nuts (33)
securing the suction flange (25) and check valve
assembly to the pump casing (1).
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.