Gorman-Rupp Pumps PAH4C60C-B 1503565 and up - Manual (Page 32)

OM-06479 PAH SERIES
MAINTENANCE & REPAIR PAGE E - 11
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 illustrations (see Figures 1 through 6) and the
corresponding Parts Lists. Maintenance and repair
instructions for the air compressor are covered
separately in specific literature available from the
manufacturer.
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.
Some pump service functions may be performed
without separating the pump end assembly from
the power source. However, the priming chamber
(15, Figure 1) and discharge check valve assembly
(23, Figure 1) must be removed to service most
pump components. The following instructions as­
sume complete disassembly of the pump is re­
quired.
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 and drain the pump cas­
ing by removing the lowermost pipe plug (9, Figure
2). Clean and reinstall the pipe plug.
Before attempting to open or service the
pump:
1. Familiarize yourself with this man­
ual.
2. Shut down the power source and
take precautions to ensure that the
pump will remain inoperative.
3. Allow the pump to completely cool
if overheated.
4. Check the temperature and make
sure it is cool before opening any
covers, plates, gauges, or plugs.
5. Close the suction and discharge
valves.
6. Vent the pump slowly and cau­
tiously.
7. Drain the pump.
This pump is designed to handle materi­
al which could cause illness through di­
rect exposure or emitted fumes. Wear
adequate protective clothing when
working on the pump or piping.
Use only replacement parts provided or
approved by Gorman‐Rupp. Use of non‐
authorized parts may result in damage to
the equipment and/or injury to personnel
and will invalidate the warranty.
Priming Chamber Removal And Disassembly
(Figure 5)
Disconnect both the suction piping and the air dis­
charge tubing from the priming chamber assembly
(1). Support the priming chamber assembly using
a sling and a suitable lifting device. Remove the
hardware (6 and 7) and separate the priming
chamber assembly, gasket (8) and baffle (9) from
the pump assembly.