Gorman-Rupp Pumps PAV3B60C-3TNV70 1433753 and up - Manual (Page 30)

PA SERIES OM-06260
MAINTENANCE & REPAIR PAGE E - 12
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 5) and the
corresponding Parts Lists. Maintenance and repair
instructions for the engine and air compressor are
covered separately in specific literature available
from the manufacturers.
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 engine. However, 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 casing drain plug (3, Figure 1).
Clean and reinstall the drain plug.
Before attempting to open or service the
pump:
1. Familiarize yourself with this man­
ual.
2. Shut down the engine and discon­
nect the positive battery cable 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.
The pump may be equipped with an au­
tomatic starting system, and therefore
subject to automatic restart. Keep
hands and clothing away from the unit to
prevent injury during automatic opera­
tion. Disconnect the positive battery
cable before performing any mainte­
nance. Failure to do so may result in se­
rious personal injury.
Death or serious personal injury and
damage to the pump or components