80 SERIES
OM-00745
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 1) and the accompa
nying parts list.
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, lock out or
disconnect the power source to ensure that it 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. Lock out or disconnect 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 Disassembly
Before attempting to service the pump, remove the
pump casing drain plug (23) and drain the pump.
Clean and reinstall the drain plug.
To service the suction check valve, remove the suc
tion piping. Remove the nuts (33) securing the suc
tion flange (34) and the check valve assembly (26)
to the pump casing (1). Pull the check valve assem
bly 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 valve gasket (30) and
weights (29 and 31).
If no further disassembly is required, see
Suction
Check Valve Installation
.
