80 SERIES
OM−06362
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.
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 shop
procedures are used, and that any procedures not
addressed in this manual are performed
only
after
establishing that neither personal safety nor pump
integrity are compromised by such practices.
Before attempting to service the pump, remove the
spark plug wire to ensure that it will remain inopera-
tive. Close all valves in the suction and discharge
lines.
For engine disassembly and repair, consult the lit-
erature supplied with the engine, or contact your
local engine representative.
The engine used in this pump is not
standard. It has been modified for use in
handling gasoline and other petroleum
products in a well-ventilated, non-flam-
mable atmosphere free of combustible
hazards. It cannot be further modified
without affecting performance and safe-
ty factors. The shield and spark arrest-
ing modifications must be inspected
and maintained regularly while the unit
is in use. Refer to the manual accompa-
nying the engine before attempting to
start the engine.
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.
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.
Suction Check Valve Disassembly
(Figure 2)
Before attempting to service the pump, remove the
pump casing drain plug (19) and drain the pump.
Clean and reinstall the drain plug.
To service the suction check valve, remove the suc-
tion piping. Remove the nuts (7) securing the suc-
tion flange (22) to the pump casing (1). Pull the
check valve assembly (23) from the suction port.
Remove the hardware (not shown) securing the
check valve weights to the check valve.
