2-31. FOOT VALVE (CONT).
Repair by cleaning all dirt, rocks, or trash from the foot valve.
Remove corrosion using abrasive cloth and treat with epoxy primer and
polyurethane coating (see TM 43-0139).
Repair by replacing authorized components.
Assemble square neck bolt (1), upper suction valve weight (2), valve
Square neck bolt (1)
diaphragm (3), lower suction valve weight (4), lock washer (5) and secure
Upper suction valve
with hexagon plain nut (6).
Valve diaphragm (3)
Lower suction valve
Lock washer (5)
Hexagon plain nut (6)
Position assembled unit into the valve housing (7).
Valve housing (7)
Position seat and bottom strainer (8) in bottom of valve housing (7) and
Seat and bottom strainer (8)
insert three hexagon cap screws (9) from the bottom.
Hexagon head cap
Screw on three hexagon plain nuts (10) to secure the foot valve
Hexagon plain nuts (10)
Turn foot valve assembly upside down to check that valve flaps open and
close properly. If valve flaps do not operate, the foot valve is improperly