a. Check condition of flapper valve assembly (5). Replace if damaged or worn.
b. Clean any accumulated material out of suction flange (4) or pump housing (8) to ensure that the flapper valve is
free to move in the housing (8) and that it seals the suction flange properly.
If dust cap(1) or attaching cable is damaged, repair or replace (para. 4-11).
Replace gasket (2) if necessary.
Repair plug leaks by using antiseize tape on threads.
Do not overtighten screws. Overtightening may crack the suction flange.
a. Place flapper valve assembly (5) on housing (8), Place suction flange (4) on flapper valve (5) and secure with four
b. Install gasket (2) on dust cap (1) and position dust cap (1) on suction flange (4).
C. Wrap plugs (6 and 7) with antiseize tape and install the plugs, if removed.
d. Wrap threads of connectors with anti-seize tape and install elbow(12) and fitting (11) to pump housing (8).
e. Install tube assembly (10) on housing (8) (two places).
f. Tighten nuts (9) to secure tube assembly (10).
4-102 Change 2