4-17. REPLACE/INSPECT/REPAIR INLET (SUCTION) FLANGE AND CHECK VALVE ASSEMBLY.
This task covers:
Tool Kit, General Mechanics
a. Remove suction pipe nipple (1) and female coupling half (2).
b. Remove three hex nuts (3) and separate in flange (4) from pump casing (5).
Remove inlet flange (4) and check valve assembly (6).
a. Carefully inspect gasket and check valve. Replace if either is damaged. If not, thoroughly
clean and wipe dry with lint-free cloth.
b. Inspect studs (7). If damaged, remove and replace.
Hinged area of gasket faces top stud. Large weight should face
Install suction flange with tapered, protruding edge facing the bottom.
a. Align check valve assembly (6) on three studs (7) of pump casing (5).
b. Position inlet flange (4) on studs (7).
Push inlet flange (4) and check valve assembly (6) against pump casing (5). Secure with three
hex nuts (3).
d. Install suction pipe nipple (1) and coupling half (2).