Disassembly / Reassembly Operation
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Disassembly of the pump
Unscrew the 2 nuts (16) and put aside the flange (1), the tie
rods (10) and the protection (4),
Clamp the pump horizontally through the body with a vice
(7),
Unscrew the foot-valve body assembly (23),
Take off the piston (11) downwards,
Put aside the cylinder (21).
Lower valve
Push the ball (19) to remove the spacer (18),
Take off the seat (20), the seal (22) and the pin (24),
Put aside the seal (9),
Clean the parts, check them if they are damaged or worn.
Reinstall the parts in the reverse order of the disassembly
sequence.
Wet cup seals :
Unscrew the wet cup nut (5),
Take off the washers (6 & 13),
Put aside the seals,
Clean the parts, check them if they are damaged or worn.
Reinstall the parts in the reverse order of the disassembly
sequence.
Piston head
Unscrew the seat (17),
Take off the ball (15), the washers (6 & 13) and the seals (14),
Clean the parts, check them if they are damaged or worn.