Improper assembly will cause equipment failure. Mark head
assembly top and bottom and observe carefully the parts
placement for ease of reassembly.
(2) Remove four screws (3), washers (2), and separate head assembly (1) from pump block (18).
(3) Unscrew valve carrier (7) and remove from head assembly (1).
(4) Remove O-ring (12), valve guide (13), 0-ring (14), ball (15), valve seat (16), and O-ring (17) from
head assembly (1).
(5) Unscrew valve carrier (10) and remove from head assembly (1).
(6) Remove O-ring (9), valve seat (8), ball (7), O-ring (6), valve guide (5), and O-ring (4) from head
(1) Soak internal pump parts in a solution of baking soda and water. Rinse thoroughly and allow to air dry.
(2) Use a soft bristle brush to clean out pump body.
(3) Clean valves and valve carriers.
(4) Clean seats for seal rings, making sure no chemical residue has collected.
(5) Wash plunger and holder with a mild soap solution. Rinse thoroughly. Air dry.
(1) Inspect seal rings for tears and cracks.
(2) Inspect ball valves for damage. Make sure ball moves freely.
(3) Inspect valve carriers for excessive wear or cracks.
(4) Inspect gland sleeve and bushing guides for excessive wear.
(5) Inspect plunger for nicks and scratches.