Using a ¾" box/open end wrench, towards the upper end of the three (Item 10) tie rods, screw three upper (Item 12) tie rod nuts all the way down until they bottom out on the tie rods. Using the (Item 12) tie rod nut flats, unthread three (Item 10) tie rods from (Item 11) upper body. Pull (Item 11) upper body from the remaining pump assembly. Remove two (Item 17) downtubes and four (Item 16) seals. Remove the three (Item 10) tie rods from (Item 18) lower body and set aside.

NOTE: Lightly tap the end of the ¾" box/open end wrench with a soft mallet to help loosen (Item 12) tie rod nuts.