REPLACE RAMP HYDRAULIC CYLINDER ANCHOR (M1064A3 ONLY) Continued
Remove cylinder (3) from anchor (4).
Remove anchor (4) and all weld material from hull bottom plate. Discard anchor.
Grind weld area level and smooth.
Locate center of first hole as shown.
Drill all holes straight and at right angles to hull bottom plate.
Drill first hole with 7/16 inch (11 mm) diameter drill. Bottom plate is 1-1/8 inches (3 cm) thick. Do not break through.
Tap first hole with a 1/2-13UNC tap to a minimum thread depth of 7/8 inch (22 mm).