Piston, Pin, and Connecting Rod Replacement: Disassembly

Assemble the special tool as shown.

Fig 1: Exploded View Of Special Tool
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Temporarily install the pilot collar, O.D. 18 mm over the pilot pin (A), and adjust the piston base head as shown, then tighten the screws (B). Remove the pilot collar.

Fig 2: Identifying Pilot Collar Installing Dimensions
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Assemble and adjust the length of the insert pin and the insert adjust to 45 mm (1.77 in).

Fig 3: Identifying Insert Pin Adjusting Length
Courtesy of AMERICAN HONDA MOTOR CO., INC.
With the arrow on top of the piston pointing up, place the piston assembly (A) on the piston base head (B). Be sure you position the recessed flat area of the piston against the area of the piston base head (C) as shown.

Fig 4: Identifying Piston Assembly On Piston Base Head
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Press the pin (D) out with the insert pin and the insert adjust (E), the pilot collar (F), and a hydraulic press.