Piston, Pin, and Connecting Rod Replacement
Piston, Pin, and Connecting Rod ReplacementSpecial Tools Required
^ Piston base 07973-6570500
^ Piston base spring 07973-6570600
^ Piston pin base insert 07973-6890400
^ Piston base head 07PAF-0010400
^ Pilot collar 07973-6890300
^ Adjustable piston pin driver shaft 07973-6890200
^ Adjustable piston pin driver head 07973-6570201
^ Piston base head insert (2) 07PAF-0010500
Disassembly
1. Assemble the special tool as shown.
2. Temporarily install the pilot collar over the piston pin base insert (A), and adjust the piston base head inserts as shown, then tighten the screws (B). Remove the pilot collar.
3. Assemble and adjust the length of the piston pin driver head and shaft to 57 mm (2.2 in.).
4. With the arrow on top of the piston pointing up, place the piston assembly (A) on the special tool (B). Be sure you position the recessed flat area of the piston against the piston base head inserts (C) as shown.
5. Press the pin (D) out with the pin driver (E), the pilot collar (F), and a hydraulic press.
Inspection
1. Measure the diameter of the piston pin.
NOTE: Inspect the piston, piston pin, and connecting rod when they are at room temperature.
2. Zero the dial indicator to the piston pin diameter.
3. Check the difference between the piston pin diameter and the piston pin hole diameter on the piston.
4. Check the difference between the piston pin diameter and the connecting rod small end diameter.
Reassembly
1. Assemble the piston with the arrow (A) pointing up and the connecting rod with the embossed marks (B) on the same side.
2. Insert the pilot collar (A) into the piston and the connecting rod.
3. With the arrow on top of the piston and the embossed mark on the connecting rod facing up, place the piston assembly (B) on the special tool (C). Be sure you position the recessed flat area of the piston against the piston base head inserts (D) as shown.
4. Press the pin (E) in with the pin driver (F) and a hydraulic press.