Connecting Rod: Testing and Inspection

NOTE:
- When reinstalling, make sure that cylinder numbers put on the connecting rod and cap at disassembly match.
- When a new connecting rod is installed, make sure that the notches for holding the bearing in place are on the same side.

1. Replace the connecting rod if it is damaged on the thrust faces at either end.
2. If step wear or a severely rough surface of the inside diameter of the small end is apparent, the rod must be replaced.
3. Using a suitable connecting rod aligning tool, check the rod for bend and twist, noting the following:
a. If the measured value is close to the repair limit, correct the rod by a press.
b. Any connecting rod that has been severely bent or distorted should be replaced.
Standard Values:
Allowable bend of connecting rod:
0.05 mm/100 mm (0.0020 inch/3.94 inch) or less.
Allowable twist of connecting rod:
0.1 mm/100 mm (0.0039 inch/3.94 inch) or less.