Connecting Rod Twist Inspection

• With the big-end arbor [A] still on V block [C], hold the connecting rod horizontally and measure the amount that the arbor [B] varies from being paralleled with the surface plate over a 100 mm (3.94 in.) length of the arbor to determine the amount of connecting rod twist.

If the connecting rod twist exceeds the service limit, the connecting rod must be replaced.

Connecting Rod Twist Service Limit: TIR 0.2/100 mm (0.008/3.94 in.)