Connecting Rod, Engine

Connecting Rod Big End Thrust Clearance

Standard value 0.10 - 0.25 mm (0.004 - 0.010 inch)
Limit 0.4 mm (0.016 inch)

Connecting Rod Bolts





Check in the following procedure before reusing the connecting rod bolt.
Measure the outside diameter "A."
Measure the smallest outside diameter "B" within the range "X" shown in the illustration.
If the difference of outside diameter of thread exceeds the limit, replace the connecting rod bolt.

Limit: 0.1 mm

Tightening Sequence
Tighten bolts alternately
Install each bolt and tighten by fingers
Tighten the bolt to 5.0 Nm (44 in-lb) in several steps
Tighten the bolt to 20 Nm (15 ft-lb) in several steps





Put a paint mark on the bolt head as illustrated.

Put a paint mark on the connecting rod at 90° position in the tightening direction of the bolt with reference to the paint mark position of the bolt.

CAUTION
When the tightening angle is smaller than the specified tightening angle, the appropriate tightening capacity cannot be secured.
When the tightening angle is larger than the specified tightening angle, remove the bolt to start from the beginning again according to the procedure.

Tighten the bolt 90°
Make sure that the paint mark of the connecting rod is aligned with that of the bolt.