Cruze

Piston, Connecting Rod, and Bearing Replacement

Special Tools

EN-470-B Angular Torque Wrench

For equivalent regional tools, refer to Special Tools .

1. Open the bonnet.
2. Remove the cylinder head. Refer to Cylinder Head Replacement : 1.4L LUH and LUJ .
3. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
4. Remove the sump. Refer to Sump Replacement : 1.4L LUH and LUJ .




Note: Mark the installation position of the connecting rod bearing caps. The connecting rod bearings and bearing caps must not be interchanged with other connecting rods.

5. Remove and DISCARD the 4 connecting rod bearing cap bolts (1) of cylinder 2 and 3.
6. Remove the 2 connecting rod bearing caps (2) and the 2 connecting rod bearings of cylinder 2 and 3.
7. Rotate the crankshaft 180°.



8. Remove and DISCARD the 4 connecting rod bearing cap bolts (1) of cylinder 1 and 4.
9. Remove the 2 connecting rod bearing caps (2) and the 2 connecting rod bearings of cylinder 1 and 4.



10. Remove the 4 pistons (1) and connecting rods (2) and the 4 upper connecting rod bearings (3) from the cylinder block.

1. For cleaning and inspection procedure, refer to Piston, Connecting Rod, and Bearing Cleaning and Inspection : 1.4L LUH and LUJ .
2. Assemble the NEW piston and connecting rod. Refer to Piston and Connecting Rod Assemble : 1.4L LUH and LUJ .



3. Adjust the piston ring joints as follows:

3.1.	Upper compression ring (1)

3.2.	Lower compression ring (4)

3.3.	Oil ring (2) or (3)

3.4.	Oil ring spacer (5)




4. The arrow (1) on the piston head must point to the timing side.
5. The markings on the connecting rods (2) must point to the transmission side.



6. Lubricate the piston rings, piston, inner cylinder bore surface and a piston ring compressor with clean engine oil.
7. Install the piston ring compressor in order to compress the piston rings.
8. Install the pistons (1) in compound with connecting rods (2) and upper connecting rod bearings (3) to the engine block and to the crankshaft.




Note: The flarings (arrows) on the connecting rod bearing caps must point to the transmission side. The connecting rod bearing caps must be installed in their original position.

9. Install the 2 connecting rod bearings and the 2 connecting rod bearing caps (2) of cylinder 1 and 4.

Caution: Refer to Fastener Caution in the Preface section.

Caution: Refer to Torque-to-Yield Fastener Caution in the Preface section.

10. Install the 4 NEW connecting rod bearing cap bolts (1) and tighten in the following sequence:

10.1.

Tighten the connecting rod bearing cap bolts to 25 N·m (18 lb ft).

10.2.

Tighten the big end bearing cap bolts an additional 25°. Use EN-470-B spanner.

11. Rotate the crankshaft 180°.




Note: The flarings (arrows) on the connecting rod bearing caps must point to the transmission side. The connecting rod bearing caps must be installed in their original position.

12. Install the 2 connecting rod bearings and the 2 connecting rod bearing caps (2) of cylinder 3 and 2.

Caution: Refer to Fastener Caution in the Preface section.

13. Install the 4 NEW connecting rod bearing cap bolts (1) and tighten in the following sequence:

13.1.

Tighten the connecting rod bearing cap bolts to 25 N·m (18 lb ft).

13.2.

Tighten the connecting rod bearing cap bolts an additional 45°. Use EN-470-B spanner .

14. Install the oil sump Refer to Sump Replacement : 1.4L LUH and LUJ .
15. Lower the vehicle.
16. Install the cylinder head. Refer to Cylinder Head Replacement : 1.4L LUH and LUJ .
17. Close the bonnet.