Chevrolet Silverado / GMC Sierra. Service manual — part 140

Fig. 470: View Of Connecting Rod
Courtesy of GENERAL MOTORS CORP.

12. Inspect the connecting rod for an out-of-round bearing bore. Refer to Engine Mechanical

Specifications.

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado

Fig. 471: Identifying Twisted Connecting Rod
Courtesy of GENERAL MOTORS CORP.

13. Inspect the connecting rod for twisting.

14. Inspect the connecting rod for damage to the bearing cap and bolt threads.

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado

Fig. 472: Measuring Piston Ring End Gap
Courtesy of GENERAL MOTORS CORP.

15. Measure the piston compression ring end gap.

IMPORTANT: Fit each compression ring to the cylinder in which it will

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado

1. Place the compression ring into the cylinder bore.

2. Push the compression ring into the cylinder bore to approximately 6.5 mm (0.25 in)

above the ring travel.

The ring must be square to the cylinder wall.

3. Use a feeler gage in order to measure the end gap.

4. Select another size ring set if the end gap exceeds specifications. Refer to Engine

Mechanical Specifications .

PISTON AND CONNECTING ROD ASSEMBLE

Tools Required

J 24086-C Piston Pin Remover/Installer. See Special Tools.

Assemble

be used.

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado