Chevrolet Silverado / GMC Sierra. Service manual — part 138

1. Remove the piston rings from the pistons.

Fig. 463: Pressing Piston Pin From Connecting Rod Using J 24086-C
Courtesy of GENERAL MOTORS CORP.

2. Press the piston pin from the connecting rod using the J 24086-C . See Special Tools.

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado

The piston pin has an interference fit into the connecting rod, and is full floating in the
piston.

Fig. 464: Piston & Connecting Rod Components
Courtesy of GENERAL MOTORS CORP.

3. Mark, separate, and organize the parts for assembly.

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado

PISTON, CONNECTING ROD, AND BEARING CLEANING AND INSPECTION

Fig. 465: Piston & Connecting Rod Components
Courtesy of GENERAL MOTORS CORP.

IMPORTANT: Measurement of all components should be taken with the

components at room temperature.

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado

1. Clean the piston and connecting rod in solvent.

2. Dry the components with compressed air.

Do not use a wire brush in order to clean any part of the
piston.

CAUTION: Refer to SAFETY GLASSES CAUTION .

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado