Chevrolet Silverado / GMC Sierra. Service manual — part 357

Fig. 438: Locating Mark On Top Of Piston & Connecting Rod Tab
Courtesy of GENERAL MOTORS CORP.

2. Assemble the piston and connecting rod. The mark (1) on the top of the piston and the tab

(2) on the side of the connecting rod should be facing the same direction.

2008 Hummer H2

2008 ENGINE Engine Mechanical - 6.2L - H2

Fig. 439: Piston Pin, Piston & Connecting Rod
Courtesy of GENERAL MOTORS CORP.

3. Install the piston pin to the piston and connecting rod.

4. Install the retainers. The retainers should be seated in the groove of the pin bore.

2008 Hummer H2

2008 ENGINE Engine Mechanical - 6.2L - H2

Fig. 440: View Of Piston Rings
Courtesy of GENERAL MOTORS CORP.

5. Using piston ring pliers, install the piston rings onto the piston. The dimple or mark on the

piston ring should face the top of the piston. If no dimple or mark can be found on the top

IMPORTANT: When installing piston rings, use a ring expander plier type

tool. Do not roll the rings into the grooves of the piston. Use
caution and care to expand the rings only slightly larger than
the outside diameter (OD) of the piston.

2008 Hummer H2

2008 ENGINE Engine Mechanical - 6.2L - H2

compression ring, it may be installed in either direction.

6. Position the oil control ring end gaps a minimum of 25 mm (1.0 in) from each other.

7. Position the compression ring end gaps 180 degrees opposite each other.

Fig. 441: View Of Piston, Connecting Rod & Bearing Assembly
Courtesy of GENERAL MOTORS CORP.

2008 Hummer H2

2008 ENGINE Engine Mechanical - 6.2L - H2