Chevrolet Silverado / GMC Sierra. Manual — part 354
Fig. 427: Measuring Piston Pin-To-Bore Clearance
Courtesy of GENERAL MOTORS CORP.
9. To determine the piston pin-to-bore clearance, use an inside micrometer and measure the
piston pin bore inside diameter (ID).
10. Subtract the piston pin OD measurement from the piston pin bore ID measurement to
determine pin-to-bore clearance. Refer to Engine Mechanical Specifications.
Measuring Piston Ring End Gap
2008 Hummer H2
2008 ENGINE Engine Mechanical - 6.2L - H2
Fig. 428: Measuring Piston Ring End Gap
Courtesy of GENERAL MOTORS CORP.
IMPORTANT:
Do not attempt to file the end of the piston ring to
achieve the proper end gap clearance.
2008 Hummer H2
2008 ENGINE Engine Mechanical - 6.2L - H2
1. Place the piston ring into the cylinder bore 6.5 mm (0.25 in) below the top of the ring travel
area. Both rings should be installed with the orientation marks facing the top of the piston.
2. Insert a feeler gage and measure the piston ring end gap. Refer to Engine Mechanical
Specifications.
Connecting Rod and Bearings
Fig. 429: View Of Piston, Pin & Piston Rings
Measure the piston ring in the cylinder in which it will be
used.
2008 Hummer H2
2008 ENGINE Engine Mechanical - 6.2L - H2
Courtesy of GENERAL MOTORS CORP.
1. Clean the connecting rod (105) and cap (103) in solvent.
2. Dry the components with compressed air.
IMPORTANT:
The powdered metal connecting rod and cap are
machined for proper clearances. The connecting rod and
cap must be used as an assembly with no repair or
modifications to either mating surface. Do not attempt to
repair the rod or cap. If service is required, replace the
rod and cap as an assembly.
Do not attempt to repair the bolt hole threads of the
connecting rod.
CAUTION: Refer to Safety Glasses Caution .
2008 Hummer H2
2008 ENGINE Engine Mechanical - 6.2L - H2
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