Chevrolet Silverado / GMC Sierra. Manual - part 75
Fig. 233: Balance Shaft
Courtesy of GENERAL MOTORS CORP.
1. Apply clean engine oil to the balance shaft front bearing.
2. Using J 36996 and J 8092 , install the balance shaft. See Special Tools.
2008 Chevrolet Silverado 1500
2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado
Fig. 234: View of Balance Shaft Retainer & Bolts
Courtesy of GENERAL MOTORS CORP.
3. Install the balance shaft retainer and bolts.
Tighten: Tighten the bolts to 12 N.m (106 lb in).
NOTE:
Refer to Fastener Notice .
2008 Chevrolet Silverado 1500
2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado
Fig. 235: Locating Balance Shaft Driven Gear
Courtesy of GENERAL MOTORS CORP.
4. Install the balance shaft driven gear.
5. If reusing the fastener, apply threadlocker to the threads of the balance shaft driven gear
bolt. Refer to Sealers, Adhesives, and Lubricants for the correct part number.
6. Install the balance shaft driven gear bolt.
1. Use a wrench to secure the balance shaft.
Place the wrench onto the balance shaft near to the balance shaft front bearing.
2008 Chevrolet Silverado 1500
2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado
2. Install the balance shaft driven gear bolt.
Tighten:
1. Tighten the bolt a first pass to 20 N.m (15 lb ft).
2. Tighten the bolt a final pass an additional 35 degrees using J 45059 . See Special
Tools.
7. Remove the wrench from the balance shaft.
8. Rotate the balance shaft by hand in order to ensure that there is clearance between the
balance shaft and the valve lifter pushrod guide. If the balance shaft does not rotate freely,
check to ensure that the retaining ring on the balance shaft front bearing is seated on the
case.
2008 Chevrolet Silverado 1500
2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado