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4. Slide the J 38834-2 onto the J 38834-1 and into the balance shaft bore of the engine block. 5. Install the J 38834 bearing, washer, and nut onto the J 38834-1. See Special Tools. 6. Using a wrench secure the J 38834-1 and then rotate the J 38834 nut clockwise until the balance shaft rear bearing is removed from the engine block. See Special Tools. 7. Remove the J 26941 from the balance shaft rear bearing. See Special Tools. 2. Discard the balance shaft rear bearing. BALANCE SHAFT CLEANING AND INSPECTION Fig. 529: Balance Shaft Cleaning & Inspection Areas
2008 Chevrolet Silverado 1500 2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado
1. Clean the following components in cleaning solvent: The balance shaft (1) The balance shaft retainer (2) The balance shaft rear bearing The balance shaft driven gear (4) The balance shaft drive gear 2. Dry the following components with compressed air: The balance shaft (1) The balance shaft retainer (2) The balance shaft rear bearing The balance shaft driven gear (4) The balance shaft drive gear 3. Inspect the balance shaft bearings for the following: Front ball bearing for damage or wear Front ball bearing for smoothness of operation Rear sleeve bearing for wear, scoring, or other damage 4. Inspect the balance shaft (1) for the following: Wear or scoring on the rear bearing journal Damaged bolt hole threads Damage to the balance shaft driven gear locator pin 5. Inspect the balance shaft retainer (2) for wear or damage. 6. Inspect the balance shaft retainer bolts (3) for damaged threads. 7. Inspect the driven gear (4) for the following: Excessive wear or damage Nicks, burrs, or scoring 8. Inspect the driven gear bolt (5) for damaged threads. CAUTION: Refer to SAFETY GLASSES CAUTION . IMPORTANT: The balance shaft and the balance shaft front bearing are serviced only as an assembly. Do not remove the balance
2008 Chevrolet Silverado 1500 2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado
Fig. 530: Balance Shaft Drive Gear Camshaft Timing Mark 9. Inspect the balance shaft drive gear for the following: Excessive wear or damage Nicks, burrs, or scoring BALANCE SHAFT BEARING AND/OR BUSHING INSTALLATION Tools Required
2008 Chevrolet Silverado 1500 2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado
J 38834 Balance Shaft Service Kit. See Special Tools. Installation Fig. 531: Installing Balance Shaft Rear Bearing 1. Use the J 38834 in order to install the balance shaft rear bearing. See Special Tools. 1. Install the J 38834-3 onto the short threaded end of the J 38834-1. 2. Install the J 38834 nut, the washer, and the bearing on the long threaded end of the J 38834-1. See Special Tools. CAUTION: Refer to SAFETY GLASSES CAUTION .
2008 Chevrolet Silverado 1500 2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado
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