Chevrolet Silverado / GMC Sierra. Service manual — part 77

Fig. 240: Aligning Balance Shaft Drive Gear & Balance Shaft Driven Gear Timing
Marks
Courtesy of GENERAL MOTORS CORP.

13. Position the balance shaft drive gear onto the engine camshaft.

14. Look to ensure that the balance shaft drive gear and the balance shaft driven gear timing

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado

marks are aligned.

15. Install the timing chain and the camshaft sprocket. Refer to Camshaft Timing Chain,

Sprocket, and Tensioner Replacement.

16. Install the valve lifter pushrod guide. Refer to Valve Lifter Replacement.

17. Install the A/C condenser. Refer to Condenser Replacement .

18. Install the radiator. Refer to Radiator Replacement (4.3, 4.8, 5.3, and 6.0L) .

BALANCE SHAFT BEARING AND/OR BUSHING REPLACEMENT

Tools Required

J 26941 Bushing and Bearing Remover

J 38834 Balance Shaft Service Kit. See Special Tools.

Removal Procedure

IMPORTANT: The balance shaft and the front bearing are serviced only as a

package. Do not remove the bearing from the balance shaft.

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado

Fig. 241: Removing Balance Shaft Rear Bearing
Courtesy of GENERAL MOTORS CORP.

1. Remove the balance shaft. Refer to Balance Shaft Replacement.

2. Using J 26941 and the J 38834 , remove the balance shaft rear bearing. See Special Tools.

1. Install the J 26941 legs behind the balance shaft rear bearing and secure.

2. Install the J 38834-1 with the short threaded end through the balance shaft bore in the

front of the engine block.

3. Install J 38834-1 into the J 26941 .

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.

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado

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.

3. Discard the balance shaft rear bearing.

Installation Procedure

Fig. 242: Installing Balance Shaft Rear Bearing
Courtesy of GENERAL MOTORS CORP.

1. Using J 38834 , 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

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado