Chevrolet Silverado / GMC Sierra. Manual - part 157
Fig. 526: View Of J 33049 Camshaft Bearing Service Kit Components
Courtesy of GENERAL MOTORS CORP.
1. Assemble the J 33049 handle (10), the expanding driver (4-8), the washer (2 or 3), and the
expander assembly (15). See Special Tools.
Fig. 527: Removing/Installation Camshaft Inner Bearing Using J 33049
Courtesy of GENERAL MOTORS CORP.
CAUTION: Refer to SAFETY GLASSES CAUTION .
IMPORTANT: The camshaft bearings vary in size. When ordering the new
camshaft bearings, be sure to order the correct camshaft
bearings for the application to be serviced.
Always install the camshaft outer bearings #1 and #4 first.
The camshaft outer bearings serve as a guide for the J 33049
2008 Chevrolet Silverado 1500
2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado
2. Install the NEW camshaft outer bearings #4 and #1.
1. Install the NEW camshaft outer bearing #4 onto the J 33049 expander assembly. See
Special Tools.
2. Tighten the J 33049 expander assembly nut until snug. See Special Tools.
3. Align the lubrication hole of the camshaft outer bearing #4 above the 3 o'clock
position or the 9 o'clock position of the camshaft outer bearing bore #4 at the rear of
the engine block.
4. Drive the camshaft outer bearing #4 into the camshaft outer bearing bore #4 at the rear
of the engine block.
5. Loosen the J 33049 expander assembly nut. See Special Tools.
6. Remove the camshaft outer bearing #4 from the J 33049 expander assembly. See
Special Tools.
7. Install the NEW camshaft outer bearing #1 onto the J 33049 expander assembly. See
Special Tools.
8. Tighten the J 33049 expander assembly nut until snug. See Special Tools.
9. Align the lubrication hole of the camshaft outer bearing #1 above the 3 o'clock
position or the 9 o'clock position of the camshaft outer bearing bore #1 at the front of
the engine block.
10. Drive the camshaft outer bearing #1 into the camshaft outer bearing bore #1 at the
front of the engine block.
11. Loosen the J 33049 expander assembly nut. See Special Tools.
12. Carefully slide the J 33049 into the engine block until the J 33049 expander assembly
is positioned between the camshaft inner bearing bores. See Special Tools.
3. Install the NEW camshaft inner bearings #3 and #2.
1. Install the NEW camshaft inner bearing #3 onto the J 33049 expander assembly. See
Special Tools.
2. Tighten the J 33049 expander assembly nut until snug. See Special Tools.
3. Align the lubrication hole of the camshaft inner bearing #3 above the 3 o'clock
position or the 9 o'clock position of the camshaft inner bearing bore #3 of the engine
block.
4. Push the J 33049 guide cone into the camshaft front bearing bore #1 in order to align
the J 33049 . See Special Tools.
and help center the camshaft inner bearings during the
installation process. See Special Tools.
2008 Chevrolet Silverado 1500
2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado
5. Drive the camshaft inner bearing #3 into the camshaft inner bearing bore #3.
6. Loosen the J 33049 expander assembly nut. See Special Tools.
7. Carefully slide the J 33049 until the J 33049 expander assembly is positioned between
the camshaft inner bearing bore #2 and the camshaft outer bearing bore #1. See
Special Tools.
8. Install the NEW camshaft inner bearing #2 onto the J 33049 expander assembly. See
Special Tools.
9. Tighten the J 33049 expander assembly nut until snug. See Special Tools.
10. Align the lubrication hole of the camshaft inner bearing #2 above the 3 o'clock
position or the 9 o'clock position of the camshaft inner bearing bore #2 of the engine
block.
11. Push the J 33049 guide cone into the camshaft front bearing bore #1 in order to align
the J 33049 . See Special Tools.
12. Drive the camshaft inner bearing #2 into the camshaft inner bearing bore #2.
13. Loosen the J 33049 expander assembly nut. See Special Tools.
4. Carefully remove the J 33049 from the engine block. See Special Tools.
BALANCE SHAFT BEARING AND/OR BUSHING REMOVAL
Tools Required
J 26941 Bushing/Bearing Remover. See Special Tools.
J 38834 Balance Shaft Service Kit. See Special Tools.
Removal
2008 Chevrolet Silverado 1500
2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado
Fig. 528: Removing Balance Shaft Rear Bearing
Courtesy of GENERAL MOTORS CORP.
1. Use the J 38834 and the J 26941 in order to remove the balance shaft rear bearing. See
Special Tools.
1. Install J 26941 legs behind the balance shaft rear bearing and secure. See Special
Tools.
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 the J 38834-1 into J 26941 . See Special Tools.
CAUTION: Refer to SAFETY GLASSES CAUTION .
2008 Chevrolet Silverado 1500
2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado