Chevrolet Silverado / GMC Sierra. Service manual — part 54

Fig. 154: Installing J 5892-D Under Washer On Rocker Arm Bolt
Courtesy of GENERAL MOTORS CORP.

8. Use the J 5892-D in order to compress the valve spring. See Special Tools.

Hook the slotted end of J 5892-D under the washer on the valve rocker arm bolt. See
Special Tools.

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado

9. Apply steady pressure on the valve spring cap until the valve keys are accessible.

Fig. 155: Compressing Valve Spring (Cylinder Head Installed) Using Special Tools
Courtesy of GENERAL MOTORS CORP.

10. Use the J 38606 if the clearance does not permit use of the J 5892-D . See Special Tools.

11. Install the valve stem O-ring seal.

12. Install the valve stem keys.

NOTE:

Completely engage the J 38606 jaws on the valve spring. The J
38606 may slip off and scratch the valve spring. Replace the
valve spring if the valve spring becomes scratch.

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado

Use grease in order to hold the valve stem keys in place.

13. Carefully release the valve spring pressure, making sure the valve stem keys stay in place.

14. Remove the J 5892-D or the J 38606 . See Special Tools.

1. Look to ensure that the valve stem keys seat properly in the upper groove of the valve

stem.

2. Tap the end of the valve stem with a plastic faced hammer in order to seat the valve

stem keys, if necessary.

NOTE:

The valve stem keys must correctly seat in the valve spring
cap. Engine damage may occur by not installing properly.

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado

Fig. 156: Installing J 22794 Into Spark Plug Hole
Courtesy of GENERAL MOTORS CORP.

15. Remove the J 22794 . See Special Tools.

16. Install the spark plugs. Refer to Spark Plug Replacement .

17. Install the valve rocker arms. Refer to Valve Rocker Arm and Push Rod Replacement.

VALVE LIFTER REPLACEMENT

Tools Required

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado