Tools Required

Caution: Wear safety glasses in order to avoid eye damage.

Important: Valve rocker arm ball studs that have damaged threads or are loose in cylinder heads should be replaced. New valve rocker arm ball studs are available in 0.0762 mm (0.003 in) and 0.3302 mm (0.013 in) oversize.

1. Ream the hole to the proper size for the replacement oversize valve rocker arm ball stud.

Use J 5715 for 0.0762 mm (0.003 in) oversize valve rocker arm ball studs, or J 6036 for 0.3302 mm (0.013 in) oversize valve rocker arm ball studs.

2. Apply lubricant GM P/N 1052271 or equivalent the lower end (press-fit end) of the valve rocker arm ball stud.



3. Use the J 6880 and a hammer to install the valve rocker arm ball stud into place.

The valve rocker arm ball stud is installed to proper depth when the J 6880 bottoms onto the cylinder head.