S10/T10 P/U 4WD V6-173 2.8L (1986)
Rocker Arm Assembly: Service and Repair
Rocker Arm Studs Replace
Rocker arm studs that are cracked or have damaged threads can be replaced. If threads in cylinder head are damaged or stripped, the head can be
retapped and a helical type insert added. If such an insert is not available, the head should be replaced.