Thursday, May 15, 2014
How to Pull Rocker Studs
The rocker arm gets its name from the action of the part. The rocker arm is attached to a stud that is pressed into the head, and rocks between the push rod and the valves. When the push rod pushes one end of the rocker arm, the other end of the rocker arm opens the valve. Occasionally, rocker studs wear or become damaged, and need replacement. Normally, replacing rocker studs is really a job for a machine shop, but aggressive do-it-yourselfers can save some money by pulling the rocker studs themselves.
Instructions
- 1
Remove the valve cover. Remove the rocker arm nut from the stud by turning it counterclockwise with a wrench. Lift the rocker arm off the rocker stud.
2Slide a stack of flat washers onto the rocker stud. Leave enough space at the top of the stud to fully engage the threads of the nut.
3Thread the nut back onto the shaft. Tighten the nut by turning it clockwise with the wrench. As the nut threads move down the rocker stud, the rocker stud will gradually pull out of the cylinder head.
Sunday, November 10, 2013
How to Remove Studs With Drill Bits
Studs stuck in place by rust and paint often refuse to move with hand tools. Any movement is often the stud breaking off below a nut threaded onto the stud. Removing a stud from its housing with drill bits serves two purposes. The first is to heat the stud while drilling, which breaks the bond between the stud and the threaded part. The second is that if the stud wont break free with the heat from the drill bit, the bit will remove the material from the stud until nothing remains in the hole. Using the correct drill bits will often reverse the stud from the part without extraction tools.
Instructions
- 1
Align the tip of a center punch with the center of the stud. Strike the punch with a hammer. Move the center punch. Repeat the procedure until you have a depression on the center of the stud.
2Secure the smallest drill bit from a left-handed drill-bit set into a drill motor. Coat the drill bit with cutting fluid.
3Set the tip of the drill bit on the center-punch depression. Pump the trigger of the drill to drill a hole through the center of the stud.
4Increase the size of the drill bit in the drill motor. Coat the drill bit with cutting fluid. Pour cutting fluid down the drilled hole in the stud. Drill through the stud with the larger drill bit, using the previous hole as a guide.
5Swap drill bits until the stud works free of the threaded hole or you can see the threads of the hole sticking through the remaining metal of the stud.
