GENERAL MAINTENANCE - Continued
Removal of Studs Broken at Surface
TOOLS: Screw threading set
Portable electric drill
Twist drill set
Screw extractor set
Ball peen hammer
lub thread area (A).
2. Using hammer, lightly tap stud (B).
It is very important to drill out broken
stud on exact center line.
Using punch and hammer, punch center of
broken stud (B).
Safety glasses must be worn when using
drill to prevent injury to eyes.
Using electric drill with pilot twist drill,
drill center of stud (B).
Using electric drill with twist drill slightly
smaller than extractor, drill into stud (B).