19 of 59 GH-24, GH-30, GH-45, GH-60 Rev.003
OPERATING INSTRUCTIONS
7. EXERT ONLY ENOUGH DOWNWARD PRESSURE TO START THE TAPPING PROCESS. The tap will engage
itself and follow the hole. When tapping a through hole, remember that the tap will protrude on the
bottom side of the workpiece; make sure there is sufficient clearance below the work piece to allow
the tap to break through and not hit the work surface. Use a torque style tap holder when tapping
blind or bottom holes. The built-in safety clutch on this holder will ratchet and stop the tap from
turning when the tap has reached the bottom of the hole.
8. When the hole is completely tapped, release the forward button and actuate the reverse button to
change the rotation of the hydraulic motor and remove the tap from the hole.
DO NOT PUSH OR PULL ON THE MOTOR AS THE TAP IS TAPPING THE HOLE OR
BACKING OUT OF IT! THIS RESULTS IN POOR THREAD QUALITY, OVERSIZED THREADS.
AND BROKEN TAPS!
9. To change tap holders, release the tap holder by pushing up on the collar of the quick change chuck.