Figure 501. Drill spindle 2. Pipe7. Continue to move the drill carriage slowly down theframe until the male threads on the pipe are underthe thread-joint-compound applicator and applythread-joint compound to the threads.8. Release and retract the pipe gripper, rotating it all theway out to the third row of pipes.Important: Ensure that you fully retract thepipe gripper and rotate it all the way out or thecarriage may collide with the gripper, damagingthe machine.9. Continue to rotate the drive spindle clockwise, untilthe male pipe threads are fully seated into the sondehousing or the lead bar.Note: Torque the threads to 2305 N-m (1700 ft-lb).Installing the Drill Head1. Using the exit-side-lockout transmitter, enable the exitside lockout.WARNINGIf the drill rotates or extends while you orothers are manually working on the drill bit orpipe in front of the machine, the worker couldget caught in the bit or pipe causing seriousinjury, amputation, or death.• Enable the exit-side lockout on theexit-side-lockout transmitter beforeapproaching the dill bit or pipe whenattached to the machine. This will disablethe drill carriage.• Do not wear loose clothing or jewelry whenworking on a drill bit or pipe attached tothe machine. Tie long hair up and out ofthe way.2. Hand thread the lead bar onto the pipe threads thenclear away from the front of the machine.3. When the area is clear of people, disable the exit-sidelockout using the exit-side-lockout transmitter(the OK-to-Drill light on the control panel shouldilluminate); press the exit-side-lockout, reset switch onthe control panel.4. Pull the drill pipe and lead bar back through the pipeguide and into the wrenches, aligning the thickenedupper joint of the lead bar with the upper wrench(Figure 51).Important: Do not clamp the wrench on the bodyof a pipe or it may damage the pipe. Grip the pipeson the thickened area near the joint.Figure 511. Drill pipe 3. Lower wrench (stationarywrench)2. Upper wrench(makeup/breakoutwrench)4. Lead bar50