D7x11 Series II Navigator Directional Drill Operation 50-33
Step 5: Position or support trailing drill string to relieve bending load at the joint where reamer will be installed.
Step 6: Use a compact remote power breakout device to loosen joint.
Resuming Operation
Step 7: Remove breakout device and ensure no tools are attached to drill string.
Step 8: Press Run Button on transmitter and hold for two seconds to enable drilling operation, or return
key to machine.
Step 9: Ensure everyone is away from entire length of the drill string, then use drill unit to slowly reverse
rotate the drill string until the two halves are fully separated.
Step 10: Separate the two drill strings far enough for reamer installation.
Step 11: Follow “Lockout Procedure - With Remote Lockout,” page 30-11, or “Lockout Procedure - Without
Remote Lockout System,” page 30-13, and install reamer and swivel.
Step 12: Attach rod recycler adapter to drill rod and then attach to swivel.
Step 13: Follow Step 3 through remaining steps of “Short-String Method of Adding Drill Rod for Pre-Reaming,”
page 50-30.
WARNING: If there is a bending load at the joint, the drill rods on both sides of the joint could move
suddenly when the joint is separated. Serious injury could occur if you are struck.
DANGER: Wrench on rotating drill string can strike you. Death or serious injury
will result. Ensure all tools are removed from the drill string before rotation is
started.
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