JT40/JT40 All Terrain Operator’s Manual Conduct a Bore - 125
Assemble Drill String
Assemble Drill String
AT Mode (AT Pipe)
1. Rockmaster
®
tool
2. bit
3. JT40 AT drill pipe
Prepare Rockmaster
®
Tool
1. Select bit. Ensure that bit and housing have suitable number of nozzles for jobsite conditions. See
page 163.
2. Install bit onto Rockmaster tool using the wrench set and scribe line technique. See page 169 for
correct procedures.
3. Ensure that Rockmaster tool is properly lubricated (from last usage). If using Rockmaster tool for the
first time, lubricate the tool:
• Remove rear plug from tool.
• Install zerk.
• Remove front plug.
• Rotate the tool by hand while pumping tool with WRG until grease comes out rear port.
• Reinstall front plug and add 1-5 pumps WRG.
• Remove zerk.
• Reinstall rear plug.
4. Install beacon, following beacon instructions for:
• battery replacement
• beacon positioning
5. Install beacon housing lid.
6. Follow beacon instructions to check beacon operation.
7. Follow tracker instructions to calibrate beacon.
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