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JT40/JT40 All Terrain Operator’s Manual
Conduct a Bore - 141
Backream
Backream
Sometimes it is necessary to drill a pilot hole first, then enlarge the hole to accommodate larger product.
As a general rule, the final hole should be 1.5 times larger than the diameter of the product being installed.
The number of passes needed depends on soil conditions. Do not try to increase hole size too much in one
pass. Several passes using successively larger reamers will save wear on machine.
Moving tools will kill or injure. Never use pipe wrenches
on drill string.
273-278
Jobsite hazards could cause death or serious injury. Use
correct equipment and work methods. Use and maintain proper safety
equipment.
274-050; 274-724 (2P)
To help avoid injury:
Continue to use strike system during backreaming.
Turning shaft will kill you or crush arm or leg. Stay away.
To help avoid injury:
•
Maintain two-way communication with tracker operator.
•
Begin backream only when tracker operator has communicated that everyone is clear of the
exposed backream string.
•
Do not allow anyone to stand to the side of the exposed drill string. Drill string and backreamer can
move sideways suddenly if rotated while away from the exit hole.
Содержание JT40
Страница 1: ...JT40 JT40 All Terrain HRC and LRC Issue 1 0 Original Instruction Operator s Manual 053 2966 ...
Страница 79: ...Controls 78 JT40 JT40 All Terrain Operator s Manual Battery Disconnect ...
Страница 113: ...Drive 112 JT40 JT40 All Terrain Operator s Manual Shut Down Unit ...
Страница 119: ...Transport 118 JT40 JT40 All Terrain Operator s Manual Retrieve ...
Страница 147: ...Conduct a Bore 146 JT40 JT40 All Terrain Operator s Manual Remove Pullback Device ...
Страница 199: ...Complete the Job 198 JT40 JT40 All Terrain Operator s Manual Stow Tools ...
Страница 241: ...Service 240 JT40 JT40 All Terrain Operator s Manual As Needed ...
Страница 247: ...Specifications 246 JT40 JT40 All Terrain Operator s Manual Declaration of Conformity Information ...
Страница 250: ......
Страница 251: ......
Страница 252: ...JT40 JT40 All Terrain Operator s Manual Service Record 251 Service Record Service Performed Date Hours ...
Страница 253: ...Service Record 252 JT40 JT40 All Terrain Operator s Manual Service Performed Date Hours ...