Owner manual

JT60/JT60 All Terrain Operator’s Manual Prepare - 79

Check Supplies and Prepare Equipment

Select Drilling Mode

Three drilling setups are available with this unit:

• AT rock mode

• AT dirt mode

• JT mode

Select the best setup based on jobsite conditions.

Once drilling mode has been selected, configure drilling unit to match mode.

Mode Situation used Downhole tools Capabilities

Rock

Rock, soft rock, other non-compressible

soils. Any other situation with difficult

steering because of hard soil

conditions.

• All Terrain drill pipe

• Rockmaster tool

• 60,000 lb (266 kN)

of thrust

• dither

• inner rotation

dirt

When one bore out of several can be

better or more quickly done with

conventional downhole tools. This bore

is such that changing to JT pipe is not

practical.

• All Terrain drill pipe

• beacon housing

• transition sub

• standard JT tools

• 60,000 lb (266 kN)

of thrust

• dither

• no inner rotation

JT Soft or intermittent soft rock or other

compressible soils.

• JT drill pipe

• standard JT tools

• 60,000 lb (266 kN)

of thrust

• no dither

• no inner rotation