Systems and Equipment - 104
JT520 Operator’s Manual
Downhole Tools
CMW
Backreamers
A backreamer enlarges the hole as pipe is pulled back through the bore. No one backreamer works well in
all conditions. These charts are meant as a guideline only. See your local Ditch Witch dealer for soil
conditions and backreamer recommendations for your area. Also see our interactive Downhole Tool
Selector at
www.ditchwitch.com
.
•
1 = best
•
2 = good
•
3 = fair
•
4 = not recommended
Backreamer
Sandy
Soil
Soft Soil
Medium
Soil
Hard
Soil
Rocky
Soil
Soft
Rock
Hard
Rock
Beavertail
3
1
1
1
3
4
4
Three Wing
4
3
3
2
1
1
4
Water Wing
4
3
2
1
2
2
4
Compact Fluted
1
1
2
2
2
3
4
Kodiak
4
3
3
2
1
2
4
Rhino Rock
4
4
4
4
3
2
1
Rockmaster
4
4
4
4
3
1
1
Compaction
Cone
1
2
3
4
4
4
4
HC Hard
Condition
4
3
2
1
1
4
4
ST Saw Tooth
2
2
1
2
2
3
4
MX Mixer
2
2
3
4
4
4
4
CT Cutter
3
2
1
2
3
4
4
EX Expander
1
2
3
4
4
4
4
Fluted Cone
1
1
2
2
2
3
4
IMPORTANT:
For soil definitions, see the chart on the previous page.
Summary of Contents for JT520
Page 1: ...JT520 Issue 1 1 Operator s Manual CMW 053 1219...
Page 59: ...Prepare 58 JT520 Operator s Manual Check Supplies and Prepare Equipment CMW...
Page 63: ...Drive 62 JT520 Operator s Manual Shut Down Unit CMW...
Page 71: ...Transport 70 JT520 Operator s Manual Tow CMW...
Page 113: ...Systems and Equipment 112 JT520 Operator s Manual Drill Pipe CMW...
Page 117: ...Complete the Job 116 JT520 Operator s Manual Stow Tools CMW...
Page 141: ...Service 140 JT520 Operator s Manual As Needed CMW...
Page 145: ...Specifications 144 JT520 Operator s Manual CMW...
Page 148: ......
Page 149: ......
Page 150: ...JT520 Operator s Manual Service Record 149 CMW Service Record Service Performed Date Hours...
Page 151: ...CMW Service Record 150 JT520 Operator s Manual Service Performed Date Hours...
