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Trench Systems and Equipment (continued)
Chain Type
Chain Type
2–pitch
4–pitch
Alternating side bar
Bolt-on adapters
Combination

Drill

Digging the Trenches
1. Mark planned bore path and all located utility
lines with flags or paint.
2. Dig both trenches at least 10 cm (4 inches)
wide and 45.72 cm (18 inches) deep.
3. Dig the approach trench
(7 ft) long.
Note:
perpendicular to the sidewalk
4. Dig the target trench
182.88 cm (6 ft) long.
Note:
across from the approach trench.
Boring the Hole
Contact with the rotating shaft will cause death or serious injury. Stay at least 2 m (6
ft).
To help avoid injury
• Keep everyone at least 3 m (10 ft) away from the drill string and machine unless
the rod guide tool is need.
• Never force the drilling process. The drilling bit will drift off course and the rod
sections may bow or break. Proceed slowly and carefully.
• Never drill with a bent rod section.
3467-222A
The approach trench should be
to be 91.44 cm (3 ft) to
The target trench should be centered
Features
More teeth for smoother cutting
Standard chain
Prevents soil compaction on chain
Allows easy configuration changes
Provides pick and shovel effect
at least 216.36 cm
or driveway.
DANGER
Page 5–16
g008476
Operation: During Operation

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