Ditch Witch AT Air Hammer - Manual (Page 3)

CMW
®
All Terrain Air Hammer
Attachment Operator’s Manual
Publication number: ID0273478; page 3 of 11
Prepare Entry Point
1. Dig an entry pit approximately 10-15 ft (3-4.5 m) in
front of the drilling unit to collect spoils and foam
blowback. The pit should be approximately 6 ft (1.8
m) long, 3 ft (0.9 m) wide, and deep enough to
expose the drill string.
2. Drill into the ground, through the entry pit, and
continue bore.
Connect Air Adaptor
To operate the air hammer, modify the drilling fluid pump
onboard the drilling unit to provide air flow to the hammer.
Note: See parts pages for a complete list of parts.
1. Disconnect washwand from drilling fluid pump inlet.
2. Install check valve (4) in drilling fluid pump inlet.
3. Connect elbow and T-fitting (3, 2) to check valve.
4. Connect air adaptor (1) to rear of T-fitting.
5. Connect whip check cable (6) and air compressor
hose (5) to air adaptor.
Flying objects may cause injury. Wear hard
hat and safety glasses.
IMPORTANT: It may be necessary to cover the
entry pit with a sheet of plywood or other
durable material to contain blowback material.
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Pressurized fluid or air could pierce
skin and cause injury or death. Stay away.
To help avoid injury:
• Escaping pressurized fluid or air can cause injury or pierce skin
and poison.
• Before disconnecting a hydraulic line or pressurized air line,
turn engine off and operate all controls to relieve pressure.
Lower, block, or support any raised component with a hoist.
Cover connection with heavy cloth and loosen connector nut
slightly to relieve residual pressure.
• Before using system, check that all connections are tight and
all lines are undamaged.
• Fluid and air leaks can be hard to detect. Use a piece of
cardboard or wood, rather than hands, to search for leaks.
• Wear protective clothing, including gloves and eye protection.
• If you are injured, seek immediate medical attention from a
doctor familiar with this type of injury.
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