Ditch Witch Air Adaptor User Manual

All Terrain Air Hammer

Attachment Operator’s Manual

Publication number: ID0273478; page 1 of 11

Foreword

This guide is an important part of your attachment. It provides safety, operation, parts, and maintenance information to help you use and maintain your Ditch Witch equipment.

Read this manual and the unit operator’s manual before using your attachment. Keep it with the equipment at all times for future reference. If you sell your equipment, be sure to give this manual to the new owner.

If you need a replacement copy, contact your Ditch Witch dealer. If you need assistance in locating a dealer, visit our website at www.ditchwitch.com or write to the following address:

The Charles Machine Works, Inc. Attn: Marketing Department PO Box 66 Perry, OK 73077-0066 USA

The descriptions and specifications in this manual are subject to change without notice. The Charles Machine Works, Inc. reserves the right to improve equipment. Some product improvements may have taken place after this manual was published. For the latest information on Ditch Witch equipment, see your Ditch Witch dealer.

Thank you for buying and using Ditch Witch equipment.

Safety

• Read and follow all safety precautions.

• Contact One-Call (888-258-0808) or your local utility company. Have all underground lines and cable located and marked before operating equipment. Know appropriate actions to take in case you damage a utility. If you damage a utility, contact utility company.

• Mark jobsite clearly and keep spectators away.

• Wear personal protective equipment. Do not wear jewelry or loose clothing that can catch on controls.

• Use equipment carefully. Stop operation and investigate anything that does not look or feel right.

• Contact your Ditch Witch dealer if you have any question about operation, maintenance, or equipment use.

Jobsite hazards could cause death or serious injury. Use correct equipment and work methods. Use and maintain proper safety equipment.

Improper control function could cause death or

serious injury. If control does not work as described in instructions, stop machine and have it serviced.

Incorrect procedures could result in death, injury,

or property damage. Learn to use equipment correctly.

Moving parts could cut off hand or foot.

Stay away.

All Terrain Air Hammer Attachment

Operation and Parts Manual

Issue number 2.0 OM-1/12

Part number ID0273478

by The Charles Machine Works, Inc.

Ditch Witch, CMW, and Jet Trac are registered trademarks of The Charles Machine Works, Inc.

cause death or serious injury. Know location of lines and

Electrical shock. Contacting electrical lines will

stay away.

Crushing weight could cause death or serious injury. Use proper procedures and equipment or stay away.

Flying objects may cause injury. Wear hard hat

and safety glasses.

Exposure to high noise levels may cause hearing

loss. Wear hearing protection.

Pressurized fluid or air could pierce

skin and cause injury or death. Stay away.

Hot parts may cause burns. Do not touch until

cool.

Moving tools will kill or injure. Shut off drill string power when anyone can be struck by moving or thrown tools. Never use pipe wrenches on drill string.

CMW

All Terrain Air Hammer

Attachment Operator’s Manual

Publication number: ID0273478; page 2 of 11

Improper handling or use of chemicals may result in illness, injury, or equipment damage. Follow instructions on labels and in material safety data sheets (MSDS).

Overview

a38om001t.eps

Component Description

1. Bit holds cutting teeth that chip rock

at impact

2. Hammer houses the percussion piston

3. Hydrocyclone separates pressurized air from

water in foam mix

The All Terrain Air Hammer is designed for use on directional drills in hard rock applications. The air hammer uses air pressure to create percussive force, which drives cutting inserts into rock. After the “drive” air has produced impact, it is expelled as “return” air that removes cuttings. Foam mix injected into the bore through the drill string is used to suppress dust and clean the bore.

Prepare Foam Mix

The manufacturer recommends the use of Baroid QuikFoam® foaming agent (p/n 255-1023) to improve holecleaning capability of the airstream and reduce dust during drilling.

As a general guideline, use 0.25-1 gal (0.9-3.8 L) of foam agent for each 100 gal (379 L) of water.

For more information, see the instructions for foam drilling system mixtures included with the foaming agent or contact your Ditch Witch dealer.

Improper handling or use of chemicals may result in illness, injury, or equipment damage. Follow instructions on labels and in material safety data

sheets (MSDS).

To help avoid injury:

• Flammable.

• Do not allow QuikFoam to enter sewer, water way, or low area. Contain all product and dispose properly.

• Quik-Foam may cause eye, skin, and respiratory irritation. May cause headache, dizziness, and other central nervous system affects. May be absorbed through the skin. May be harmful if swallowed. Repeated overexposure may cause liver and kidney effects.

• Use appropriate protective equipment.

• See Quik-Foam MSDS (available on www.ditchwitch.com) for more information.

CMW

All Terrain Air Hammer

Attachment Operator’s Manual

Publication number: ID0273478; page 3 of 11

Prepare Entry Point

Flying objects may cause injury. Wear hard

hat and safety glasses.

a38om005t.eps

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.

IMPORTANT: It may be necessary to cover the entry pit with a sheet of plywood or other durable material to contain blowback material.

Connect Air Adaptor

To operate the air hammer, modify the drilling fluid pump onboard the drilling unit to provide air flow to the hammer.

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.

a38om003t.eps

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.

CMW

All Terrain Air Hammer

Attachment Operator’s Manual

Publication number: ID0273478; page 4 of 11

Connect Air Hammer

IMPORTANT: The procedures below require the use of

a Hydratong wrench to tighten connections. See “Use Hydratong Wrenches” on page 4.

Install Bit

1. Lubricate bit splines and chuck threads with copper or zinc based tool joint compound.

2. Slide chuck over bit splines and secure with retaining rings.

3. Thread bit/chuck assembly into hammer housing.

4. Use appropriate bit ring and chrome pins included with air hammer with Hydratong wrench. Place chain tongs no less than 6.5” (152 mm) and no more than 17” (432 mm) from chuck.

NOTICE: Using wrench tongs to grip the hammer casing in the wrong location can damage threads or distort the casing.

Use Hydratong Wrenches

To attach or remove downhole tools, use the Hydratong wrenches to join or break the joint.

Incorrect procedures could result in death, injury, or property damage. Learn to use equipment correctly.

To help avoid injury:

• Ensure only chain tongs and chain are in contact with pipe (shown) and that chain is correctly wrapped. Do not use Hydratong with chain bushing pin touching pipe (shown).

• Stand away from the Hydratong when using it.

Moving tools will kill or injure. Shut off drill string power when anyone can be struck by moving or thrown tools. Never use pipe wrenches on drill string.

5. Tighten to 6000 ft•lb (8135 N•m).

Assemble Drill String

1. Connect air hammer to Rockmaster beacon housing using Hydratong wrench and air hammer wrench insert.

2. Follow the instructions in your drilling unit operator’s manual to prepare and calibrate the beacon before drilling.

3. Connect air hammer/beacon assembly to drill string.

1. To join, apply tool joint compound to threads and hand tighten joint.

2. Attach Hydratong in either the join or break position.

Join Break

IMPORTANT: Ensure arms are crossed

before using wrench.

• Attach chain tongs (1) to both sides of joint.

Place tongs as close to joint as possible.

• Remove snapper pins (2) from slide pins (3), and

insert slide pins into wrench handles (4).

• Attach each end of hydraulic cylinder (5) to slide

pins and insert snapper pins.

3. Remove all slack from wrench and joint.

CMW

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