Ditch Witch AT Air Hammer - Manual (Page 4)

CMW
®
All Terrain Air Hammer
Attachment Operator’s Manual
Publication number: ID0273478; page 4 of 11
Connect Air Hammer
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.
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.
Use Hydratong Wrenches
To attach or remove downhole tools, use the Hydratong
wrenches to join or break the joint.
1. To join, apply tool joint compound to threads and
hand tighten joint.
2. Attach Hydratong in either the join or break position.
• 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.
IMPORTANT: The procedures below require the use of
a Hydratong wrench to tighten connections. See “Use
Hydratong Wrenches” on page 4.
NOTICE: Using wrench tongs to grip the
hammer casing in the wrong location can
damage threads or distort the casing.
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.
Join Break
IMPORTANT: Ensure arms are crossed
before using wrench.