MT1840
2
Rev. 06/18/08
MT1840 3/8" Mini Air Ratchet
This insTrucTion Manual conTains iMporTanT
safeTy inforMaTion.
read This insTrucTion Manual carefully and
undersTand all inforMaTion Before operaTing
This Tool.
•
Always operate, inspect and maintain this tool in
accordance with American National Standards
Institute Safety Code of Portable Air Tools (ANSI
B186.1) and any other applicable safety codes
and regulations.
• For safety, top performance and maximum durability
of parts,
operate this tool at 90 psig 6.2 bar max air pressure with
3/8" diameter air supply hose.
• Always wear impact-resistant eye and face
protection
when
operating
or
performing
maintenance on this tool.
• Always wear hearing protection when using this
tool. High sound levels can cause permanent hearing loss.
Use hearing protection as recommended by your employer
or OSHA regulation.
• Keep the tool in efficient operating condition.
• Operators and maintenance personnel must be
physically able to handle the bulk, weight and
power of this tool.
• Air powered tools can vibrate in use. Vibration,
repetitive motions or uncomfortable positions over extended
periods of time may be harmful to your hands and arms.
Discontinue use of tool if discomfort, tingling feeling or pain
occurs. Seek medical advice before resuming use.
• Air under pressure can cause severe injury. Never direct
air at yourself or others. Always turn off the air supply,
drain hose of air pressure and detach tool from air supply
before installing, removing or adjusting any accessory on
this tool, or before performing any maintenance on this
tool. Failure to do so could result in injury. Whip hoses
can cause
serious injury. Always check for damaged,
frayed or loose hoses and fittings, and replace immediately.
Do not use quick detach couplings at tool. See
instructions for correct set-up.
• Place the tool on the work before starting the tool.
• Slipping, tripping and/or falling while operating air tools can
be a major cause of serious injury or death. Be aware of
excess hose left on the walking or work surface.
• Keep body working stance balanced and firm. Do not
overreach when operating the tool.
• Anticipate and be alert for sudden changes in motion during
start up and operation of any power tool.
• Do not carry tool by the hose. Protect the hose from sharp
objects and heat.
• Tool shaft may continue to rotate briefly after throttle is
released. Avoid direct contact with accessories during and
after use. Gloves will reduce the risk of cuts or burns.
• Keep away from rotating end of tool. Do not wear jewelry
or
loose clothing. Secure long hair. Scalping canoccur if hair is
not kept away from tool and accessories. Choking can occur
if neckwear is not kept away from tool and accessories.
• Impact wrenches are not torque control devices
Fasteners with specific torque requirements must be
checked with suitable torque measuring devices after
installation with an impact wrench.
• Use only impact wrench sockets and accessories on this
tool.
• Do not lubricate tools with flammable or volatile
liquids such as kerosene, diesel or jet fuel.
• Do not force tool beyond its rated capacity.
• Do not remove any labels. Replace damaged labels.
FAILURE TO OBSERVE THESE WARNINGS COULD RE SULT IN IN JU RY.
NOTE: Actual torque on a fastener is di rect ly related to joint hard-
ness, tool speed, condition of socket and the time the tool is allowed
to impact.
Use the simplest possible tool-to-socket hook up. Every connection
absorbs energy and reduces power.
OperatiOn
This ratchet wrench is rated at 3/8" USS bolt size. Rating must be
down graded for spring U bolts, tie bolts, long cap screws, double
depth nuts, badly rusted conditions and spring fas ten ers as they
absorb much of the impact power. When possible, clamp or wedge the
bolt to prevent springback.
Soak rusted nuts in pen e trat ing oil and break rust seal before
removing with im pact wrench. If nut does not start to move in three to
five sec onds use a larger size impact wrench. Do not use impact
wrench be yond rated ca pac i ty as this will dras ti cal ly reduce tool life.
The forward/reversing button is used to change the ro ta tion of the
tool. When the button is set to the right, the tool will turn in a right
hand ro ta tion. When the button is set to the left, the tool will turn in a
left hand ro ta tion.
