MasterCraft 058-9321-6 User manual

INSTRUCTION MANUAL
AIR-POWERED
IMPACT WRENCH
058-9321-6

TABLE OF CONTENTS
2
AIR-POWERED IMPACT WRENCH 058-9321-6
QUICK START GUIDE
TECHNICAL SPECIFICATIONS 3
SAFETY GUIDELINES 4–9
KEY PARTS DIAGRAM 10
IMPORTANT INFORMATION 11–13
OPERATING INSTRUCTIONS 14–15
MAINTENANCE 16–17
TROUBLESHOOTING 18–19
EXPLODED VIEW 20
PARTS LIST 21
WARRANTY 22–23

SAFETY GUIDELINES
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AIR-POWERED IMPACT WRENCH 058-9321-6
This manual contains information that relates to PROTECTING PERSONAL SAFETY and PREVENTING
EQUIPMENT PROBLEMS. It is very important to read this manual carefully and understand it
thoroughly before using the product. The symbols listed below are used to indicate this information.
Note- The word “Note” is used to inform the
reader of something he/she needs to know about
the tool.
PERSONAL SAFETY
These precautions are intended for the personal safety of the user and others working with the user.
Please take time to read and understand them.
DANGER!
Potential hazard that will result in serious
injury or loss of life.
WARNING!
Potential hazard that could result in
serious injury or loss of life.
CAUTION!
Potential hazard that may result in
moderate injury or damage to equipment.

SAFETY GUIDELINES
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AIR-POWERED IMPACT WRENCH 058-9321-6
DANGER!
Potential hazard that will result in serious injury or loss of life.
•Keep children away from the work area. Do not allow children to handle
power tools.
•Keep air hose away from heat, oil, and sharp edges. Check air hose for
wear before each use and ensure that all connections are proper.
•Always ensure that the workpiece is firmly secured leaving both hands free
to control the tool.
•Always ensure that the tool has stopped before putting it down after use, for
safety purpose and to prevent possible damage to the tool/user.
•Keep proper footing at all times in order to ensure correct balance.
•Do not use oxygen or any other combustible or bottled
gas to power air-powered tools. Failure to observe this
warning can cause explosion and serious personal injury
or death. Use only the compressed air to power the
air-powered tools. Use a minimum of 25' (7.6 m) of hose
to connect the tool to the compressor. Failure to comply
will result in serious injury or loss of life.
•Risk of electric shock: Do not expose the compressor to rain. Store it
indoors. Disconnect the compressor from power source before servicing.
Compressor must be grounded. Do not use grounding adaptors.
•Risk of personal injury: Do not direct compressed air from the air hose
towards the user or other personnel.
•Risk of inhallation: Never inhale the air produced by a compressor. Failure to
comply will result in serious injury or loss of life.
Oxygen
Hydrogen
Explosive
Combustible
MC-OM-02

SAFETY GUIDELINES
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AIR-POWERED IMPACT WRENCH 058-9321-6
•Risk of bursting: Do not adjust the pressure switch or safety valve for any
reason. They have been preset at the factory for this compressor’s maximum
pressure. Tampering with the pressure switch or the safety valve may cause
personal injury or property damage.
•Risk of burns: The pump and the manifold generate high temperatures. In
order to avoid burns or other injuries, do not touch the pump, the manifold,
or the transfer tube while the compressor is running. Allow the parts to cool
down before handling or servicing. Keep children away from the compressor
at all times.
•Risk of bursting: Make sure the regulator is adjusted so
that the compressor outlet pressure is set lower than the
maximum operating pressure of the tool. Before starting
the compressor, pull the ring on the safety valve to make
sure that the valve moves freely. Drain water from tank
after each use. Do not weld or repair tank. Relieve all
pressure in the hose before removing or attaching
accessories. MC-OM-22

SAFETY GUIDELINES
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AIR-POWERED IMPACT WRENCH 058-9321-6
WARNING!
Potential hazard that could result in serious injury or loss of life.
•Do not allow inexperienced or untrained individuals to operate the
Air-powered Impact Wrench.
•Always ensure that the accessories such as impact sockets are specially
designed for use with the tool. Also ensure they are secured and correctly
fastened before connecting the tool to the air supply.
•Do not use the Air-powered Impact Wrench for any task other than that
which it is designed to perform.
•Do not use Air-powered Impact Wrench unless you have been instructed on
its use. Only a qualified person should use the tool.
•Pull the pressure safety valve ring of the compressor everyday in order to
ensure that the valve is functioning properly.
•Locate the compressor in a well-ventilated area for cooling, and a minimum
of 12" (31 cm) away from the nearest wall.
•Protect the air hose and the power cord from damage and puncture. Inspect
them for weak or worn spots every week, and replace them if necessary.
•Always wear hearing protection when using an air compressor. Failure to do
so may result in hearing loss.
•Do not carry the compressor while it is running.
•Do not operate the compressor if it is not in a stable position.
•Do not operate the compressor on a rooftop or in an elevated position that
could allow the unit to fall or be tipped over.

SAFETY GUIDELINES
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AIR-POWERED IMPACT WRENCH 058-9321-6
CAUTION!
Potential hazard that may result in moderate injury or damage to
equipment.
•Always ensure that the tool has stopped before connecting to the air supply.
•Do not wear watches, rings, bracelets, or loose clothing when using any air
tool.
•Do not overload the tool. Allow the tool to operate at its optimum speed for
maximum efficiency.
• Do not use a tool that is leaking air, with missing or damaged parts, or that
requires repairs. Verify that all screws are securely tightened.
• For optimal safety and tool performance, inspect the tool daily in order to
ensure free movement of the trigger, safety mechanisms, and springs.
•Always keep your air tool clean and lubricated. Daily lubrication is essential
to avoid internal corrosion and possible failures.
•Ensure that the floor is not slippery and wear non-slip shoes. Floors should
be kept clean and clear.
•Always follow all workshop safety rules, regulations, and conditions when
using the Air-powered Impact Wrench.
•Do not carry the tool by the air hose.
•Do not use the tool near or below freezing temperatures, as doing so may
cause tool failure.
•Do not store the tool in a freezing environment to prevent ice formation on
the operating valves of the tool, as doing so may cause tool failure.
•Handling and storage of oil: Use with adequate ventilation. Avoid contact of
oil with eyes, skin, and clothing. Avoid breathing spray or mist. Store in a
tightly closed container in a cool, dry, well-ventilated area free from
incompatible substances.