MT2220 3 09/03/14
POWER MANAGEMENT SYSTEM
AND TOOL OPERATION
This tool includes a power management system that allows the operator
to adjust the amount of output power in the clockwise direction
(forward). There is no power management system present in the
counter-clockwise direction (reverse). To adjust the power output in
the forward direction, turn the dial left or right in the desired power
direction. Power output is indicated by enlarging black swoosh on back
housing. Lowest power setting indicated by thin swoosh area with
highest power setting being thickest swoosh area.
The power management system is only for reference and does not act
as specific power settings. This tool includes a tip valve variable speed
trigger design that further allows the operator to reduce the power
output.
This impact wrench is rated at 3/8" SAE bolt size. Rating must be down
graded for spring U bolts, tie bolts, long cap screws, double depth nuts,
badly rusted conditions and spring fasteners as they absorb much of
the impact power. When possible, clamp or wedge the bolt to prevent
springback.
Soak rusted fastener in penetrating oil and break rust seal before
removing with impact wrench. If fastener does not start to move in
three to five seconds use a larger size impact wrench. Do not use
impact wrench beyond rated capacity as this will drastically reduce tool
life.
NOTE: Actual torque on a fastener is directly related to joint hardness,
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.
AIR SUPPLY
Tools of this class operate on a wide range of air pressures. It is
recommended that air pressure measures 90 psig at the tool with the
trigger fully depressed and no load applied to the tool. Higher pressure
and unclean air will shorten tool life and may create a hazardous
condition.
Water in the air line will cause damage to the tool. Drain water from
air lines and compressor prior to running tool. Clean the air inlet filter
screen weekly. The recommended hook-up procedure can be viewed
in Figure 1.
The air inlet (Figure 2), used for connecting air supply, has standard 1/4"
NPT American Thread.
Line pressure should be increased to compensate for unusually
long air hoses (over 25 feet). Minimum hose diameter should be 3/8" I.D.
and fittings should have the same inside dimensions.
Ensure an accessible emergency shut off valve has been installed in
the air supply line and make others aware of its location.
Always turn off the air supply, drain hose of air pressure and detach
tool from air supply before installing, removing or adjusting any part or
accessory on this tool, or before performing any maintenance on this
tool.
TROUBLESHOOTING
Other factors outside the tool may cause loss of power or erratic
action. Reduced compressor output, excessive drain on the air line,
moisture or restrictions in air pipes or the use of hose connections of
improper size or poor conditions may reduce air supply. If
outside conditions are in order, and the tool still performs erratically,
disconnect tool from hose and take tool to your nearest Matco
authorized service center.
LUBRICATION & MAINTENANCE
Lubricate the air motor daily with high quality air tool oil. If no air line
oiler is used, run 1/2 oz. of oil through the tool. The oil can be squirted
into the tool air inlet or into the hose at the nearest connection to the air
supply, then run the tool. A rust inhibitive oil is acceptable for air tools.
After an air tool has been lubricated, oil will discharge through the
exhaust port during the first few seconds of operation. The exhaust
port must be covered with a towel before applying air pressure to
prevent serious injury.
FIG. 1
AIR INLET
FEATURES
• Customize dBA with exclusive removable muffler plate.
• Work easily with one-hand push button design and an overall weight of just 2.8 lbs
• Power through your day with rear housing power adjustment
• Take full control with variable speed trigger
• Get a grip with textured housing and durable ergonomic design
MT2220 3/8" Impact Wrench
Drain Daily
Regulator
Oiler
Quick Coupler
Leader
Hose
Nipple
Do Not Install
Quick Coupling
Here
Nipple
Filter
Air Supply
Whip Hose
FIG. 2
FORWARD/REVERSE
TRIGGER
WARNING
WARNING