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Service
• Tool service must be performed only by the MATCO
authorized service centers listed . Service or maintenance
performed by unqualified personnel may result in a risk of
injury . Repair by unqualified personnel, use of unauthorized
parts, and failure to follow maintenance instructions may
create a risk of shock or injury .
SAVE THESE INSTRUCTIONS!
SPECIFIC SAFETY RULES
DO NOT let comfort or familiarity with product replace strict
adherence to cordless product safety rules. If you use
this tool unsafely or incorrectly, you can suffer serious
personal injury.
• Hold tool by insulated gripping surfaces when performing an
operation where the accessories may contact hidden wiring .
Contact with a "live" wire will also make exposed metal parts
of the tool "live" and shock the operator .
• Be aware that this tool is always in operating condition,
OPERATING INSTRUCTION
Installing Or Removing Battery Pack
1 . Your new battery pack is not fully charged . You may need to charge
before use .
2 . Make sure the forward/reverse lever is in the neutral position when
installing or removing a battery .
3 . To remove a battery, depress the front tab and pull the battery
forward and the tool in the opposite direction .
4 . To install a battery align the tool with the battery, place the front
of the tool about halfway up the battery, push forward until click is
heard indicating full installment .
Charging The Battery Pack
1 . Battery may not charge when it is above a certain preset temperature
limit . Allow temperature of battery to cool before charging .
2 . The charge process will take less than one hour .
3 . After charging, unplug the charger from the power source and stow
away in a safe place .
Tool Operation:
• Always be sure that the machine is switched off and the
battery cartridge is removed before installing or removing
the socket .
1 . To install the socket, push the socket onto the anvil as far as it will go .
2 . To remove the socket, simply pull the socket from the anvil .
3 . To start the tool, simply pull the trigger . Release the trigger to stop .
4 . For reversing the tool, use the forward/reverse switch on the drive unit .
The directions of the rotation are also shown on the face of the switch .
5 . Always check the direction of rotation before operation .
6 . Use the forward/reverse switch only after the tool comes to a complete
stop . Changing the direction of rotation before the tool stops may
damage the gears .
MCL1838IW
MCL1838IW 18V 3/8" Drive Impact Wrench
because it does not have to be plugged into an electrical outlet .
• Always be sure you have firm footing .
• Be sure no one is below when using the tool in high locations .
• Hold the tool firmly and use both hands .
• Keep hands and hair away from rotating parts .
• Do not leave the tool running . Do not force tool to stay in the
"on" position . Operate the tool only when hand-held .
• Do not touch the impact socket or the workpiece immediately
after operation; they may be extremely hot and could burn your
skin .
• Some material contains chemicals which may be toxic . Take
caution to prevent working dust inhalation and skin contact .
Follow material supplier safety data .
WARNING:
MISUSE or failure to follow the safety rules stated in
this instruction manual may cause serious personal
injury.
7 . Hold the tool firmly in place, make sure the socket is completely over
the nut . Apply forward pressure to the tool to the extent that the socket
will not slip off the nut . Pull the trigger to begin .
NOTE:
• Use the proper impact socket size for the nut that you intend to install
or remove .
• Hold the tool pointed straight at the nut . If you tighten the nut for a
time longer than it needs, the nut or point of the driver socket may
be overstressed, stripped, damaged, etc . When tightening a standard
nut in a steel plate, the proper tightening torque can be obtained in an
extremely short time (approx . 0 .1-0 .2 seconds) .
• Turn the tool off as soon as the impact sound is heard .
• When tightening nut M6 or smaller, carefully adjust pressure on the
switch trigger so that the nut is not damaged .
8 . The tightening torque is affected by a wide variety of factors including
the following .
• When the battery cartridge is discharged almost completely, voltage
will drop and the tightening torque will be reduced .
• Driver bit or socket bit: Failure to use the correct size driver bit or
socket bit will cause a reduction in the tightening torque .
• Driving a bolt: Even though the torque coefficient and the class of bolt
are the same, the proper tightening torque will differ according to the
diameter of the bolt .
9 . Even if the diameter of the bolts are the same, the proper tightening
torque will differ according to the torque coefficient, the class of the
bolt and the bolt length .
10 . The manner in which the tool is held or the driving position of the
material to be tightened will affect the torque .
Make sure that the impact wrench is turned off and the
battery cartridge is removed before carrying out any work
on the tool. To maintain product safety and
reliability, repairs, maintenance or adjustments should be
carried out by an authorized service center.
3
rev. 17/18/16
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