SCMTTA-075 | SCMTTA-075 IMPACT WRENCH instruction manual

Always operate, inspect and maintain this tool in accordance with all regulations (local, state, federal and country) that may apply
to hand-held / hand-operated pneumatic tools.
For maximum performance, the air coupler on the wall should be the next size larger than the air coupler used on the tool. The
coupler closest to the tool should not be smaller than the proper air supply hose size.
For safety, top performance, and maximum durability of parts, operate this tool at 90 psig (6.2 bar / 620 kPa) maximum air
pressure at the inlet with 3/8’’ (10mm) inside diameter air supply hose. Adequate air supply volume is required for full power.
Restrictions in the supply and volume will cause a drop in air pressure when the trigger is pulled resulting in lower power.
Always turn off the air supply and disconnect the air supply hose before installing, removing or adjusting any accessory on this
tool, or before performing any maintenance on this tool.
Do not use damaged, frayed or deteriorated air hoses and fittings.
Be sure all hoses and fittings are the correct size and are tightly secured.
Always use clean, dry air at 90 psig maximum air pressure. Dust, corrosive fumes and/or excessive moisture can ruin the motor of
an air tool.
Inject the tool every 100-200 cycles with 3-5 grams of grease. Applications vary and grease may need applied more in colder
climates/conditions and less in hotter climates/conditions. The grease that should be used should be Petroleum or Synthetic, NLGI
Grade 2, -4/2300F(-20/1100C). The tool has a 1/8” Flush type grease fitting. If lower performance is observed immediately after
adding grease, service is indicated to remove the build-up within the clutch housing.
Do not lubricate tools with flammable or volatile liquids such as kerosene, diesel or jet fuel.
Do not remove any labels. Replace any damaged label.
The use of a hose whip is recommended. A coupler connected directly to the air inlet increases tool bulk and decreases tool
The regulator has 3 power positions represented by dots on the dial. Position 1 is the lowest and 3 is full power. To set the tool
power with the regulator, turn the dial until the power setting represented by 1, 2 or 3 dots is under the lever in the forward position
as shown in Figure A. To assure maximum power in reverse, place the power setting in power setting 3. The triangle arrows on the
handle represent forward and reverse.
The Forward / Reverse Lever must be fully engaged in either the forward or reverse position to ensure the tool works with maximum
performance. If the Forward / Reverse Lever is positioned in the middle (see example below, bottom left picture) between forward
and reverse, the tool will not be as efficient and powerful.
Forward/Reverse Lever
Forward Position
Power Setting
Reverse Position
Figure A
Not Engaged - No Power
Power Setting - 1 (Low)
Power Setting 2
Power Setting 3 (Max)
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