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Operating Instruction and safety manual 1/2” Air Impact Wrench(Twin Hammer) Model No.: 7431 IMPORTANT: Upon receipt of the product, read and follow all safety rules, operating instructions before first use it. And retain this manual for future reference. Residual risks Even when the tool is used as prescribed it is not possible to eliminate all residual risk factors.
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Technical Data Square drive……………………………………………………………………………………1/2”(13mm) Capacity Bolt Size ……………………………………………………………………………...5/8” (16mm) Free speed………………………………………………………………………………………7,500rpm Max torque……………………………………………………………………………………..420ft/lb(567N.m) Avg. air consumption…………………………………………….…………………………..5 cfm(142.5 l/min) Operating pressure……………………………………………………………………………...90psi(6.3bar) Air inlet size…………………………………………………………………………………….1/4” Air hose …………………………………………………………………………………………3/8”ID Weight……………………………………………………………………..…………………...5.70Lbs(2.6kgs) A weighted sound pressure level………………………………………………………………. 92.6dB(A) Sound power level………………………………………………………………………………103.6dB(A) Vibration in the handle………………………………………………………….…….………..2.8m/s Important Safety Rules 1 When using the tool always wear safety goggles, an appropriate face mask or respiratory equipment.
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Air supply 1. Ensure wrench air valve (or trigger) is in the “off” position before connecting to the air supply. 2. You will require an air pressure of 90psi, and an air flow according to specification. 3. WARNING! Ensure the air supply is clean and does not exceed 90psi while operating the wrench. Too high an air pressure and unclean air will shorten the product life due to excessive wear, and may be dangerous causing damage or personal injury.
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Loading and operation WARNING: Ensure you read, understand and apply safety instructions before use. 1. Only use impact sockets which are specifically designed for use with a impact wrench. 2. Connect the wrench to the air hose . 3. Place the socket over the subject nut and depress the trigger to operate the wrench. 4.
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Trouble Shooting The following form lists the common operating system with problem and solutions. Please read the form carefully and follow it. WARNING: If any of the following symptoms appears during your operating, stop using the tool immediately, or serious personal injury could result. Only a qualified persons or an authorized service center can perform repairs or replacement of tool.
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Exploding view & Parts list Description Description Description Description Warning Label Inlet Spring Rotor O-ring Oil Inlet cup Air Inlet Plug Rotor Blade Retainer O-ring Steel ball Dust Free Cover Anvil Bushing Adj.Spring Housing Cylinder Washer Regulating Screw Bolt Front Plate Gasket O-ring Trigger...
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