Performance Tool M631

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Summary

Important Safety Information

Air Impact Wrench Safety

Follow specific safety guidelines for operating the impact wrench, including proper dressing and tool handling.

Air Source Requirements

Use clean, dry, regulated compressed air. Ensure compressor output matches tool needs for optimal performance and safety.

This document describes the 1/2 IN. DR. X-TREME IMPACT WRENCH, Stock Number M631, a powerful air-powered tool designed for tightening and loosening threaded fasteners.

Function Description

The impact wrench utilizes compressed air to generate rotational force, delivering high torque in short, rapid bursts (impacts). This mechanism makes it highly effective for tasks such as automotive repair, construction, and industrial assembly where strong fastening or loosening of nuts and bolts is required. The tool features a forward/reverse switch and a power regulator valve, allowing users to control the direction of rotation and the amount of torque applied.

Important Technical Specifications

Drive Size: 1/2 inch, compatible with standard 1/2-inch impact sockets.
Max Reverse Torque: 1010 ft. lbs. This indicates the maximum torque the wrench can deliver when loosening fasteners.
Max Forward Torque: 885 ft. lbs. This is the maximum torque available for tightening fasteners.
Working Torque: 50-750 ft. lbs. This range represents the typical torque output during normal operation, which can be adjusted via the power regulator.
Air Pressure: 90 p.s.i. (pounds per square inch) is the recommended operating air pressure for optimal performance.
Average Air Consumption: 7 CFM (cubic feet per minute). This specification helps determine the appropriate air compressor size needed to power the tool efficiently.
Free Speed: 9,500 RPM (revolutions per minute). This is the rotational speed of the anvil when no load is applied.
Air Inlet (N.P.T.): 1/4 inch. This is the size of the threaded port where the air supply hose connects.
Hose Size (I.D.): 3/8 inch. A 3/8-inch inner diameter air hose is recommended for optimal airflow and performance.
Weight: 4.9 lbs. This indicates the tool's relatively lightweight design, contributing to user comfort and reduced fatigue during extended use.

The tool also features adjustable torque settings for forward operation:

Setting 1 (Small Dot): 0-295 ft/lbs (+/-10%) – suitable for mounting fasteners.
Setting 2 (Medium Dot): 0-450 ft/lbs (+/-10%).
Setting 3 (Large Dot): 0-885 ft/lbs (+/-10%) – suitable for tightening fasteners. In reverse, the tool operates at its maximum power, delivering 0-1010 ft/lbs (+/-10%) for easy removal of threaded fasteners.

Usage Features

Forward/Reverse Switch: A prominent switch on the tool's housing allows for quick and easy selection of rotation direction. The arrow on the switch indicates the chosen direction, aligning with dots on the back housing for forward settings and a large dot for reverse.
Variable Speed Trigger: The trigger provides variable speed control, allowing the user to modulate the force applied based on the task requirements.
Power Regulator Valve: This feature allows for fine-tuning the torque output in forward mode. The three dots (small, medium, large) serve as reference points for different power levels, with "Setting 1" being the least powerful and "Setting 3" the most powerful for tightening. In reverse, the tool operates at maximum power.
Impact Socket Compatibility: Designed for use with impact sockets, which are specifically engineered to withstand the high forces generated by impact wrenches. Standard sockets should not be used.
Air Inlet: Equipped with a 1/4-inch N.P.T. air inlet for connecting to an air supply hose. Thread sealant tape is recommended for an airtight connection.
Ergonomic Design: The tool's design, including its weight and grip, aims to provide comfortable handling and control during operation. Users are advised to use both hands to control the wrench, especially given its powerful output.

Maintenance Features

Lubrication: Regular lubrication is crucial for extending tool life and maintaining performance. The manual recommends using an in-line oiler on the air supply line, which should be checked and filled with air-tool oil regularly. Alternatively, 2-3 drops of air tool oil should be placed into the male plug before each use.
Air Source Quality: The tool requires clean, dry, regulated compressed air. Users are advised to drain water from the air compressor tank daily and from air lines to prevent damage to the tool mechanisms.
Air Inlet Filter: The air inlet screen filter should be cleaned weekly, or as needed, to prevent blockages.
Cleaning: The tool should be cleaned with a cotton rag after each use to remove dirt and debris.
Storage: When not in use, especially for extended periods, the tool should be stored in a clean, dry, and safe environment, out of reach of children. If storing for a long time, a generous amount of lubrication should be applied, and the tool should be run for approximately 30 seconds to ensure even distribution of oil.
Hose and Connections Check: Air supply hoses should be checked for wear and leaks before each use, and all connections must be tight and secure.
Troubleshooting Guide: The manual includes a troubleshooting section to address common issues like insufficient power, suggesting solutions such as flushing and lubricating the tool, checking air supply, and replacing worn parts.

Safety Precautions: The manual emphasizes critical safety information, including wearing eye and ear protection, proper dress, maintaining a clean and well-lit work area, avoiding over-tightening fasteners, and disconnecting the tool from the air supply when changing accessories or performing maintenance. It also warns against repetitive motions and vibration, which can be harmful to hands and arms.