HILDA 1/2" Cordless Impact Wrench User Manual

1. Safety Information

WARNING: Read and understand all instructions. Failure to follow all instructions listed below may result in electric shock, fire, and/or serious personal injury.

WARNING: Always remove battery pack before changing or removing accessories. Only use accessories specifically recommended for this tool. Others may be hazardous.

WARNING: To reduce the risk of injury, wear safety goggles or glasses with side shields.

1.1. Work Area Safety

• Keep your work area clean and well lit. Cluttered benches and dark areas invite accidents.
• Do not operate power tools in explosive atmospheres, such as in the presence of flammable liquids, gasses, or dust. Power tools create sparks which may ignite the dust of fumes.
• Keep bystanders, children, and visitors away while operating a power tool. Distractions can cause you to lose control.

1.2. Personal Safety

• Stay alert, watch what you are doing, and use common sense when operating a power tool. Do not use tool while tired or under the influence of drugs, alcohol, or medication. A moment of inattention while operating power tools may result in serious personal injury.
• Dress properly. Do not wear loose clothing or jewelry, contain long hair. Keep your hair, clothing, and gloves away from moving parts. Loose clothes, jewelry, or long hair can be caught in moving parts.
• Avoid accidental starting. Be sure switch is in the locked or off position before inserting battery pack. Carrying tools with your finger on the switch or inserting the battery pack into a tool with the switch on invites accidents.
• Remove adjusting keys or wrenches before turning the tool on. A wrench or a key that is left attached to a rotating part of the tool may result in personal injury.
• Do not overreach. Keep proper footing and balance at all times. Proper footing and balance enable better control of the tool in unexpected situations.
• Use safety equipment. Wear eye protection. Dust mask, non-skid safety shoes, hard hat, or hearing protection must be used for appropriate conditions.

1.3. Electrical Safety

• A battery operated tool with integral batteries or a separate battery pack must be recharged only with the specified charger for the battery. A charger that may be suitable for one type of battery may create a risk of fire when used with another battery.
• Battery operated tool only can be used with specifically designated battery pack. Using any other batteries may create a risk of fire.

2. Product Overview

The HILDA 1/2" Cordless Impact Wrench is a versatile and powerful tool designed for various applications including scaffolding, tire repair, and general home DIY tasks. It features a brushless motor for efficiency and durability, an LED light for improved visibility, and stepless speed control for precise operation. This tool is compatible with Makita-style 18V batteries (battery not included).

3. Setup

3.1. Battery Installation

This impact wrench is designed to be compatible with Makita-style 18V batteries. Ensure the battery is fully charged before use.

1. Align the battery pack with the receptacle at the base of the tool handle.
2. Slide the battery pack firmly into place until it clicks, indicating it is securely locked.
3. To remove the battery, press the release button(s) on the sides of the battery pack and slide it out.

WARNING: Always remove the battery pack before performing any adjustments or maintenance on the tool.

3.2. Attaching Accessories

The wrench features a 1/2" square drive for impact sockets and is compatible with a 1/4" screwdriver bit adapter (not included).

1. Ensure the tool is off and the battery pack is removed.
2. For impact sockets, align the square opening of the socket with the 1/2" square drive on the tool and push firmly until it locks into place.
3. For screwdriver bits, insert a 1/4" hex shank adapter (if using) into the 1/2" square drive, then insert the desired screwdriver bit into the adapter.
4. Pull on the accessory to ensure it is securely attached before use.

4. Operating Instructions

4.1. Control Switch (Forward, Reverse, and Lock)

The control switch allows you to select the direction of rotation and lock the trigger. It can only be adjusted when the ON/OFF switch is not pressed. Always allow the motor to come to a complete stop before using the control switch.

• **Forward (Clockwise) Rotation**: Push the control switch in the direction shown for forward. Check the direction of rotation before use.
• **Reverse (Counterclockwise) Rotation**: Push the control switch in the direction shown for reverse. Check the direction of rotation before use.
• **Lock**: To lock the trigger, push the control switch to the center position. The trigger will not work when the control switch is in the locked position.

4.2. Starting, Stopping, and Controlling Speed

This tool can be operated at any speed from 0 to full speed using the trigger.

1. **To start the tool**: Pull the trigger. An LED light will turn on when the trigger is pulled.
2. **To vary the driving speed**: Simply increase or decrease pressure on the trigger. The further the trigger is pulled, the greater the speed.
3. **To stop the tool**: Release the trigger, and the electric brake will stop the tool instantly.

4.3. Impacting Techniques

The longer a bolt, screw, or nut is impacted, the tighter it will become. To help prevent damaging the fasteners or workpieces, avoid excessive impacting. Be particularly careful when impacting smaller fasteners because they require less impacting to reach optimum torque.

• Practice with various fasteners, noting the length of time required to reach the desired torque.
• Check the tightness with a hand-torque wrench. If fasteners are too tight, reduce the impacting time. If they are not tight enough, increase the impacting time.
• Oil, dirt, rust, or other matter on the threads or under the head of the fastener affects the degree of tightness.
• The torque required to loosen a fastener averages 75% to 80% of the tightening torque, depending on the condition of the contacting surfaces.
• On light gasket jobs, run each fastener down to a relatively light torque and use a hand torque wrench for final tightening.

4.4. Screwdriving Operation

Place the point of the driver bit in the screw head and apply pressure to the tool. Start the tool slowly and then increase the speed gradually. Release the switch trigger as soon as the clutch cuts in.

CAUTION: Make sure that the driver bit is inserted straight in the screw head, or the screw and/or bit may be damaged.

NOTE:

• When driving wood screws, predrill pilot holes to make driving easier and to prevent splitting of the workpiece. Refer to the table below for recommended pilot hole sizes.

4.5. Drilling Operation

First, turn the adjusting ring so that the pointer points to the drilling marking. Then proceed as follows:

• **Drilling in Wood**: Best results are obtained with wood drills equipped with a guide screw. The guide screw makes drilling easier by pulling the bit into the workpiece.
• **Drilling in Metal**: To prevent the bit from slipping when starting a hole, make an indentation with a center-punch and hammer at the point to be drilled. Use a cutting lubricant when drilling metals (exceptions: iron and brass, which should be drilled dry).
• **Drilling in Stone**: Use drill bits with diamond heads. Add water during the drilling process to prevent overheating.

CAUTION: Pressing excessively on the tool will not speed up the drilling. In fact, this excessive pressure will only serve to damage the tip of your bit, decrease the tool performance, and shorten the service life of the tool.

5. Maintenance

• **General Care**: Maintain tools carefully. Keep cutting tools sharp and clean. Properly maintained tools with sharp cutting edges are less likely to deviate and are easier to control.
• **Inspection**: Check for misalignment or binding of moving parts, breakage of parts, and any other condition that may affect the tool's operation. If damaged, ensure the tool is serviced before using. Many accidents are caused by poorly maintained tools.
• **Accessories**: Use only accessories that are recommended by the manufacturer for your model. Accessories that may be suitable for one tool may create a risk for injury when used on another tool.
• **Storage**: Disconnect the battery pack from the tool or place the switch in the locked or off position before storing. Store idle tools away from children and other untrained persons. Tools are dangerous in the hands of untrained users.

WARNING: Always remove the battery pack before performing maintenance, changing accessories, storing the tool, and any time the tool is not in use.

6. Troubleshooting

• **Tool Not Starting/Stopping**: If the switch does not turn the tool on or off, the tool is dangerous and must be repaired by qualified personnel.
• **Overheating/Continuous Use**: If the tool is operated continuously until the battery cartridge has discharged, allow the tool to rest for 15 minutes before proceeding with a fresh battery.
• **Weak Power/Low Torque**: Ensure the battery is fully charged. For optimal performance, ensure the correct accessory is used and applied with appropriate technique. The tool is rated for 520 N.m of torque. If the issue persists, the tool may require servicing by qualified repair personnel.

7. Specifications

7.1. Package Dimensions and Weight

• Length: 27 cm
• Width: 12 cm
• Height: 10 cm
• Weight: 1.2 kg

7.2. Charging Indicator Light Status

8. User Tips

• **Grease Application**: Some users have found that adding more grease to the tool before first use can optimize performance.
• **Home Use**: This impact wrench is highly recommended for various home DIY tasks, including automotive work like changing tires.
• **Ergonomics**: The tool is noted for its lightweight design, which helps reduce strain on the wrist during extended periods of use.

9. Warranty and Support

For warranty information, service, or support, please refer to the seller or manufacturer's official channels. Keep your purchase receipt as proof of purchase.

A detailed user manual in PDF format is available for download: HILDA Impact Wrench User Manual (PDF).