Electric drills have become an essential tool in every DIY enthusiast’s toolkit. Among various brands, DeWalt stands out for its reliability and performance, particularly the DeWalt DCD790 drill model. However, with constant use, even the finest tools may require a little TLC. If you find your DeWalt DCD790 no longer performs like it used to, don’t fret! This detailed guide will walk you through the process of rebuilding your device, ensuring it returns to optimal performance.
Understanding the DeWalt DCD790 Drill
Before diving into the rebuilding process, it’s critical to understand what makes the DeWalt DCD790 drill so popular. This model is known for its lightweight design, powerful brushless motor, and a two-speed transmission, offering versatility for a variety of applications, from drilling to driving screws.
While its impressive specifications speak for themselves, wear and tear can take their toll, particularly on the battery and motors. This guide focuses on how to effectively rebuild the DeWalt DCD790, enhancing its lifespan and performance.
What You Need for the Rebuild
Rebuilding your DeWalt DCD790 drill requires a few essential tools and replacement parts. Here’s a breakdown of what you’ll need to get started:
Necessary Tools
- Phillips and flathead screwdrivers
- T25 Torx bit
- Multimeter
- Heat gun (optional)
- Work gloves
Replacement Parts
- New battery cells (if applicable)
- Brushless motor (if necessary)
- Charger (if the old one is faulty)
- Trigger switch (if damaged)
Step-by-Step Guide to Rebuilding Your DeWalt DCD790
Now that you have your tools and parts ready, let’s delve into the rebuilding process of the DeWalt DCD790 drill.
Step 1: Safety First
Before starting the rebuild, ensure your safety by wearing the appropriate gear, including work gloves and safety glasses. Make sure that your drill is completely turned off and remove the battery to avoid any accidents during the process.
Step 2: Disassemble the Drill
To access the internal components of your DCD790, you must disassemble it carefully:
-
Remove the Battery and Chuck: Start by taking out the battery. Next, use the appropriate screwdriver to remove the chuck from the drill.
-
Unscrew the Housing: Using the T25 Torx bit, begin unscrewing the housing from the rear to the front. Be cautious, as some screws might be concealed under labels or rubber caps.
-
Open the Body: Gently pull apart the two halves of the drill body. Keep track of the screws and small parts as you go.
Step 3: Inspect the Components
With the drill’s internal components exposed, inspect each part for signs of wear or damage. Here are some typical areas to check:
Motor
Examine the motor closely. If you notice burnt smells or visible burn marks, it’s likely that the motor needs replacement.
Trigger Switch
Check the trigger switch for any signs of corrosion or damage. If the switch is not responsive, you may need to replace it.
Battery Pack
Assess the battery pack for any signs of leakage, swelling, or corrosion. If the battery appears damaged, it’s time to replace the cells.
Step 4: Replace Damaged Parts
Once you’ve identified damaged components, it’s time for replacement.
Installing a New Motor
- Disconnect the old motor from the wiring harness.
- Attach the new motor using the clips provided, ensuring it’s firmly in place.
- Reconnect any wires to match the original configuration.
Replacing the Trigger Switch
- Simply unclip the old switch and clip in the new one.
- Double-check that the connections are secure.
Rebuilding the Battery Pack
- If you’re replacing the battery cells, carefully remove the old cells.
- Ensure the new cells are of the same voltage and type as the original ones before soldering them in place.
Step 5: Reassemble the Drill
Once all the necessary parts have been replaced, it’s time to carefully reassemble your DCD790.
- Align the two halves of the drill body and secure them using the screws you initially removed.
- Reattach the chuck and ensure it is tightly secured.
Step 6: Test Your Rebuilt Drill
With the drill fully reassembled, it’s time for the moment of truth. Reinsert the battery and test the drill by following these steps:
- Select the desired speed setting.
- Try drilling into a piece of scrap wood or another test material.
- Listen for any unusual sounds and monitor the performance closely.
If the drill performs well and runs smoothly, congratulations! You have successfully rebuilt your DeWalt DCD790.
Maintaining Your DeWalt DCD790 for Longevity
Now that your DCD790 is up and running again, maintaining it will help ensure long-lasting performance and avoid future rebuilds. Here are a few tips:
Regular Cleaning
Keep the drill clean by removing dust and debris after each use. Avoid using water; instead, use a dry cloth or compressed air for internal cleaning.
Battery Care
Always store the battery in a cool, dry place. Avoid discharging it completely before recharging, as this can shorten its lifespan.
Utilize Original Parts
When replacements are needed in the future, always seek original DeWalt parts. Although they might be slightly more expensive, they ensure compatibility and reliability.
Periodic Inspections
Make it a habit to inspect your drill every few months. Regular checks can catch potential issues before they develop into bigger problems.
Conclusion
Rebuilding your DeWalt drill model DCD790 may seem daunting, but with the right tools and a structured approach, you can breathe new life into your power tool. By following the steps outlined in this guide, you not only save money on repairs but also gain satisfaction from restoring a reliable device that assists you in your tasks.
Whether you are a home improvement enthusiast or a seasoned professional, your DeWalt DCD790 will serve you much longer with proper care and maintenance. Don’t forget to follow the maintenance tips to ensure that this powerful ally remains in excellent condition for many more projects to come. Revitalize your tools and your projects will flourish!
What is the DeWalt DCD790 drill?
The DeWalt DCD790 is a compact and versatile cordless drill designed for both professional contractors and DIY enthusiasts. It features a brushless motor for increased efficiency and runtime, making it ideal for a variety of drilling and driving tasks. The drill is lightweight, which makes it easier to handle during extended use, and offers two speed settings for enhanced control and accuracy.
Additionally, the DCD790 is equipped with a keyless chuck, allowing for quick and easy bit changes. Its ergonomic design ensures comfortable grip and reduces fatigue, while the built-in LED light illuminates dark work areas. This makes the DeWalt DCD790 a popular choice for anyone looking for a reliable and efficient drill.
What are common issues with the DCD790 drill?
Common issues with the DeWalt DCD790 drill include battery-related problems, such as insufficient charging or the battery not holding a charge. Over time, rechargeable batteries can degrade, which affects their performance. Users may also experience problems with the drill’s motor if it becomes clogged with dust or lacks lubrication, which can lead to overheating or reduced operational efficiency.
Another frequent issue is the chuck not securing the drill bit properly. This can happen if debris gets into the chuck mechanism, preventing it from gripping the bit firmly. Regular maintenance and cleaning can help mitigate these problems and ensure the drill operates optimally over time.
How do I troubleshoot battery issues?
To troubleshoot battery issues with the DeWalt DCD790, start by inspecting the battery for any visible damage or corrosion. If the battery appears dirty, you can clean the contacts with a dry cloth or a small brush. Make sure the battery is seated correctly in the drill and is charged using a compatible charger. If the battery still doesn’t hold a charge after this, it might be time to consider replacing it.
If you suspect the charger is malfunctioning, try using a different charger to see if the battery charges properly. Additionally, check the power source to ensure it is working. If issues persist, consult the user manual or contact DeWalt customer service for further assistance and potential repair options.
What steps should I take to clean the drill?
To clean the DeWalt DCD790 drill, begin by removing the battery and any attached drill bits. Use a soft cloth to wipe down the exterior surfaces, paying close attention to the grip and chuck. For stubborn grime, you can lightly dampen the cloth with water or mild detergent—just ensure that no moisture gets into electrical components.
Next, clear any debris from the chuck by rotating it with a brush or using compressed air. This ensures that the chuck mechanism operates smoothly. Finally, inspect and clean the vent areas around the motor to prevent excessive dust build-up, which can lead to overheating. Regular maintenance will extend the life of your DCD790 drill.
How can I improve the drill’s performance?
To improve the performance of the DeWalt DCD790 drill, you can start by ensuring that you are using the right drill bits for your specific tasks. High-quality bits designed for metal, wood, or masonry can significantly enhance drilling efficiency and precision. Additionally, using drill bits that are sharp and in good condition will help reduce strain on the motor.
Another essential tip is to regularly maintain the drill by cleaning and lubricating moving parts as needed. Check the battery regularly and replace it as necessary to ensure optimal performance. Finally, avoid overloading the drill by not applying excessive pressure when in use; instead, allow the tool to do the work at its optimal speed.
Is it possible to replace parts of the DCD790?
Yes, it is possible to replace various parts of the DeWalt DCD790 drill. Commonly replaced components include the battery, chuck, and motor. DeWalt provides replacement parts through their service centers and authorized retailers, allowing users to maintain and repair their drills effectively without having to purchase a new one.
When replacing parts, it is crucial to ensure that you are using genuine DeWalt components to maintain compatibility and performance. Consult the drill’s user manual for specific part numbers and replacement instructions. If you are unsure about the replacement process, consider seeking assistance from a professional technician.
What safety precautions should I take while using the DCD790?
When using the DeWalt DCD790 drill, it is essential to prioritize safety to prevent accidents and injuries. Always wear appropriate personal protective equipment (PPE), such as safety glasses to protect your eyes from debris, and gloves for hand protection when handling drill bits or sharp objects. Ensure you are working in a well-ventilated area, especially if drilling into materials that produce dust or fumes.
Additionally, handle the drill with both hands for better control, particularly when using it for tougher tasks. Be aware of your surroundings, avoiding overhead hazards and ensuring that others are at a safe distance while you work. Always refer to the user manual for specific safety guidelines related to your drill model.
Where can I find replacement parts for the DeWalt DCD790?
Replacement parts for the DeWalt DCD790 can be found at various locations, including DeWalt’s official website, where they offer a dedicated section for parts and accessories. Additionally, many local hardware stores and home improvement centers carry DeWalt products and may have the specific parts you need. Online retailers such as Amazon, eBay, and specialized tool websites can also be good sources for genuine replacement parts.
When purchasing replacement parts, it’s vital to ensure that they are compatible with the DCD790 model. Always cross-reference part numbers from your user manual or official DeWalt listings. For more specialized components, consider contacting DeWalt’s customer service or visiting an authorized service center for assistance.