Dewalt Dc840: Understanding Key Features, Comparisons, Manuals, And Reputable Buying Options

DeWalt DC840 Information

The DeWalt DC840 is a 20V MAX* brushless cordless 1/4 in. impact driver that delivers up to 1700 in-lbs. of torque and up to 3200 rpm. It is engineered to be lightweight without sacrificing power, making it ideal for a variety of demanding applications. Image of DeWalt DC840 impact driver

Specifications

FeatureSpecification
Voltage20V MAX*
Max Torque1700 in-lbs.
Max RPM3200
Chuck Size1/4 in. hex
Tool Weight3.5 lbs.
Battery Weight1.5 lbs. (each)
RuntimeUp to 200 fastenings per charge (4Ah battery)
LED LightYes
Belt ClipYes

Features

  • Brushless motor for longer run time and more power
  • Electronic variable speed trigger for precise control
  • 3-mode impact control for driving a variety of fasteners
  • High-performance chuck for fast and easy bit changes
  • LED light for work in low-light conditions
  • Belt clip for easy carrying

What's in the box

  • DeWalt DC840 impact driver
  • 2 x 20V MAX* 4Ah batteries
  • Battery charger
  • Belt clip
  • Tool bag

Conclusion

The DeWalt DC840 is a powerful and versatile impact driver that is ideal for a variety of demanding applications. It is lightweight and easy to use, making it a great choice for professional and DIY users alike.

Here are some additional pros and cons of the DeWalt DC840:

Pros:

  • Powerful brushless motor
  • Long runtime
  • Variable speed trigger
  • 3-mode impact control
  • High-performance chuck
  • LED light
  • Belt clip

Cons:

  • No carrying case included
  • No bit holder included

Overall, the DeWalt DC840 is a great choice for anyone looking for a powerful and versatile impact driver. It is lightweight, easy to use, and delivers plenty of power for most applications.

DeWalt DC840 Compare with Similar Item

a table comparison of the DeWalt DC840 and some similar items:

FeatureDeWalt DC840Makita XFD07ZMilwaukee M18 FUEL
MotorBrushlessBrushlessBrushless
Max speed2,000 RPM2,000 RPM2,000 RPM
Max torque1,500 inch-pounds1,500 inch-pounds1,200 inch-pounds
Weight6.5 pounds5.6 pounds6.3 pounds
Battery compatibilityDeWalt 20V MAXMakita 18V LXTMilwaukee M18
Price$229$249$299

As you can see, the DeWalt DC840 is a very capable impact wrench. It has a brushless motor for long life and high performance, and it can reach a maximum speed of 2,000 RPM. It is also relatively lightweight, at 6.5 pounds. However, it is more expensive than some of its competitors, such as the Makita XFD07Z and the Milwaukee M18 FUEL.

The Makita XFD07Z is a great option if you are looking for a lightweight and powerful impact wrench. It is only 5.6 pounds, but it can still reach a maximum speed of 2,000 RPM. It is also compatible with Makita's 18V LXT batteries, which are some of the most popular batteries on the market.

The Milwaukee M18 FUEL is another great option if you are looking for a powerful impact wrench. It has a maximum torque of 1,200 inch-pounds, which is more than the DeWalt DC840 and the Makita XFD07Z. It is also compatible with Milwaukee's M18 batteries, which are some of the most durable batteries on the market.

Ultimately, the best impact wrench for you will depend on your individual needs and budget. If you are looking for a lightweight and powerful impact wrench, the Makita XFD07Z is a great option. If you are looking for an impact wrench with the highest possible torque, the Milwaukee M18 FUEL is a great option. And if you are looking for the best value, the DeWalt DC840 is a great option.

DeWalt DC840 Pros/Cons and My Thought

The DeWalt DC840 is a cordless drill that has been on the market for a few years now. It is a popular choice among DIYers and professionals alike, thanks to its powerful motor and lightweight design.

Pros:

  • Powerful motor: The DC840 has a 15 amp motor that can handle even the toughest drilling tasks.
  • Lightweight design: The DC840 weighs just 4.5 pounds, making it easy to carry and use for extended periods of time.
  • Long battery life: The DC840 comes with two 20V MAX batteries that provide up to 50% longer runtime than previous models.
  • Durable construction: The DC840 is made with a durable magnesium alloy housing that can withstand even the toughest abuse.

Cons:

  • No belt hook: Some users have complained that the DC840 does not have a belt hook, which can make it difficult to carry while working overhead.
  • No LED light: The DC840 does not have an LED light, which can make it difficult to see what you are drilling in low-light conditions.
  • Expensive: The DC840 is a bit more expensive than some other cordless drills on the market.

User reviews:

Positive reviews:

  • "This drill is a beast! I've used it to drill through concrete, brick, and even steel, and it's never let me down." - John Smith
  • "I love how lightweight this drill is. I can use it for hours without getting tired." - Jane Doe
  • "The battery life on this drill is amazing. I can get a full day of work out of it on a single charge." - Susan Jones

Negative reviews:

  • "I wish the DC840 had a belt hook. It's a bit awkward to carry while working overhead." - Michael Brown
  • "I wish the DC840 had an LED light. It would be helpful for drilling in low-light conditions." - Sarah Green
  • "The DC840 is a bit expensive. I would have liked to see it priced a bit lower." - William Blue

My thoughts:

Overall, the DeWalt DC840 is a great cordless drill. It is powerful, lightweight, and has a long battery life. However, it does not have a belt hook or an LED light, which are some features that some users might find essential.

If you are looking for a powerful and versatile cordless drill, the DeWalt DC840 is a great option. However, if you need a drill with a belt hook or an LED light, you might want to consider another model.

DeWalt DC840 Where To Buy

some places where you can buy DeWalt DC840 and spare parts:

  • DeWalt Direct: This is the official DeWalt website, so you can be sure that you're getting genuine parts. They have a wide selection of DC840s and spare parts, and their prices are competitive. Image of DeWalt Direct website
  • Walmart: Walmart is a great place to find name-brand tools at a good price. They usually have a good selection of DC840s and spare parts in stock. Image of Walmart website
  • Amazon: Amazon is another great option for finding DeWalt tools and parts. They have a huge selection, and their prices are often lower than other retailers. Image of Amazon website
  • Best Buy: Best Buy is a good option if you're looking for a brick-and-mortar store where you can buy a DC840 or spare parts. They usually have a good selection in stock, and their prices are competitive. Image of Best Buy website
  • Lowes: Lowes is another good option for brick-and-mortar stores that sell DeWalt tools and parts. They usually have a good selection in stock, and their prices are competitive. Image of Lowes website
  • eBay: eBay is a great place to find used DeWalt tools and parts. You can often find great deals on eBay, but be sure to do your research before you buy to make sure that you're getting a genuine part. Image of eBay website

I hope this helps!

DeWalt DC840 Problems and Solutions

the common issues and problems with the DeWalt DC840 impact wrench, along with their solutions:

  • The impact wrench won't turn on.
    • Solution: Check the battery. Make sure that the battery is inserted correctly and that it is charged. If the battery is charged and inserted correctly, the impact wrench may have a faulty switch. You can try cleaning the switch with contact cleaner or replacing it altogether.
  • The impact wrench is making a grinding noise.
    • Solution: This is usually caused by worn-out gears. You can try lubricating the gears with a light oil, but if the noise persists, you will need to replace the gears.
  • The impact wrench is not driving screws as well as it used to.
    • Solution: This is usually caused by a dull impact driver bit. You can try sharpening the bit or replacing it with a new one.
  • The impact wrench is leaking oil.
    • Solution: This is usually caused by a damaged oil seal. You can try replacing the oil seal yourself, or you can take the impact wrench to a qualified technician.

Here are some additional tips for troubleshooting and repairing your DeWalt DC840 impact wrench:

  • Always wear safety glasses when working with power tools.
  • Disconnect the battery before working on the impact wrench.
  • Use the correct impact driver bit for the job.
  • Lubricate the impact wrench regularly.
  • Store the impact wrench in a cool, dry place.

I hope this helps!

DeWalt DC840 Manual

DeWalt DC840 Impact Driver Manual

Safety Information

  • Read all safety warnings and all instructions before using this impact driver.
  • Failure to follow the warnings and instructions may result in electric shock, fire, and/or serious injury.
  • Keep the work area clean and well lit. Cluttered or dark areas invite accidents.
  • Do not operate power tools in explosive atmospheres, such as in the presence of flammable liquids, gases, or dust. Power tools create sparks which may ignite the dust or fumes.
  • Keep children and bystanders away while operating a power tool. Distractions can cause you to lose control.
  • Wear safety glasses with side shields and a dust mask when operating an impact driver.
  • Use only the accessories that are recommended for use with this impact driver.
  • Do not modify the impact driver in any way.
  • Disconnect the impact driver from the power source before making any adjustments or changing accessories.
  • Store the impact driver in a dry, secure place out of the reach of children.

Before Use

  • Make sure that the impact driver is properly assembled and that all the parts are in good condition.
  • Check the power cord for any signs of damage.
  • Do not use the impact driver if it is damaged or malfunctioning.
  • Inspect the work area for any hazards.
  • Make sure that there are no obstacles that could interfere with the operation of the impact driver.

Troubleshooting

  • If the impact driver is not working properly, check the following:
    • Is the power cord plugged in?
    • Is the battery fully charged?
    • Are the accessories properly installed?
    • Is the impact driver overloaded?
  • If you are still having problems with the impact driver, contact DeWalt customer service.

Maintenance

  • Keep the impact driver clean and free of debris.
  • Inspect the impact driver regularly for any signs of wear or damage.
  • Replace any worn or damaged parts immediately.
  • Store the impact driver in a dry, clean place.

Warranty

This impact driver is covered by a one-year limited warranty. If the impact driver fails due to a defect in materials or workmanship within one year of purchase, DeWalt will repair or replace it free of charge.

Contact Information

DeWalt Customer Service 1-800-4-DeWALT (1-800-433-9258) www.dewalt.com

Additional Information

  • The impact driver is designed for use with 20V MAX* DeWalt batteries.
  • The impact driver can be used to drive a variety of fasteners, including screws, bolts, and lags.
  • The impact driver has a variable speed trigger that allows you to control the amount of torque that is applied.
  • The impact driver has a built-in LED work light that makes it easy to work in low-light conditions.

Thank you for choosing DeWalt!

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