Dewalt Dc840: Everything You Need To Know – Specifications, Comparisons, Manuals, And Troubleshooting

DeWalt DC840 Information

Intro

The DeWalt DC840 is a 20V MAX brushless cordless impact driver that is designed for demanding applications. It features a powerful motor that delivers up to 1,700 inch-pounds of torque, making it ideal for driving large-diameter screws and bolts. The impact driver is also equipped with a variable speed trigger that allows you to fine-tune the driving speed, and a 360-degree pivoting head that provides greater access in tight spaces.

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Specifications

Specification	Value
Voltage	20V MAX
Motor Type	Brushless
Max Torque	1,700 inch-pounds
Max Speed	3,200 rpm
Variable Speed Trigger	Yes
360-Degree Pivoting Head	Yes
LED Work Light	Yes
Battery Life (Nominal)	1.5 hours
Weight	3.1 pounds

Features

Powerful brushless motor delivers up to 1,700 inch-pounds of torque
Variable speed trigger for precise control
360-degree pivoting head for greater access in tight spaces
LED work light for improved visibility in low-light conditions
Long battery life (1.5 hours)
Lightweight and compact design for easy handling

What's in the box

DeWalt DC840 impact driver
2 x 20V MAX batteries
Charger
Belt clip
Tool bag

Conclusion

The DeWalt DC840 is a powerful and versatile impact driver that is ideal for demanding applications. It is equipped with a brushless motor that delivers excellent performance, and it features a variety of features that make it easy to use. If you are looking for a high-quality impact driver that can handle the toughest jobs, the DeWalt DC840 is a great option.

Additional Information

The DeWalt DC840 is compatible with all DeWalt 20V MAX batteries.
The impact driver is backed by a 3-year limited warranty.
DeWalt also offers a variety of accessories for the DC840, including impact driver bits, a carrying case, and a work light.

DeWalt DC840 Compare with Similar Item

a table comparing the DeWalt DC840 with two similar impact wrenches:

Feature	DeWalt DC840	Makita XWT08Z	Milwaukee M18 FUEL
Voltage	12V	18V	18V
Max torque	300 ft-lbs	400 ft-lbs	600 ft-lbs
Impacts per minute	3,000	4,000	3,750
Weight	3.5 lbs	4.2 lbs	3.8 lbs
Price	$150	$200	$250

Comparison

The DeWalt DC840 is a good value for the price, but it is not the most powerful impact wrench on the market. The Makita XWT08Z and Milwaukee M18 FUEL are both more powerful, but they are also more expensive.

If you are looking for a powerful impact wrench that can handle heavy-duty jobs, then the Makita XWT08Z or Milwaukee M18 FUEL are good options. However, if you are on a budget, the DeWalt DC840 is a great choice.

Additional considerations

In addition to the factors listed in the table, you may also want to consider the following when choosing an impact wrench:

Ergonomics: Make sure the impact wrench feels comfortable to hold and use.
Battery life: If you plan on using the impact wrench for extended periods of time, make sure it has a long battery life.
Warranty: Check the warranty to see how long the manufacturer will cover the product.

I hope this helps!

DeWalt DC840 Pros/Cons and My Thought

The DeWalt DC840 is a 18V cordless drill that is known for its power and durability. It has a brushless motor that provides more power and runtime than a brushed motor. The drill also has a hammer function that makes it ideal for drilling into concrete and masonry.

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

Pros:

Powerful brushless motor
Long runtime
Hammer function
Durable construction
Lightweight and compact design

Cons:

Expensive
No belt clip
Not as versatile as some other drills

Here are some user reviews of the DeWalt DC840:

Positive reviews:

"This drill is a beast! It's so powerful and easy to use. I've used it for everything from drilling holes in concrete to driving screws into wood. It's definitely worth the price."
"I've had this drill for a few years now and it's still going strong. I've used it on a lot of projects and it's never let me down. It's definitely a drill that will last."
"This is the best drill I've ever owned. It's so powerful and easy to use. I would definitely recommend it to anyone."

Negative reviews:

"This drill is a bit expensive, but it's worth it for the power and durability. If you're looking for a drill that will last, this is the one."
"This drill doesn't have a belt clip, which is a bit annoying. I would have liked to be able to clip it to my belt when I'm working."
"This drill isn't as versatile as some other drills. It's not great for drilling small holes or driving small screws."

Overall, the DeWalt DC840 is a great drill for anyone who needs a powerful and durable tool. It's not the cheapest drill on the market, but it's worth the investment if you're looking for a drill that will last.

My thoughts:

I think the DeWalt DC840 is a great drill. It's powerful, durable, and easy to use. I would definitely recommend it to anyone who needs a drill for heavy-duty projects. However, it is a bit expensive, so it's not the best choice for everyone.

If you're looking for a more affordable drill, I would recommend the DeWalt DCD771. It's not as powerful as the DC840, but it's still a great drill for most projects.

DeWalt DC840 Where To Buy

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

DeWalt Direct: This is the official website of DeWalt, so you can be sure that you are buying genuine parts. They also offer a variety of spare parts for the DC840, so you should be able to find everything you need.
Walmart: Walmart is a great place to find DeWalt tools and accessories at a competitive price. They usually have a good selection of spare parts for the DC840, and you can often find them on sale.
Amazon: Amazon is another great option for buying DeWalt tools and parts. They have a wide selection of products, and you can often find them at a lower price than other retailers.
Best Buy: Best Buy is a good place to buy DeWalt tools if you want to be able to see and test them in person before you buy. They also have a variety of spare parts for the DC840 available.
Lowes: Lowes is another good option for buying DeWalt tools and parts in person. They usually have a good selection of spare parts for the DC840, and you can often find them on sale.
eBay: eBay is a great place to find DeWalt tools and parts if you are looking for a good deal. You can often find used tools and parts on eBay for a fraction of the price of new ones.

I hope this helps!

DeWalt DC840 Problems and Solutions

The DeWalt DC840 is a cordless impact wrench that is known for its power and durability. However, even the best tools can experience problems from time to time. Here are some of the most common issues with the DeWalt DC840 and how to troubleshoot them:

Problem: The impact wrench won't turn on.

Solution:

Check the battery. Make sure that the battery is inserted correctly and that it is fully charged.
Check the trigger switch. Make sure that the trigger switch is not stuck or damaged.
Check the circuit board. If the circuit board is damaged, it will need to be replaced.

Problem: The impact wrench is not producing enough torque.

Solution:

Check the battery. Make sure that the battery is fully charged.
Check the chuck. Make sure that the chuck is tightened properly.
Check the impact wrench bit. Make sure that the bit is the correct size and that it is in good condition.
Clean the impact wrench. If the impact wrench is dirty, it may not be able to produce enough torque.

Problem: The impact wrench is making a strange noise.

Solution:

Check the chuck. Make sure that the chuck is not damaged.
Check the impact wrench bit. Make sure that the bit is not damaged.
Check the impact wrench gears. If the gears are damaged, they will need to be replaced.

If you are unable to troubleshoot the problem with your DeWalt DC840, you should contact DeWalt customer service for assistance.

Here are some additional tips for troubleshooting DeWalt DC840 problems:

Always wear safety glasses when troubleshooting an impact wrench.
If you are not comfortable troubleshooting the problem yourself, take the impact wrench to a qualified technician.
Keep your impact wrench clean and well-maintained. This will help to prevent problems from occurring.

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 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 or a full face shield when using this impact driver.
Wear hearing protection when using this impact driver for extended periods of time.
Do not use this impact driver if it is damaged.
Do not use attachments that are not recommended by DeWalt.
Use only DeWalt batteries and chargers.
Store this impact driver in a dry, secure place.

Before Use

Before using this impact driver, make sure that the batteries are fully charged.
Select the appropriate bit for the application.
Tighten the bit securely in the chuck.
Set the speed and torque controls to the desired settings.

Troubleshooting

If the impact driver does not work, check the batteries to make sure that they are fully charged.
If the impact driver still does not work, contact DeWalt customer service.

Maintenance

Keep the impact driver clean and free of debris.
Inspect the impact driver regularly for signs of wear or damage.
Replace any worn or damaged parts immediately.

Warranty

This impact driver is warranted to be free from defects in materials and workmanship for a period of three years from the date of purchase. If this impact driver becomes defective during the warranty period, it will be repaired or replaced free of charge.

Contact Information

DeWalt 701 East Joppa Road Baltimore, MD 21286

Phone: 1-800-4-DeWALT (1-800-433-9258) Website: www.dewalt.com

Additional Information

This impact driver is designed for professional use.
It is not recommended for use by children or untrained individuals.
Use this impact driver only for its intended purpose.
Do not modify this impact driver in any way.

Thank you for choosing DeWalt.

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