Easy
15-30 minutes
This is an authentic replacement part manufactured for use with DeWalt compact drill/drivers. The motor and mount is a complete replacement part used to drive the transmission. The motor is sold as a complete replacement part, please see model diagram for associative parts.
Motor And Mount Assembly N279939
OEM part for: DeWALT
Part Number: N279939
$41.30
In Stock
Ships within 1 business day 
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Frequently Purchased Together ?
Compatibility
This part will fit the following 3 machines
DeWALT
DCD771C2 (Type 1) 20V Compact Drill Driver Kit View Diagrams & Manuals
DCD771 (Type 1) 20V Max Cordless Compact Drill/Driver View Diagrams & Manuals
DCD771C2 (Type 2) 20v Drill/Driver Power Tool View Diagrams & Manuals
This item works with the following types of products:
- Drill Parts
- Cordless Drill Parts
Customer Part Reviews ?
Average Rating (out of 5):
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11
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Awesome supplier!
The part was a perfect fit and the price was great! I will order from this company again.
Guest -
May 23, 2023
Verified Purchase
Easy Repair
My Dewalt drill smoked up one day, its over 5 years old and used call the time. Replacemt cost was over $175 plus tax, purchased this motor for under $40 including tax and shipping. Total repair took about an hour, bacis tools plus a solder gun, works great now and saved me money !!!
Greg -
May 16, 2023
Verified Purchase
Installed
Works very good,easy installation, arrived safely and on time. Was the right product
Guest -
September 13, 2022
Verified Purchase
Drill motor
Thank you for making this repair fast and easy.
Guest -
August 10, 2021
Verified Purchase
No hassle
Same as original part. Now I can keep the drill and driver set together with compatible batteries
philip -
May 4, 2021
Verified Purchase
Exact it, works great
Was a fairly simple solder in, drill works great now. Quick delivery too!
Guest -
December 7, 2020
Verified Purchase
Great condition
Motor was in great condition. Easy to install. Drill works great!
Guest -
November 25, 2020
Verified Purchase
DeWalt Drill Replacement Motor
Part received was as described, Fast Shipping, Will definitely purchase parts from again. Thank you!
Guest -
May 26, 2020
Verified Purchase
thanks for help
my drill type 2 was not listed for motor replacement number. An email to you was quickly answered and I was able to order the part I needed. Thanks for your assistance.
Guest -
January 14, 2020
Verified Purchase
worked great
just what I was looking for, my Drill works like new again
Bob -
November 18, 2019
Verified Purchase
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Verified Purchase
eReplacementParts Team
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Questions & Answers ?
Our customer Service team is at the ready daily to answer your part and product questions.
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We have a dedicated staff with decades of collective experience in helping customers just like you purchase parts to repair their products.
Does this fit my product?Questions & Answers for Motor And Mount Assembly
I need a motor for Dewalt DCD771 type 2, my motor is "N218313". What do I need? Thank you.
Bob
for model number DCD771 Type 2
asked on 2023-03-28
Hello Bob, Thank you for your inquiry. Researching the model number that you have provided, we show the compatible motor as part# N279939. We hope this helps.
eReplacementParts Team March 28, 2023
I need a motor, mine is N210996. Which is compatible? Thank you.
Adam
for model number DCD771 type 2
asked on 2023-03-07
Hello Adam, We are glad you asked! Yes, the Motor And Mount Assembly N279939 you had chosen is compatible with your model. We are pleased to have been able to help.
eReplacementParts Team March 07, 2023
Please inform me the correct replacement motor number and cost for my DCD 777 cordless Dewalt drill.
Mark J.
for model number DCD 777
asked on 2022-10-15
Hello Mark, thank you for your question. No, this part is make for models DCD771, The motor for your model DCD777 is part N472974. We hope this helps.
eReplacementParts Team October 15, 2022
I got this drill and do not work good I fully charge the battery and it is very slow is like don't have any power can u explain me why, if it is the battery,charger or the drill motor
Jaime
for model number Dc759
asked on 2022-06-14
Hi Jaime,
Thank you for your question. If the battery was recently charged and the drill is running slowly your motor may have a defective trigger, worn brushes, or the battery may not be charging properly. If the battery is not charging properly you will need to check the battery and the charger to if they are functioning correctly. Once you have determined the part you need, please feel free to call customer service. We are open 7 days a week and anyone will be happy to assist you. We look forward to hearing from you!
eReplacementParts Team June 14, 2022
Customer Repair Instructions ?
All our customer repair instructions are solicited directly from other customers just like you who have purchased and replaced this exact part.
Burnt motor
James - February 11, 2016
👍 10 of 10 people found this instruction helpful
Tool Type
Cordless Drill
Difficulty
Easy
Time
15-30 minutes
Tools Used
Screwdriver, Soldering station
Parts Used
Removed the outer housing. Separated the motor from the gears. With a soldering station heated solder on leads on motor,and simply pulled wires out. Soldered leads to new motor, reassembled. . When you remove the motor from the gearbox, be sure that the chuck end is facing down. If you don't, the gears will fall out.
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Motor burnt out
Steven - December 14, 2016
👍 7 of 7 people found this instruction helpful
Tool Type
Cordless Drill
Difficulty
Medium
Time
30-60 minutes
Tools Used
Screwdriver, Torx bit, soldering gun
Parts Used
Removed the screws from the housing
Carefully remove the motor from the gear assembly
Used a soldering gun to remove the wire leads
Soldered the wires to the new motor
Placed the motor in the housing and into the gear assembly
Made sure all of the parts were all lined up
Screwed the housings back together
Carefully remove the motor from the gear assembly
Used a soldering gun to remove the wire leads
Soldered the wires to the new motor
Placed the motor in the housing and into the gear assembly
Made sure all of the parts were all lined up
Screwed the housings back together
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Cordless drill not working. drill was not functioning.
mike - July 20, 2018
👍 3 of 3 people found this instruction helpful
Tool Type
Drill
Difficulty
Medium
Time
15-30 minutes
Tools Used
Screwdriver, Soldering iron
Parts Used
Removed case from drill. Had voltage going to the motor but motor not rotating. Replaced motor assembly by removing wires to motor(solder iron). Soldered wires on new motor and reassembled unit.The drill is functioning as it should.Heat shrink tubing supplied with new part.
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Motor and transmission broke
Prentice - September 17, 2018
👍 1 of 1 people found this instruction helpful
Tool Type
Cordless Drill
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
Screwdriver, Soldering iron
Split case replaced motor and transmission soldered wires and reassembled
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Motor burnt up.
patrick - March 12, 2017
👍 1 of 1 people found this instruction helpful
Tool Type
Cordless Drill
Difficulty
Easy
Time
15-30 minutes
Tools Used
Screwdriver, Wrench Set, Nutdriver
Parts Used
Replaced the motor.
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Motor got too hot and locked up
Joe - December 12, 2022
Tool Type
Cordless Drill
Difficulty
Easy
Time
15-30 minutes
Tools Used
Socket set, Soldering iron
Parts Used
Removed the T15 screws and split the drill in half. Removed old motor and replaced with new motor. Put the two halves back together and it works like a new one!
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burned out motor
mark - August 10, 2022
Tool Type
Cordless Drill
Difficulty
Easy
Time
30-60 minutes
Tools Used
Screwdriver, soldering iron
Parts Used
took the screws out unscrewed the motor re soldered the wires lined op all the parts and put the two halves back together put in the screws put in a battery and it worked fine
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Motor went to crap after 15 years
Charles - October 17, 2021
Tool Type
Cordless Drill
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
Screwdriver
Parts Used
Took it apart waited on new part installed new part
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The motor was burned up.
Ray - December 21, 2020
Tool Type
Drill
Difficulty
Medium
Time
15-30 minutes
Tools Used
Screwdriver, Pliers, Flashlight
Parts Used
I took the dewalt drill apart and found out the motor was shut.
I ordered the part from replacement. Com. It came in pretty fast. Great job.
I replaced the motor to the drill and all the other parts needed.
It was not hard with this drill.
Thnks to replacement.com.
I ordered the part from replacement. Com. It came in pretty fast. Great job.
I replaced the motor to the drill and all the other parts needed.
It was not hard with this drill.
Thnks to replacement.com.
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Sparks from cordless drill and smoke with bad small (melted plastic)
Dmitiry - May 14, 2020
Tool Type
Cordless Drill
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
, Torx set, iron soldering gun
Parts Used
1. Removed battery from tool.
2. Removed all torx screws on cover.
3. Removed cover.
4. Desolder the power wire from motor (red for positive and black for negative).
5. Gently remove motor.
6. Put the new motor.
7. Soldered power wire (red to red, black to black).
8. Put all together.
2. Removed all torx screws on cover.
3. Removed cover.
4. Desolder the power wire from motor (red for positive and black for negative).
5. Gently remove motor.
6. Put the new motor.
7. Soldered power wire (red to red, black to black).
8. Put all together.
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Our product descriptions are a combination of data sourced directly from the manufacturers who made your product as well as content researched and curated by our content & customer service teams. This content is edited and reviewed internally before being made public to customers.
Our customer service team are at the ready daily to answer your part and product questions. We have a dedicated staff with decades of collective experience in helping customers just like you purchase parts to repair their products.
All our part reviews are solicited directly from other customers who have purchased this exact part. While we moderate these reviews for profanity, offensive language or personally identifiable information, these reviews are posted exactly as submitted and no alterations are made by our team.
All our customer repair instructions are solicited directly from other customers just like you who have purchased and replaced this exact part. While we moderate these reviews for profanity, offensive language or personally identifiable information, these reviews are posted exactly as submitted and no alterations are made by our team.
Based on data from past customer purchasing behaviors, these parts are most commonly purchased together along with the part you are viewing. These parts may be necessary or helpful to replace to complete your current repair.
All our installation videos are created and produced in collaboration with our in-house repair technician, Mark Sodja, who has helped millions of eReplacementParts customers over the last 13 years repair their products. Mark has years of experience in selling and repairing both commercial and residential products with a specialty in gas-powered equipment.
This data is collected from customers who submitted a repair instruction after replacing this exact part. Customers can rate how easy the repair was to complete and how long it took. We aggregate this data to provide a repair rating that allows customers to quickly determine the difficulty and time needed to perform their own repair.
