Medium
15-30 minutes
This is a genuine replacement part that has been sourced from the original manufacturer to be used with electric drills from DeWalt, Black and Decker, and Porter Cable. The metal gear is used to link the armature assembly and the chuck's spindle shaft. This item is priced as a single item.
Gear N437049
OEM part for: DeWALT, Black and Decker, Porter Cable
Part Number: N437049
$9.68
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Compatibility
This part will fit the following 58 machines
DeWALT
DW100-220 Type 1 2500 RPM Electric Drill View Diagrams & Manuals
DW100 Type 2 Electric Drill View Diagrams & Manuals
DW101 Type 1 120V 4.5A VSR Electric Drill View Diagrams & Manuals
DW101 Type 2 120V 4.5A VSR Electric Drill View Diagrams & Manuals
D21002 Type 1 3/8 Electric Drill View Diagrams & Manuals
D21002 Type 2 3/8 Electric Drill View Diagrams & Manuals
D21008K Type 1 3/8 Electric Drill View Diagrams & Manuals
D21008G Type 1 3/8 Electric Drill View Diagrams & Manuals
D21009 Type 1 3/8 Electric Drill View Diagrams & Manuals
DW106L Type 3 Drill View Diagrams & Manuals
D21007 Type 1 VSR Drill View Diagrams & Manuals
D21007 Type 2 VSR Drill View Diagrams & Manuals
DWD112 3/8 Drill View Diagrams & Manuals
DWD115 3/8 Drill View Diagrams & Manuals
DWD110 3/8 Drill View Diagrams & Manuals
D21002 Type 3 3/8" Electric Drill View Diagrams & Manuals
D21007 Type 3 VSR Drill View Diagrams & Manuals
D21008 Type 1 Electric Drill View Diagrams & Manuals
D21008 Type 2 Electric Drill View Diagrams & Manuals
D21009 Type 2 VSR Drill View Diagrams & Manuals
DWD110K (Type 1) 3/8" 10mm VSR Pistol Grip Drill View Diagrams & Manuals
DWD115K (Type 1) 3/8" 10mm VSR Mid-handle Drill View Diagrams & Manuals
D21008KG (Type 1) 3/8 Drill View Diagrams & Manuals
D21009K (Type 1) 3/8 Drill View Diagrams & Manuals
DW100K (Type 2) 3/8 Corded Drill View Diagrams & Manuals
D21002-AR (Type 1) Drill Power Tool View Diagrams & Manuals
D21002-B2 (Type 1) Drill Power Tool View Diagrams & Manuals
D21002-BR (Type 3) Drill Power Tool View Diagrams & Manuals
DW106 (Type 3) 3/8in Drill Power Tool View Diagrams & Manuals
DWD110K (Type 10) 3/8 Drill Power Tool View Diagrams & Manuals
DWD110K (Type 2) 3/8 Drill Power Tool View Diagrams & Manuals
DWD112-AR (Type 1) Drill Power Tool View Diagrams & Manuals
DWD112-AR (Type 2) Drill Power Tool View Diagrams & Manuals
DWD112 (Type 1) Drill Power Tool View Diagrams & Manuals
DWD112 (Type 10) Drill Power Tool View Diagrams & Manuals
DWD112 (Type 2) Drill Power Tool View Diagrams & Manuals
DWD115K (Type 2) 3/8 Drill Power Tool View Diagrams & Manuals
DW107-AR (Type 2) 3/8 Rotary Drill Power Tool View Diagrams & Manuals
DW107-AR (Type 3) 3/8 Rotary Drill Power Tool View Diagrams & Manuals
DW107-B2 (Type 2) 3/8 Rotary Drill Power Tool View Diagrams & Manuals
DW107-B2 (Type 3) 3/8 Rotary Drill Power Tool View Diagrams & Manuals
DW107-B3 (Type 2) 3/8 Rotary Drill Power Tool View Diagrams & Manuals
DW107-B3 (Type 3) 3/8 Rotary Drill Power Tool View Diagrams & Manuals
DW107-BR (Type 2) 3/8 Rotary Drill Power Tool View Diagrams & Manuals
DW107-BR (Type 3) 3/8 Rotary Drill Power Tool View Diagrams & Manuals
Black and Decker
1166 Type 1 3/8 Variable Speed Reversible Drill View Diagrams & Manuals
1166 Type 2 3/8 Variable Speed Reversible Drill View Diagrams & Manuals
7196 Type 1 3/8 Variable Speed Reversible Drill View Diagrams & Manuals
QP250 Type 1 3/8 Drill View Diagrams & Manuals
QP250K (Type 1) 3/8 Electric Drill View Diagrams & Manuals
1166-36 (Type 100) Vsr. Prof. Drill View Diagrams & Manuals
1166-36 (Type 101) Vsr. Prof. Drill View Diagrams & Manuals
1166-BDK (Type 1) 3/8in Vsr Drill View Diagrams & Manuals
1166-BDK (Type 2) 3/8in Vsr Drill View Diagrams & Manuals
1166-220 (Type 101) 220v 3/8 Drill View Diagrams & Manuals
D21002-B2 (Type 1) 3/8 Vsr Drill View Diagrams & Manuals
7196-BDK (Type 1) 3/8 Vsr Drill View Diagrams & Manuals
Porter Cable
PC600D Type 1 3/8 Electric Drill View Diagrams & Manuals
Show More Compatible Models
This item works with the following types of products:
- Drill Parts
- Electric Drill Parts
This part replaces obsolete part #: 389216-00
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April 9, 2022
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February 7, 2022
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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.
missing teeth on the main gear
Daniel - January 21, 2016
👍 5 of 6 people found this instruction helpful
Tool Type
Electric Drill
Difficulty
Medium
Time
30-60 minutes
Tools Used
Screwdriver, gear puller butune tourch
Parts Used
Split drill case in half by removing the screws, then remove the gear and bearing shaft and keyless chuck. Place shaft in a vice add heat to the bad gear attach a gear puller and remove the gear and first bearing. I add some lube to the shaft and placed the new gear on the shaft and used a deep well socket and tapped the new in place then added the bearing and used a deep well socket then tapped it in place. Reinstalled the shaft back into the drill and then put the drill back together. PS do not forget to add more grease on the gears.
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Motor ran but drill chuck wouldn't turn under load
Bob - September 23, 2018
👍 2 of 2 people found this instruction helpful
Tool Type
Electric Drill
Difficulty
Medium
Time
30-60 minutes
Tools Used
Screwdriver, Vise, hammer,punch, and sockets
Parts Used
1 Removed drill chuck
2 Separated the case halves
3 Removed the damage gear and output shaft assembly
4 Removed the gear and one bearing by putting the shaft in the vise and using a punch to separate them [ make sure you notice which way the gear hub faces]
5 Installed the new gear using a socket to drive it on then the bearing
6 Reinstall the output shaft assembly
7 Reinstalled the case halves
8 Reinstall the drill chuck
9 Test the drill, worked OK
2 Separated the case halves
3 Removed the damage gear and output shaft assembly
4 Removed the gear and one bearing by putting the shaft in the vise and using a punch to separate them [ make sure you notice which way the gear hub faces]
5 Installed the new gear using a socket to drive it on then the bearing
6 Reinstall the output shaft assembly
7 Reinstalled the case halves
8 Reinstall the drill chuck
9 Test the drill, worked OK
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Gear stripped in the DeWalt electric drill.
Lynn - November 1, 2017
👍 2 of 2 people found this instruction helpful
Tool Type
Electric Drill
Difficulty
Medium
Time
15-30 minutes
Tools Used
, Gear puller
Parts Used
1. Opened the drill and removed the shaft with the bearing and gear.
2. Heated the gear with a torch and then, used gear puller to remove the bearing first. Then, pulled the stripped gear.
3. Lubricated the shaft and gear and used a deep socket to hammer the gear and the bearing back onto the shaft.
4. Works great!
2. Heated the gear with a torch and then, used gear puller to remove the bearing first. Then, pulled the stripped gear.
3. Lubricated the shaft and gear and used a deep socket to hammer the gear and the bearing back onto the shaft.
4. Works great!
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bad gear and chuck
Donald - March 1, 2019
👍 1 of 1 people found this instruction helpful
Tool Type
Electric Drill
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
Screwdriver, Pliers, vise
removed gear, bearings, shaft and chuck and replaced with new parts
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Thanks for voting and helping fellow customers!
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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.
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