Part Location Diagram of CB51 Makita Carbon Brush Set
See part 45 in the diagram
( Grid squares measure 1x1 inch )

Carbon Brush Set CB51

Manufactured by:
Makita
ERP Number:
ERP10156667
Part Number:
CB51
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Easy 

Less than 15 mins 

(10 rated repairs) ?

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Product Description

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Genuine Makita replacement part rnSet of 2 Carbon Brushes with wire lead and brush spring attached.rnrn • Worn brushes are often the cause of a poorly running motor • Replacing brushes can fix an intermittent motor • New brushes can restore a motor's electric braking Carbon motor brushes are one of the most commonly replaced power tool components. • Because carbon brushes are wear items, meaning that through friction and use they will gradually wear away, they will eventually require replacement. • Worn brushes are common causes of intermittent motor function, reduced electric braking, and reduced motor power. • A worn out brush will often be worn down near the wire lead and may be cracked, pitted, or burned. • When replacing carbon brushes, be sure to also inspect your armature for burns, cracks, or other damage which indicates a larger motor problem.

Troubleshooting

This part works with the following brands:
  • Makita
This part works with the following products:
  • Drill
Part# CB51 replaces these:
  • 181021-2
  • CB-51

Customer Part Reviews

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Average Rating (out of 5):
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(6 Reviews)
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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.

Easy 

Less than 15 mins 

(10 rated repairs) ?
  • 1
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Sorry, we couldn't find any existing installation instruction that matched.

Drill stopped turning on when power was applied.

Merrick from Magee, Mississippi

4 of 4 people found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
Less than 15 mins
Tools:
Pliers, Screw drivers
Parts Used:
CB51
First I checked power to the trigger switch, which was good, second I pulled one of the brushes and saw where they were almost completely gone. On this drill you just remove the brush caps with a flat head screwdriver, then reach in and pull out the brush retainer with needle nose pliers, put the new brush in, then screw the cap plug back in.
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Drill arched at motor brush area, stopped operating under load. One of brushes was pitted vice smooth. Marita 1/2 inch drill is 20 years old.

Harry from Chincoteague Island, Virginia

1 person found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
Less than 15 mins
Tools:
Screw drivers
Parts Used:
CB51
Removed brushes with screw driver. Went online, looked up Drill model, ordered brush set. Parts arrived in 4 days. Installed new brushes. Tested drill. Works perfectly. This is a very heavy duty drill, which I use for drilling concrete, mixing paint, mud, and mortar in small quantities.
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Drill Refurbishment - Drill would not run due to motor brushes worn and stuck due to sand dust accumulation.

Michael from Fort Shaw, Montana

0 of 1 people found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
15 - 30 mins
Tools:
Screw drivers
Parts Used:
CB51, 763420-6
Removed old motor brushes using screwdriver and pick.
Checked and cleaned commutator.
Reassembled drill and installed new motor brushes.
Drill now operates normally.
Replaced missing onboard chuck key.
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Excessive sparks.

Michael from Big Timber, Montana

0 of 1 people found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
Less than 15 mins
Tools:
Pliers, Screw drivers
Parts Used:
CB51, 643550-8
I removed the brush caps and pulled the brushes out with needle nose pliers, inserted the new brushes and brush caps. My old drill works like new now.
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I only received half of the handle so I can\'t complete my repair

Kenneth from Salisbury, North Carolina

0 of 1 people found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
Less than 15 mins
Tools:
Screw drivers
Parts Used:
CB51, 183109-4
Removed carbon brush caps
Removed old brushes
Inserted new brushes
Reinstalled brush caps
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Needed all parts ordered for maintenance

Kevin from Vinita, Oklahoma

0 of 1 people found this instruction helpful.
Difficulty Level:
A Bit Difficult
Total Repair Time:
30 - 60 mins
Tools:
Pliers, Screw drivers
Parts Used:
CB51, 763420-6, 682502-4
Removed handle cover to replace cord guard and reattached cord to switch the replaced both brushes
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Motor arcing

dean from las vegas, Nevada

0 of 1 people found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
Less than 15 mins
Tools:
Screw drivers
Parts Used:
CB51
Removed the brush caps
Removed the worn down brushes
Installed the new brushes
Screwed the brush caps back on
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Brushes burned up

Edward from SANFORD, North Carolina

0 of 1 people found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
Less than 15 mins
Tools:
Screw drivers
Parts Used:
CB51
Removed the brush caps, removed the old worn brushes, installed the new brushes, Installed the brush caps
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Excessive sparks from armature - drill quit completely

Dale from Riverside, Missouri

0 of 1 people found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
Less than 15 mins
Tools:
Screw drivers
Parts Used:
CB51
Took drill apart polished armature and reassembled with new brushes
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Worn brushes and partially broken handle

Jay from Oceanside, California

0 of 1 people found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
15 - 30 mins
Tools:
Pliers, Screw drivers
Parts Used:
CB51, 911248-8, 911153-9, 183110-9
No special skills needed, simply remove all applicable screws that secure the broken handle to the drill housing, order missing screws and using them to assemble the handle. Remove the brush caps from the tool. then remove the worn brushes. Install the new brushes, then replace the brush caps.
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  • 1

Model Cross Reference

This part works with the following models:
ERP Number: ERP10156667
Manufacturer Part Number: CB51
Brand Model Number Description
Makita 3701 Trimmer - Grass Trimmer
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Makita 6013BR Electric Drill - Drill
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Makita 63004 Hammer - Rotary Hammer
Makita 8419B Drill - Drill
Makita JR3000 Saw - Saw