Question about Makita Tools 18V 1/2" Lxt Lithium - Ion Hammer Driver - Drill Kit - BHP451

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Grinding noise While I was using my 6 month old 18v makita drill it started to smoke very alot. It reaked. Now it makes a grinding noise when I run it.

Posted by Rick MOyer on

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Possible burnt out in the brush holder assy,checked the motor

Posted on Jun 03, 2008

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I have a makita 6391D cordless drill with 18v ni-cd 1.3ah batteries, just had one battery and charger stolen so have to buy replacements is there any way i can convert it now to lithium batteries if

Replacement MAKITA 6391D battery pack 100% compatible with the original 6391D battery, high quality, wholesale price.

http://www.drillbattery.com.au/buybattery.php/makita_6391D_power+tool+battery.html

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Jul 06, 2012 • Drills
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Hi have a makita bhp 452 drill under a month old changed the battery twice still comes up with red green light?

take it back for warranty replacement, I would also take the charger to ensure it is not at fault.
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Drill stopped during a day of usage. Motor was getting hot and just started to smoke. I stopped using the drill so it could cool. Two hours later, it makes a buzzing noise, but the drill will not spin. ...

the heat has seized the motor or plastic gears im leaning more towards the motor
disassemble the drill and take a look all the parts pretty much stay in place see if
you can turn the motor by hand if it wont turn use some 3n1 oil on each end of the
motor that shooed do the trick

hope this helps you
good luck
bob
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Hi my makita 18v impact driver seems to be getting alot weaker throughout the years, still works but no enough torqe

Lithium batteries have a limited lifespan, typically 3 or 4 years, and their capacity between charges decreases over the years.
To extend the lifetime of a battery it should be run completely flat after every few charges rather than topping it up. New batteries need to be charged several times and run flat under normal use before they gain their full capacity.
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Hi i have a makita charger that flashes red and green indicating battery is no good but the batteries are perfect they charge fine on other charges an i even tried it with a brand new battery it starts...

there is a problem with the charger and given the age I would take it to an authorized dealer and get a replacement. If you give me your general area I will try and locate one close to you. Please before voting if you need more assistance let me know. Thank you
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I used my makita 18v 1/2" cordless drill then charged it and put it away. When I tried to use it again a month later there was no power. I tried to recharge the battery but red light would only stay on...

WOW! Count yourself very lucky. Most batteries don't last half that time. The newer battery probably has a lower amp hour rating than the first one. When replacing the battery (and you must replace it) look for the one with the HIGHEST amp hours - which is usually written on the battery or packaging. You can also ask at a Batteries Plus store if they can re-build the original battery for you- since the unit is so old, and Makita might not make replacements for your drill. You could rebuild the battery yourself,it is only 12 AA or C batteries wired together, but ni-cads can be dangerous when soldering and can explode if you slip up. Best bet is to get a new or rebuilt battery.
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Makita 2071 Smoking, probably overheated but still working

When an AC motor is stalled, very high currents pass through the motor windings and melt the insulation on the windings; the smoke was the result of the motor winding insulation being melted. This causes a reduction in motor torque and premature failure.

You should suggest that your neighbor buy you a new drill and he keep the one that he ruined.
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How do i re-assemble a makita 18v cordless drill

check out ereplacementparts.com and type in your model eg bhp451 they should have an exploded diagram.
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18V xrp Drill Help

The problem could be the brushes and if so it is be quit easy to replace them by pulling the drill apart and slipping the old ones out of there sleeves on the armature and slipping the new ones back in there place . you can buy these brushes at any good tool shop . all you will need is the model number of the drill which you can locate on the side case of your drill . hope this helps.
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