Question about Makita BDF452HW 18V Cordless Lxt Lithium Ion 12" Driver Drill Kit

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Makita BHP452ZW light works but no drill power

Batteries are defiantly working ok and brushes are also fine.

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  • Makita Master
  • 885 Answers

Your most likely problem is the switch (PN 650583-6). When they go bad they will let power go to the LED light but it won't get to the motor. With a multi-meter, check the power going into the switch and coming out to the motor. If 18 volts are getting through to the motor then you may have armature (PN 619198-8) issues.

Posted on Apr 01, 2014

6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

dmftrucker
  • 1922 Answers

SOURCE: My makita drill is weak/ has no power.

did you check the battery under a load condition?as in check the voltage under drill operation,most batteries will check their normal top charge voltage when not being used,this is known as a surface charge,but under load the voltage may severly drop leading to burned or overheated armatures,have it load tested

Posted on Jan 02, 2010

rowdy45176
  • 2176 Answers

SOURCE: Can't get the keyless chuck off cordless Makita 6095D drill.

If this is a newer tool it is probably a Torx drive screw usually a T20. The screw is LH thread and after removing it you will need to put some screws back in tool to remove the chuck. First shift the gear selector to the low setting and the clutch to the drill only. Next get a bent handle allen wrench about the capacity of the chuck install the short end of wrench in chuck and tighten. Put the chuck on a block or wood or a workbench to support is and turn the wrench to about a 30 degree angle in the counterclockwise position. The chuck has standard threads so you want to hit the wrench with a hammer to loosen it. This might take a few tries but it will work. Good luck

Posted on Dec 31, 2008

SOURCE: makita dc1804f charger will not charge new i-mh 1834 18v battery

I think your tryiong to charge NIMH batteries oon a charger designed for Lithium Ion batteries. With all the new style batteries such as NICAD, NIMH and LI-ION, charging becomes difficult. Most chargers pre NIMH and LI-ion, were designed for NICAD's. The best advise, match your batteries with the correct charger

Posted on May 23, 2008

SOURCE: Makita drill 6349D

dont think its http://www.toolbarn.com/product/makita/6349DWDE/

Posted on Oct 05, 2008

  • 165 Answers

SOURCE: Brand new Makita DC18RA charger wont charge the batteries.

Return to store for replacement.

Posted on Feb 27, 2010

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Hi. I have a makita 08070 hammer. when I will start this the power light is work but machine not work


Australia Drill Battery offers a complete and comprehensive product line of high quality MAKITA power tool batteries. Our MAKITA drill batteries are designed to be fully compatible with the original cordless tools. http://www.drill-battery.com.au/batteryshop.php/makita_power-tool-battery.html

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Look inside where the Battery terminals connect.
THey are flat metal springs inside the drills Battery hole.
Make sure the are not compressed down causing them not to touch the battery terminals of the battery.

ALso check the Brushes on the drills motor they may need replacing...

Selvol

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Could be a stuck brush. Take the covers of the brushes and check they are long enough and move easily back & forth.

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My makita 6914D impact drill works fine when it will start. Sometimes when I pull the trigger nothing happens on either forward or reverse. When I change batteries it may or may not work . I checke


It could be your brushes are worn down and not fully contacting the armature. If they are very short and the armature comutator looks burnt, you need part number CB424 to replace your brushes. Most likely your problem is the switch. Sometimes the contacts in the switch get dirty or burnt and if you move the switch just right, a clean contact may be made but usually it won't work. The switch is part number 651939-6. Both are available on sites like www.ereplacementparts.com.

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1 Answer

Drill is not working


first measure of the batterie if its loaden ,only if the brushes are to short replace also anyway the armature and brushes BOTH . it is not good to switch only the carbonbrushes because of a marketing technical design concept because of the heat dissipation that playing tricks insite the armature and it is cheap made by Johnson
sometimes the half value compared to other brandnames.

Armatures are new designed in a short time

23465970-2oroqqetjko0hjqmfukebeah-4-0.jpgleft the armature of the old but same cdd 18 milwaukee no problems you can change only the brushes and its working again right the same modificated armature marketing technical a new design of this JOHNSON Armature (Johnson is also used in Panasonic powertools bv EY7441 ) it has much more force in the same armature but the heat dissipation plays tricks and if the brushes are to short replace anytime BOTH (the brushes and the armature look at the difference of the turns of the coil front right look the later design more and thiny wire on it more power force but a bad heat dissipation in about 2 or 3 years the brushes are on its end take by heavy work a more powerful tool its better longlasting then this machines Makita has oft a better armature but there are also posibillities in some tools.

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Drill just stopped working it was working fine on saturday went to use it on sunday and it was dead


Could be the battery(s) went dead, possible but usually two batteries won't go at the same time. If you're sure the batteries are OK, check the 'headlight' when you squeeze the trigger. If it isn't coming on it's the battery or the switch may have burned out. Next, check the brushes. They're under the two caps at the back of the case. The carbon should be about 3/8 to 1/4 inch long and the springs should be in one piece and strong enough to push the brushes down on the armature. Next, put a drive bit in the chuck and check that the armature turns freely. There will be some resistance because the transmission is geared from the motor to the chuck but it should turn smoothly.

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If the motor is working good then check the hammer and anvil to see if they are rounded over. A weak spring under the hammer can also add to this problem. Also check the spindle and the two steel balls that hold the hammer to the spindle. Sometimes the spindle will become chipped on the edge of the grooves and let the steel balls get out of alignment in relation to the hammer.
If the motor itself is loosing power with full batteries then you will need to check the brushes and the armature for damage. If the brushes are chipped or broken you should replace both the brushes and armature. Any questions please post back.

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