Makita drill DHR202 losing power. How to replace the armature, brushes, holder and caps.

[@stuzbots-shed]

What I really like about this channel-apart from the wealth of knowledge shared-is how Dean nearly almost prices up how much everything costs. So, if ever faced with one of these broken tools ourselves, we've got an idea how much it's going to cost us to fix it and whether it's worth it or not.

[@darylrumham1714]

Been following your videos from the start, love all the content you make, well done Dean.

[@JerryMraz.]

Just might be my new favorite channel. Knowledge, insight, and economy of movement. Thanks

[@deandohertygreaser]

Wow, thanks!

[@georgedavall9449]

Dean Doherty !!!! Skillset on a whole nother level!

[@JohnJohn-gn2ey]

Like that Makita, my Google Chrome regularly grinds down to a spinning globe so I swapped over to Firefox. For some reason, I haven't been seeing your videoes pop up recently Dean but there you were. Very reassuring to see a craftsman at work again

[@mickcoulson6188]

Im amazed at your knowledge of power tools,no job too big or too small,top channel mate

[@stevejagger8602]

Good machine for light work, like drilling fixings into walls outside where a trailing cable would be dangerous. I never had a problem with this well designed Makita tool.

[@cheegebvvbvvbbhggf8638]

I just want to say I love your videos so much😊

[@deandohertygreaser]

Thank you, that means a lot

[@cheegebvvbvvbbhggf8638]

​@@deandohertygreaserno worries mate I always watch your videos have a great day keep up with the good work😊😊

[@Catstorm99]

Ah little spider making a run for it. Top left at 1:34

[@a_wild_stevo]

evicted 🤣

[@georgedavall9449]

Dayuumm, youre sharp Son! I wonder if he made it?

[@Welltravelled-ib4um]

Love the way you explain and price items up as you go I’ve just subscribed 👌

[@connahjones8178]

I needed to do this but the switch was dying because the armature was bad, i replaced the armature, switch, brushes and piston o rings. 2013 machine going strong, well worth it

[@AnthonySmith-hr2kp]

Nice job Dean. Lookin forward to the next video

[@tomthompson7400]

another win , well done.

[@memofrf]

Thank you for your work.

[@michaelflynn6178]

A cheap repair Dean Thanks

[@Surfingaliens65]

The road less travelled is the discussion around the types of 18650 batteries used in power packs. Murata Sony VTC-D 18650 is rated at 35Amps continuous discharge. Sony VTC6 is rated at 15Amps continuous discharge. The old reliable Samsung 25R is rated at 20Amps. Battery packs are wired in series meaning only the volts increase not the amperage and this is why it is important to know the Amp rating. Lower amp batteries being pushed to 30Amps causes the batteries to overheat. That is bad on a number of levels. Next time you disantle a power pack, unwrap a cell. All the info is stamped on the battery.

[@deandohertygreaser]

Good to know

[@alouisschafer7212]

The Makita 18V pack is a parallel series configuration they have two cells in parallel to increase capacity and amperage. The tiny 1,5 and 2 ah packs are single cell though, everything bigger is double cell. Makita uses different cells but I know for a fact the most common BL1840B uses Sony Murata cells with 20 amp or 22 amp discharge current. So 40 amps discharge at 18V which a fully charge battery will be able to sustain at that load and we have 720W of power delivered to the tool. Thats why brushed tools burn out, these lithium batterys power through anything. Makitas strongest battery the BL4080 40V 8 ah delivers 2100W! They use Murata VTC6A 21700 size cells and again two in parallel 20 amps each and 10 of those in a series string for 40V. Strongest batteries are the Greenworks Ego+ 50V, the 6 ah has a peak of 4,5 kilowatts.

[@Surfingaliens65]

@alouisschafer7212 That is good to know. Murata produces exceptional batteries. Battery information should be included on the pack. The cells are the most important component, and it is a shame that important information has been excluded.

[@leonardpaciora5039]

Thanks Dean!!!

[@PeterSelie-wl6qg]

Dean, what is the function of that black piece around the leads of the brushholder? Is that Some kind of suppression? I see that in a lot of powertools.

[@mstrwul1]

Thanks for the advice on what drill i should buy. You said get a makita ddf484z i looked at the option on metal gears so i opted for the makita ddf489z. Cheers again 👍 What sliding mitre saw would you recommend. I am looking at a makita LS1219L. Great vidz again Dean.

[@deandohertygreaser]

For a 12inch probably that makita, the dewalt is trouble.

[@abc_123_handle]

How can you rapidly detect if it is burned out brushes or worn out bearings ?

[@user-rq7gy1xf3m]

Heck Dean, you could strip and rebuild these things in your sleep. Cracking channel

[@JudeC5MSG]

Can you repair stick welder machines?

[@jonashermansson2519]

I must say that it seems more well built than newer models like DHR182. Rubber seal for trigger, anti vibration for battery. I have a suggestion if you could tell were the country of origin are on the machines. I’m just curious if the quality differs and how many models are from China and from other countries like in the case of Makita made in Japan.

[@octymocty132]

You take requests? Ive a 240v makita sds taht need looking at

[@Masterk747]

Genuine question: why would the owner send it for repair, if the repaircost is nearly the same price as buying a new one? I looked online and a new makita dhr202z 18v costs €150 (discounted from 200) and a dhr242z 18v sds-plus €217,50 (I dont own any machine myself, so might not know the differences. I also commented at around 5mins in the video)

[@deandohertygreaser]

Because the repair is still cheaper. The repair cost 82 euro. A new body best price is 150. But noy everyone buys online where it's cheapest. Local shops are generally going to be more expensive probably around d 180-200. But like here, you can drop it back if you have any problems. Like this guy has.

[@Masterk747]

@@deandohertygreaser thank you for the elaboration!❤️

[@Kliker-wc3ut]

Hello, I have a dewalt drill Dcd710 brushed 12v machine. I bought a brand new original switch and it doesnt work, the output voltage is 0.5v and the switch heats up as soon as i start it, it wont let 12v trough no way. It blew the diode on the bottom, I can replace it no problem but it the switch doesnt work and my seller doesnt want to give money back, can somebody tell me how to fix it, i Have basic electronics knowledge

[@walterbwd]

😮

[@darylhudson777]

I don't know what type of plastic that they make those brush holders out of but you'd think that knowing about this problem they'd come up with a high heat version of plastic that would not melt because it's giving them a bad reputation every time a customer has a problem with something and it's not very old they're going to not want to buy that product anymore

[@alouisschafer7212]

If the brush holder actually melts the motor is gone anyways these don't melt unless the motor is overheated.

[@Surmoka]

Even a Makita has an awful chuck like this so that the drill bit wobbles like crazy :(

[@MrAmorti]

Or the bit could be bent? It's not likely Dean would take his best one for testing hammer drills against a metal bench.

[@absurdengineering]

It’s a chuck from 2016. When it was brand new it was fairly tight. That one saw some use and likely abuse.

[@deandohertygreaser]

The bit itself is bent. I use it as a steel chisel also

[@Kliker-wc3ut]

I hate bent warped chucks, it even happends on brand new premium tools like milwauke etc

[@darylhudson777]

That unit is 8 years old from what I heard you say 2016 and now its 2024 that's $10.00 a year at $80 total which is not a bad investment at all

[@darylhudson777]

You would think the higher voltage units 36 volts and up would draw less amps than the 12/18-20 volt units

[@alouisschafer7212]

They don't because the tools are more powerful and all brushless 😅. But yes at the same power output they draw half the current but the tools are more powerful being 40v and people want just that. Makitas 2x18V and 40V tools are actually surprisingly identical in power though I think some even use the same internals.