How to fix a makita drill DHP484 stuck on hammer mode. Full rebuild was needed first.

This is not the way you want to get a drill in for repair.
The customer obviously tried to fix it first but couldn't get it rebuilt.
Had to first rebuild the drill to find out what was wrong with it. Turned out it was a hammer mode problem. The drill would not come out of hammer mode.
This can happen with any drill, especially to see it with the dewalt drill.
It happen on the makitas from time to time also. Sadly, it's normally not repairable as the parts are not available from makita. They only sell the gearbox as one whole unit. Which js a real pain.
Luckily, I had a doner machine I was able to use for parts.
The problem was a linear thrush bearing that had failed.
Sometimes, they can be rebuilt, but this one had broken both the cup washers holding the steel balls.
The only option you have when this happens is to remove the thrush bearing and hammer ring completely. so there is no more hammer mode.
#makita #tools #repair #fix #powertools #deandohertygreaser #machine #howto #makitarepair #drill #cordlessdrillfix #stuckinhammermode #makitafix #drillfix #drillrebuild #rebuild #dismantledandnlrebuilt

[@xtender5]

You know it'll be a fun day when it arrives in a plastic bag, don't you? 😂

[@jasonvandervalk3679]

I always appreciate how he remembers how to put tools back together.

[@xtender5]

@@jasonvandervalk3679 It is a marvel. One of those people who's been doing it for so long that it's become instinctual.

[@julianweiser9985]

There is a drawing on the makita page... however not one of the gearbox itself, brutal.

[@michaelfairchild]

Intro looks like LEGO and Makita did collaboration. That or someone didnt had money for puzzles, so he used a power drill.

[@justintasht1067]

Absolute genius really enjoy your videos 👍👍

[@РимХисамов-э5ы]

Почему вы жалеете смазку? Хотите по чаще получать инструмент обратно в ремонт?

[@vespamorelli7090]

It’s a frigging medal you need lad 😂😂😂 fair play to you 👏🏻👏🏻

[@anthonyduffy1278]

Dean. I love your speed of thought on these videos. You literally weigh up your diagnosis in 5 seconds, formulate your plan, immediately and then execute the plan at speed. There must be a description for your personality type. You brain is completely uncluttered by analysis. Consequently. As a viewer it’s very therapeutic watching your videos . As they are devoid of ambiguity or mental gymnastics. Just pure uncomplicated process with minimal commentary. I love the way you sling the fixed tool down on your bench once you are finished. Much the same as a gladiator in Ancient Rome would treat an opponent. Great videos. Keep them coming!

[@jernejloknar8011]

Don't be scared of a machine in pieces, they usually only fit together in one way.

[@joen9275]

I only use them, never taken one apart... That said, your years of experience shine through! Great video! And explaining all the little things really pulls it all together for a great video. Thanks for sharing and you've got a new subscriber... Have a great day! 😊

[@ManMountainMetals]

YES😂 A random bag of parts!!! 50% discount because half the work is already done ✔️ 😅

[@paulsullivan3324]

I like the straight forward content of these videos. Keep them coming Dean!

[@jasonbuckler190]

Genius! Good job and good on ya for having scrap parts. Ironic the solution was going in from the other side to fix hammer

[@johnmorrissey1675]

Well at least the battery is in one piece 😅

[@tommiylitalo8875]

Really nice video! I have problem with ball bearing inside gear box. Do you know the size of ball bearing? i wanna buy it before disambling the machine, because i am not as talented as you!

[@m.j.9627]

Can the unit be reassembled without the hammer function? I would prefer to retain the drill and use it as a simple drill driver. It seems so terrible to simply toss it in the bin and the cost of a new gear housing is basically the cost of a new tool. I appreciate any feedback.

[@TorontoWorkshop]

I had the same question I may try taking it apart and seeing if it works that way

[@tombarlow6176]

Hi Mister what a pleasure it is to look at you working. Is there a tool that you don't know. Greetings from south Africa 🎉🎉🎉🎉

[@sdjnwhyNZ]

The Chuck on my DHP484 has been glued with high srength thread locker that I have to use the following items to remove it: Shaft bearing side: - impact grade E10 torx socket - 3/8 ratchet wrench + leverage pipe Chuck side: - impact grade 10mm allen key (biggest I can find, about 180mm long) And cleaned with maf cleaner then soaked with CRC lubricant before loosening it.

[@chrisobrien5264]

That’s some bad bastard to send it in like that. The gearbox disassembled is just cruel!

[@Ivan-kh4kh]

I had this problem eventually learned how the mechanism worked but I couldn't for the life of me figure out how it was sticking in hammer mode. I remember the bearing (that you pointed out as the problem) being questionable and now I know was the problem thanks to you, but don't understand how it keeps it in hammer mode. Wouldn't it prevent it from being in hammer mode if it's collapsed?

[@siggitiggi]

Ball bearing pushed the rattler in (he explains it around 12:15).

[@한공-n3k]

안녕하세요. 저는 한국에 사는 구독자입니다. 영상을 통해서 딘 도티님의 기술을 배우고 싶지만 너무나 종류가 많고 많은 연습이 필요한것 같습니다. 저는 제 직업을 해야겠죠? 존경스럽습니다. 그곳 주소와 연락처를 알려주세요. 택배로 보내서 고치고 싶습니다. 택배비가 얼마 나오는지 먼저 조회해 보고 싶습니다. 답장을 부탁드립니다. 건강하시길 바랍니다. 감사합니다.

[@Zogg1281]

I found myself writing a sentence saying that "I can't believe someone would send in a drill in so many pieces"...... and then realised what I was saying!!! Of course people do things like that. It's probably healthier for the drill having a professional re assembling the carnage that was created. The thing I really can't believe is how few missing parts there were!! I've never seen the hammer selection side of the drill dismissed before. That was really cool to see. I am very, very, glad that the owner of that drill hasn't seen that part dismantled either..... that's enough to give you nightmares 😂😂😂 Very cool video, thanks 👍👍👍👍👍

[@piotrsuso977]

Hello Dean. I hope you can give me a hint. A had same problem and I did the same. Took it apart and assembled back together, but now when i want to fasten a drill bit, I can't. It doesn't have that ratchet thingy. I don't know how to describe that, but I'm sure you know what I mean. Which part of the gearbox is responsible for that feature.

[@bertwilliam1348]

Dean I have a fairly new dhp487 brushless that’s stuck on hammer mode but you can select different modes Just staying on hammer all the time. Any ideas to help me out? Thanks in advance

[@estisab2922]

That hammer option is most useless anyway. Can do well without. Good video. I had one stucked of these and threw it to trash maybe fix next one :)

[@JDLarge]

Kinda like a jigsaw puzzle bagged on a Friday, no time for ALL the pieces… nice job!

[@bernardwesterbaan4673]

Tnx for this video! My unit does not go all the way when shifting from hammer to screw/drill. I will follow this video and see if I can see the issue. Tnx again!

[@timmiusmaximus280]

Thanks mate! Your video helped me see why my drill wasn't switching gears. I'd lost the little pins that hold the ring gear, and hadn't even noticed. I made some more and put it back together. Works like it's supposed to now. Much appreciated for unintentionally showing me the problem.

[@deandohertygreaser]

nice one,

[@tzsteve33]

Love watching these Videos Dean, thx for sharing

[@Billy-in7rl]

Great job Dean i would of done it slightly different by smashing it up and buy a other

[@johnrutherford4042]

Excellent tutorial thanks for sharing 👍

[@deandohertygreaser]

My pleasure

[@mickgreen850]

That was very good work to dump that from a bag and put it going again I was very impressed by that

[@spacemole]

Any idea what the bearing is called? Seems i need to try find one.

[@harbardtan596]

Thesame case with my makita DHP 484

[@MarkCw-fx4fv]

😢wish you could do my DeWalt 796 drill that's also stuck on. Hammer mode have had the gearbox out cleaned and inspected but nothing Brocken followed part diagrams to rebuild it and still no matter were I set the color it hammers all the time

[@ritchierennie8556]

makita drill DHP484 i would have sent it back in the carrier bag, with note saying You took it to bits u tix it and find missing parts.

[@TheSir2005]

Well i use the hammer drill function all the time on my drills, everyone does cause nobody likes grabbing a sds when you have to put in a bunch of small fasteners in brick. Wouldnt even buy one that doesnt have it.

[@paulsullivan3324]

Thanks!

[@deandohertygreaser]

Thank you for that.

[@ignasowo7196]

i have the same problem with dewalt dcd796, its always hammering but when i set it in other modes it hammers weaker, and if i get closer to hammering mode it hammers stronger and stronger untill i put it in dedicated hammering mode, could it be the same problem and if yes, is the disassembling proces the same or should i disassembling whoel gear box to access the problem ?

[@robertobezerra8376]

👏👏👏👏👏👏👏💯💯💯💯💯💯👍🇧🇷🇧🇷

[@daz9873]

Quality....i enjoyed watching that .....subbed 🏴󠁧󠁢󠁷󠁬󠁳󠁿👍

[@yorkshireworkshop3605]

Absolutely perfect thank you Dean 🙏🏼

[@jeffleake1960]

i would of rang the guy up instead of rebuilding but im lazy

[@KEIRAN1996]

I have a dewalt that I changed the cuck on it has the same issue it's stuck in hammer🤦‍♂️any advice?

[@prasadvn524]

Great work You have the knowledge and skill.Congratulations

[@juliosalazar6492]

Hola Dean, una pregunta todas esas herramientas las recoges de la basura? o te las traen para reparacion?

[@pekay9683]

Did you reapplied the grease inside of the gearbox after the video or you left those 2 blobs on the brake pins?

[@deandohertygreaser]

The gear box takes very little grease. A little blob is all that it needs

[@toba7160]

Nice Jop 👍🏼👍🏼👋🏻🇩🇪

[@nannesoar]

Wow, awesome repair.

[@daverichmond2846]

😳You’re a genius.

[@WalterGambirazio]

Ist PERFECT

[@eaglebaldonetough4074]

Hello Sir mine 486 broke down because of brushless motor smells burnt after not only a month use Bought it in April 2022 at pro+olians marseille the guy told me one year warranty only is it true Where I can find a good brushless motor to repair it?