Rotary Hammer Drill Restoration | Makita HR3520

Rotary Hammer Drill Restoration Video
I found this hammer drill from japan recycle shop 18$. It doesn't work because of the armature doesn't move. After the restoration, this hammer drill works very well.
Power Tool Information
---------------------------------
MAKITA HR3520
Max.In Concrete 35mm
Core Bit Diameter(TCT) Max 79mm
Min 25mm
Joules 7.6Js
Blows per Minute 3,300bpm
No Load Speed 440rpm
Input Wattage 840w
Net Weight 5.8kg
I hope you find something useful & enjoy from this video!
I am happy to receive your feedbacks, advices, suggestions to improve myself.
!!! I apologize for the mistake if I have made in this restoration !!!
--------------Thank you so much for Likes & Comments--------------

[@robertoamaro5352]

The Ingersoll Rand 114GQC Air Hammer kzbin.infoUgkxqqoaX03nrziKwF7Bjjcc71YzLEleMvOS was just the tool I needed. I Use it to remove stuck bolts. If held at the right angle you can cut slightly into the bolt. Then turn the air hammer to where it will hammer the stuck bolt to unspin the bolt. Given a little practice it works great. This air hammer gives you the control needed to get the job done right. Very powerful yet still does not seem to have as much vibration as other guns I have used. One of the best I have gotten my hands on.

[@jrand2631]

Great restoration - I didn't believe you would be able to make that electric motor work again. 👍👍👍

[@gear_show]

Thank you 🙏🙏🙏

[@АнтонИбрагимов-ф5р]

Прекрасная работа! Мужчина руки растут от куда надо!

[@jpaulstrange8914]

Fantastic restoration, could I please ask my dad recently passed away , and left me his tools, he left me a similar drill, but the chisel function doesn't go up and down, only spins around. Could this be an easy fix or is it completely broken, really appreciate any help thank you

[@glennmoreland6457]

Invest in an insulation tester... So you can properly verify field windings, armatures & comms...🇬🇧👍

[@johncitosanz1486]

cierto nesecita una morsa electrica para comprobar la calidad del aislamiento electrico del motor universal

[@NM-xs1yr]

i think you still need sandplast chamber to safe your polishing time and will give better results

[@pksaini909]

Good very good

[@zerocks88]

what a smashing good time. thank you.

[@جعفرالعامري-ذ5د]

Good work 😍😍💣💣💣

[@gear_show]

Thank you 🙏🙏🙏

[@جعفرالعامري-ذ5د]

Pardon my friend 😗😗😗

[@frk380]

Wow that was nice big hammer

[@malleusmaleficarum9248]

0:13 - Wake up Polly! Wake up, Polly Parrot... - He's not dead, he's resting.

[@yeagerxp]

How do you defend yourself against a man attacking you with a banana? You shoot the man and eat the banana.

[@ferraridinoman]

He is no more!

[@FM-xt9kh]

yeagerxp فقپففعفيسييساا

[@pt477]

After what was done on the rotor, it should be balanced dynamically. The commutator is not cleaned by sanding but instead rolls on a lathe in the bearing

[@pt477]

@Clint Morningwood Ok :) t's just information that can be useful. I have been repairing such burned engines for 30 years

[@Bk99JzM]

Witam.Super remonty wiertarek,szlifierek,wkretarek i innych urzadzen,perfekcja,prawdziwy majstersztyk,dobre rece czynia cuda,dokladnosc,rzetelnosc.

[@bertmenden2645]

Next time just re-varnish your armature, and stator windings, that's what the copper wires were coated in originally. The epoxy mix melts under heavy use, and makes a sticky mess, and if some gets on the commutator ruins the carbon brushes.

[@johncitosanz1486]

cierto solo barnizar y meter al horno unos minutos ...

[@fredygames3572]

Знаете очень похоже на то , что он просто берёт либо в хлорное железо либо ещё в чего кидает нормальный инструмент и потом его восстанавливает......

[@AussoOnePlus]

Mr. Sophistication

[@mpalaskokkalis1476]

Τέλειο το κομπρεσέρ .

[@sgg8534]

Makita driil doesn't work which armature stailed

[@gchavsg1905]

Great restorations !! Your channel is awesome , like 👍

[@gear_show]

Thank you :)

[@somsaksuanghiran6676]

Makita model?¿???😁

[@DonnaMSchmid]

Fantastic, as always! It does my heart good to see these old tools being brought back to life!

[@gear_show]

Oh, really!! I am glad to see your comment.

[@ANG3LM1301]

I bet this guy puts grease on the plug

[@markharris5771]

As always a mind blowing restoration, but I have a couple of questions. The epoxy one has already been asked, but also why didn’t you use any filler for the worst of the pitting? Was it because of the levels of vibration the drill will go through? I know you’ll have a good reasons and asking the questions is in no way a criticism. As always compulsory viewing, thank you for posting.

[@tomalcolm]

Why the epoxy @7:40? Was there an insulation problem? Or something else?

[@Acesar2012]

Please answer him, i will wish know too.

[@markharris5771]

Me too

[@gear_show]

It has a decay in between, I filled it with epoxy to protect the rust.

[@zachikhothingo1]

what are you using to clean the plastic casing??

[@xl000]

This would be more useful with some commentary, like why some elements need to be replaced, or the color of the grease or something.

[@671jaguar]

Where do you get these parts?

[@Fred-ch2um]

Muy antiguo el rotomartillo porque el aseguramiento de brocas y cinceles no es SDS

[@iztokpajk2470]

Hi, I can not get enough of this video. :) Can you provide more details on your's, power cable to circular spring to brush connection? Around what does springy circular thing connect ? Only detail visible is air holes and copper shining.

[@JamesBond-wy6zb]

I suggest you guys not to put "before/after" thumbnail pictures. Just the way it is before restoration. The final result must be a surprise!

[@kalleklp7291]

I think this is the worst looking tool you've restored until now. It looked really bad but you saved it from the scrap bin and gave it new life. Well done..! What purpose does the copper windings serve, you put on there?

[@oherman]

Now I want to go to my local junkshops and look for discarded tools to restore. Cept they'll be all 220v. Rather than see them get torn apart for metals, I'd like to restore it for my personal use.

[@gear_show]

Oh nice to hear that 👍

[@夏みかん-z1e]

これはひとつのストーリーです

[@adriangarciahuaman415]

Buen trabajo amigo, saludos desde peru

[@prettynoose8497]

Whoa..wait; what tool is that at 4:34??

[@qlimaxbass5022]

BIG wooden hammer xD Liked Hold it close never know when it needs again :D

[@HeadCase55]

Yes!! I finished all your videos last night.

[@gear_show]

Wow, thank you for watching!

[@chadsimmons6347]

You did (not) tear down bit-shaft that does have rubber seals that needed replacing, your score 8-1/2 out of 10, (no-sub)

[@mantaship]

Why the copper coils? Did you cut these off first and I not see it? What do these do? Great restoration as always. This beast is a war crime waiting to happen.

[@ИгорьШноксель]

Самое интересное, ничего особенного не происходит, но снято и смонтировано супер профессионально, приятно убивать время.

[@domalberto3087]

MJOLNIR, Thor's hammer....LoL...6:20

[@thabaldwookiee1692]

I'm uneducated in these things what was the epoxy he put on the motor if anyone knows and what it does or is supposed to do. Great job man

[@NOTAMV]

One and two component epoxy adhesives, sealants and potting compounds offer toughness, high strength adhesion and cost effective performance in electrical motor and generator assembly applications. These compounds are designed to provide thermal stability, resistance to moisture, chemicals, vibration, impact and thermal cycling. Additionally, specific formulations provide superior electrical insulation properties, thermal conductivity and gap filling abilities. Source: Google

[@humayunsheriff8208]

Sir, really awesome mechanic u r. I'll salute 🙇‍♂️🙇‍♂️

[@YeuienTuLKTMDIY]

em hỏi chút, dung dịch tẩy ốc vít tên gì ạ. Có phải RP7 hay ATM

[@adude7050]

Great restoration as usual. Who makes that adjustable spanner wrench you used at 16:59? If I may ask?

[@gear_show]

I picked this wrench from used tools shop for free. It comes from japan, TOP AP-1030 PAT . Japan.

[@adude7050]

@@gear_show Thanks I found one on Amazon now to find bearing pullers like yours.

[@deivideduardomadeira9220]

Cará eu também dou manutenção em ferramentas elétrica temos umá oficina aqui no Brasil em Florianópolis está semana eu desmontei umá desta deu o Bicho foi para dar um jeito foi no oring do pistão funcionou está OK. Mas o problema é peças mas teus vídeos são Boms valeu é um forte abraço

[@anonimointernetual6603]

Esse senhor, dono desse canal de restauração, é japonês; então ele não terá como lhe entender, se você não sabia... Hehe!

[@henrydalton2673]

What is the tools called where you remove the bearings

[@gear_show]

This tool call Motorcycle Bearings Separator Kit 10PC.

[@GraduatedIn]

Puller set.

[@01Roberni]

Show... serviço muito bem feito 🇧🇷🇧🇷🇧🇷😎🇧🇷🇧🇷🇧🇷

[@gear_show]

Thank you!

[@mattamick1163]

You do the best restorations! Can u do a gas powered concrete cut off saw( husqvarna/partner, makita/dolmar, hilti, stihl , etc)? Ive fixed and resold 24 , still have 2 great saws Hilti dsh600x w the pump and blade brake, and a restored ( personally) makita 7311 that was non running for $100. Runs great now thank God

[@WilliamFielhauer]

Why you used transmission fluid instead the grease from Makita? Also, what is the product that you used to clean the motor rotor cavities? fantastic work. Thanks for the video.

[@gear_show]

Transmission oil performs better than grease. I use anti-rust spray to clean the motor rotor cavities

[@DigitalBhangari]

Rust 0, giant wooden mallet 1

[@yeagerxp]

Very good restoration 👍👍👍. May I borrow it? I need to break some concrete in the backyard LOL

[@beedebawng2556]

Excellent video. Thanks for the upload. I wish it were annotated to give neophytes like myself a better understanding of what we're watching.

[@johnwright6706]

Watching your videos is giving me the idea of doing similar to some tools that a broken. It's not like I'm going to break them trying to fix it since it's already a dead tool 😂

[@gear_show]

I'm glad this video help you!

[@alonzosanchez8577]

Incredible Work I Subscribed. 👍👍👍👍

[@zentornexxx3315]

Есть тут русские?

[@magabalgarin]

Канечно куда без нас😁

[@adriminecraft7000]

in 16:48 i was like: NOW! NOOOW! USE IT! USE IIIIIT!!!!!

[@syedkhaja2561]

Chipping machine rotor Nikali Uske bare mein maloomat karo

[@maxwang2537]

Beautiful! I like 12:00, and the bearing pullers (both inner and outer) particularly. I hope I could one of this and restore one day. Where did you buy these pullers? Thanks.

[@henrydalton2673]

Where do you get all of the tools I want to try this

[@gear_show]

You can search for second hand shop in your city.

[@ciabanga1]

Sorry but I have a question for you...why you don't use the sandblaster for this type of work??? Thank you....

[@leeashe4453]

Great Restoration. I have the exact same tool. Have followed your restorations step by step and got mine working again. The only issue I am having is I'm getting a leak of transmission fluid at tool holder. Do you know if its easily replaced? Is it threaded?

[@joe1569]

Close up camera work is fantastic. View is never obstructed-fantastic. Sped up time on screw removals is fantastic. These are the reasons why your videos are so darn good.

[@bertmenden2645]

Came out very well, nice job, it's useful again! Was going to praise you on pressing in new bearings instead of hammering then you pressed a bearing in partially with you vice (acceptable), but seat it by pressing on the inner race with a socket there by defeating the entire procedure. Also why spray lubricant on the cap screw heads, it doesn't reach the threads which need the lubricant to unscrew, and unless they are seated in a metal housing rather than plastic lubricant is of no use what so ever. Overall nice not overdone.

[@jollyroger7814]

Винаги, когато гледам подобни клипове, падам от смях! Електрически инструменти не се ремонтират така! Най-малкото е опасно! Реставрирана по този начин, машината става само за музеен експонат, който бръмчи. Whenever I see videos like this, I fall down laughing! Electric tools are not repaired like this! It's dangerous to say the least! Restored in this way, the machine becomes just a museum exhibit that hums.

[@user-jr8gp2en9b]

Very great job.

[@electromoris.......7871]

BELLÍSIMA

[@genius-1plus1Equalto3]

Before even 5 seconds passed, i'ved pressed a like button, coz its gonna nice again.

[@gear_show]

Thank you :)

[@danielm.4359]

Well thats what I call a Hammer drill!

[@nurmadinata8436]

Great restoration your chenel is awesome like

[@gear_show]

Thank you 🙏🙏🙏

[@feketekrisztian1897]

Perfect work. Nice finish! Gratulation for you! Professional skill!

[@gear_show]

Thank you 🙏🙏🙏

[@barkebaat]

This tool looks like it spent the last decade in the bilges of a trawler.

[@is7a9nono46]

great job the big wood hammer hhhhhhh

[@somsaksuanghiran6676]

Makita model???????🥰🥰🥰🥰🥰🥰🥰

[@barkebaat]

10:26 - Note to self : I should get one of those for between my toes.

[@johncitosanz1486]

la puedes obtener es una dremel o similar, la venden en linea

[@MartisGTR]

8:17 *breaks the sht* lol

[@ДэньчикНик]

Gorgeous work 👍👍👍

[@seppeprod]

Good job

[@hardyanpajero69]

👍👍👍😎☕🍩

[@MrVlassisd]

Amazing restoration as always. Greetings from Greece. 👍

[@flyblu80]

Hello I have a similar but older makita without clutch, from the 80s, the engine housing is square instead of round. I can't identify the model missing the plate. I wonder if there are online makita forums, I haven't found any

[@shanechepren8119]

What’s the white powder you used to clean with water?

[@robocop6666666]

Lol loved the big hammer what I like about this site is it not too long and not too short ( the Goldilocks thing ) very interesting to watch thank you 🇬🇧

[@Arachneko0127]

万力でベアリング入れるのいいなぁ～ いつも叩き込んで入れてた。 参考にさせて頂きます！

[@CameronFoust]

Honestly the only thing I can think of out of this whole video is wear work gloves while operating your grinder and wire brush. I’ve had wire brushes that were bad before shoot wire into my hands and gloves saved me the pain. I’d advise that while using any grinder with any accessories on it honestly just as a precaution

[@stormkhan4250]

I would also add using automotive body filler to fill in all the corrosion holes in the casing to restore the unblemished look to the tool.

[@lolcec81]

Комментарий в поддержку канала и видео, а также труда мастера отреставрировавшего этот шуруповерт.

[@diegolamaart]

looks like the previous owner was aquaman

[@Eshkinckot]

you didnt resore the metal serfice ... there are a lot of defects...

[@xxnickthegreekxx]

I have the hr5000k the big brother to this I’ve done a rebuild but used moly grease in the top I noticed you used transmission fluid, should I clean and use trans oil?

[@rephleX67]

yes, but i think he used to much, i restored a Hilti TE72 and the whole Pneumatic System + the Gear System need in total 70ml Oil.

[@ПавелЖуков-ы1р]

In reverse looks like a guy is busting the good tool.

[@jbsthegamer]

Where can i get that gold color looking rotary tool?

[@harrygregory6227]

is it hammer time?

[@mred8002]

I use a vice grip pliers to hold bolts, washers, and nuts to the wire wheel. Saves fifty-two pick-up from the wheel launching these parts! Nice job.

[@gear_show]

Thank you for sharing 👍

[@racma8698]

After this kind of work this machine should be much more expensive than a newone ! Congrad.

[@AlmightyKing2556]

What kind of puller set you using?

[@richiep102]

Enjoyed that

[@mohamedalli4832]

Good job buddy

[@sorintosu3669]

Hello, can someone tell me how to Change from rotation to hammer?

[@gear_show]

It depends on the blade you use.

[@sorintosu3669]

@@gear_show is it changing automaticaly?

[@mariantheplug920]

Maybe the best tool repairing channel on youtube,very good job.What is the "glue"that you use on the armature,maybe a epoxy glue.And why you decide to use it here

[@anonimointernetual6603]

The best restoration channel is "My Mechanics"! He does a great job on anything that he wants to restore! But the "gear show" restores very well too!

[@shakedatass8603]

At 6:55 was that a stomach sound 🤷‍♂️

[@miguelcastro7321]

Miguel