Repairing a golden Oldie powertool. How to dismantle and repair a Makita HR5000K rotary hammer.

[@kevinhewitt1428]

My wife says that your attention to details and lubrication deserve a compliment.

[@nadoosah_]

😂😂🎉

[@nadoosah_]

😂😂🎉

[@slidebed]

Did anyone else see that big spark while Dean was knocking that needle roller out at 22:23, was a pretty good flash.

[@capk387]

Nice one Dean - could you do vid and explain about the different type of grease sometime, not something that’s ease to understand.

[@GRamerDim]

small fire/spark/combustion at 22:23 when hammering the bearing

[@deandohertygreaser]

See that. The bearing race and punch are both very hard. Not unusual to get a few sparks.

[@baldyslapnut.]

I have one of these. I got it 2nd hand in the early 90s. Brilliant bit of kit, still going strong today. Last job was a 100mm+ core recess to sink a cctv camera, so it didn’t get doused in water dripping from a tile hung facade. Took longer to set up a tower than it did to drill the hole😂

[@alouisschafer7212]

Super reliable old donkeys these machines but you need to keep them serviced.

[@timothystevenhoward]

I like your torque amplifier assortment. Always handy

[@VictoriaSkipp]

Im riding on the back of the Mrs log in.. i have one of these war horses..Makita like they used to be. I also got mine 2nd hand, cost me £20 for the gun 19yrs ago and £25 for grease and new brushes...GOLIATH of a machine. Great video Dean.. keep working ur magic

[@leonardpaciora5039]

Thanks Dean!!! Another great one!!!!!!

[@Jetpac74]

Great video as always Dean. Another masterclass for us all 👍

[@smashyrashy]

Fantastic as always

[@deandohertygreaser]

Thanks again!

[@jasonbuckler190]

Great work, love the detail. See, your NOS does come in handy sometimes!

[@Marcelo-56]

Dean usted es un profesional de primera línea👍

[@gregoryyearwood455]

I have the HR5000 for 16 years and still running strong. The SDS tools are lighter but need more maintenance

[@thelastofthemartians]

Was widening the o-ring grooves on a lathe not an option?

[@tdotw77]

Yeah I think that would be an easy task except he's not a machinist and doesn't have a lathe, as far as I know. I agree tho I'd stick it in the chuck & open groove up to accept that bigger o-ring instead of searching for new part. Assuming the dementions are the same otherwise.

[@drshrempy352]

@@tdotw77 I assume those parts are hardened?

[@tamask001]

That thing is harder than a door nail, it has to survive millions of hard impacts against the tool.

[@mattjenkin1258]

@@tamask001 Yep! we tried this years ago, ended up grinding them as we couldn't get the finish right with insert tooling.

[@garethmcmahon9769]

Nice one Dean, still have one of those, you can get some mileage out of them when a bit of care.

[@edwardlogan267]

Dean, could you make a video on how to fix the yellow part on a makita battery if it breaks??

[@derekadams729]

Sure you could machine oring grooves on the old piston and striker to fit the new orings.

[@Damicske]

I'm thinking the same or if the old groves are deeper, that is asking for trouble :( if they're the same then no problem just on the lathe and make the grooves wider.

[@mattjenkin1258]

@@Damicske I've gone down that road before. Not on a HR5000 but an old Kango machine, i spent ages trying to source seals that would work when they discontinued the proper ones, nothing worked reliably so i set about making some fit. My god those strikers are hard! it turned into an unexpected lesson in lathe insert technology and a almost encyclopaedic knowledge of the sandvik-coromant catalog. We ended up using a toolpost grinder as we couldn't get the result we were after with regular tooling.

[@Damicske]

@@mattjenkin1258 doh forgot about that. yeah those can be real hardened through and through

[@Damicske]

A buddy of mine has a metabo sds that isn't knocking any more, he bought a bosch because he is working in his house and needed a sds quick. Now I know that it isn't knocking we can try to repair it so he has 2 sds drills :). I think the o-rings are gone.

[@markojuros6533]

Like new, sounds ok.👍👍👍👍👍

[@prasadvn524]

Nice video

[@deandohertygreaser]

Thanks

[@niallphillips6819]

Can anyone please tell me what grease to use have it stripped ready to go

[@Marcelo-56]

☝Hoy está más relajado, tranquilo y hasta más ordenado, porque los tornillos y otras partes pequeñas las puso dentro de una bandeja improvisada (la tapa de la base del motor)👍

[@laza8678]

Hi, can u send me link where to buy ball bearing puller like yours at 19:30

[@ElMariachi1337]

nice one!

[@Marcelo-56]

8:34 "amplificador de torsion"😅😅😅

[@marcelsmit8789]

I never knew a Torque Amplifier even existed....

[@michaelfairchild]

Best tools are the simple ones. Same with cars and most of other things.

[@AnthonySmith-hr2kp]

Nice joke b Dean. Love it watch yea work.

[@Zogg1281]

I wonder how many times you'd have to replace a 2024 machine compared to how long that machine has been working for???? 🤔 It would have to be an ongoing experiment as that old Makita is still running and probably will still be running when the 1st of our brand new machines, in this experiment, can no longer be repaired and needs to be replaced!!! 😂

[@ff-mu6cc]

why are you using the same cloth to wipe your hand in all of your videos

[@tommeier2299]

he has tons of it flying around in his shop. When he is hammering at the end with the drill on the stone (?) you can see it sometimes. Maybe he has robbed some Scots and uses their kilts? ;)

[@ff-mu6cc]

@@tommeier2299 😂😂

[@fernandovergara3119]

Dónde chufa donde estas

[@Marcelo-56]

Antes las herramientas estaban diseñadas para trabajar muchos años, lo primero era la calidad. Ahora son puro plástico descartable, salvo pocas marcas buenas. De todos modos, hoy el negocio es vender más, la calidad no importa‼️ Aquí en América del Sur solo se consiguen porquerias chinas y las importadas de buena calidad cuestan una montaña de dólares😡🤬

[@tamask001]

I wonder why they switched to rubber seals from metal ones. The metal seems to have lasted nearly forever. Planned obsolescence?!

[@jasonbuckler190]

I seem to remember from somewhere - dean or otherwise, can't remember - that when those metal rings break all hell can occur due to bits of small metal jamming everything up and getting to places they shouldn't, like gear teeth. While they last a long time, it's the catastrophic failure that *could* happen to other parts. That said, not much different than piston rings in an engine...

[@deandohertygreaser]

That is exactly right.

[@alouisschafer7212]

I recon its due to manufacturing costs and if these metal piston rings ever break with small fragments getting flung around in the hammerpipe it would ruin the hammerpipe, striker and piston.

[@enemyofthestatewearein7945]

I'd guess since the grease needs changing anyway, it's not a big deal to swap the o-rings when you do a service.

[@darylhudson777]

I love the old tools and I know you don't have the time to do it but I would have probably just took the time to polish up the aluminum a little on that thing and make it look real spiffy that I hope it lasts you another 50 years

[@deandohertygreaser]

So would I, but it's not my tool. And I don't think the customer would want to pay me for the extra work