Delonghi Brew Piston Infuser Repair | Step by Step 

A short update since my previous comment: I have ordered the kit with o-rings from Amazon and have replaced all of them, carefully installed with the transparen grease, by following all the steps in your video. Now the machine works as if it was new! Even if none of the o-rings were cracked or broken, they had lost their elasticity and so they were not sealing as they should. Thanks again, probably if it wasn't for your video, I would have even considered to just buy a new machine as it was so frustrating!

Thank you, great video. I keep getting intermittently no coffee coming out of the dispenser, instead it pumps into the drip tray from the left hand side. I've stripped the machine down and cleaned everything I can, I've also replaced the diffuser. I've run the machine with the covers off to see if I can see where the issue is but I can not see the water dripping/leaking from any of the clear tubes so I am suspecting that it is coming out via the bottom of the solid black steam valve. I did not remove/repair the Brew Piston as at the time I did not you could. Would an issue with the Brew Piston cause no coffee and instead water to leak from where I have described? Any help would be very much appreciated.

How simple and easy with such a video, wonderful filmed without any word or music, the best for a good concentration...Tina Turner would say : "Simply the Best"! . Lot of thanks , very useful!!👍👍,

What an awesome video. So detailed and you went slowly enough to show all the key details. Thanks so very much!!!

For the first time in my life I see Very detailed service. Very professional video, Thanks from all of us !!!!!!!

awesomely filmed, thank you very much, i could very easily follow you.

This man understand how to make a restauration video. Very detailed. Thank you for sharing!🙂

Sehr gut, mit Maßen der Dichtungen. Das Fett an den Federn soll vermutlich Geräuschen beim zusammendrücken entgegenwirken. Gut wäre es gewesen, zu zeigen wie der Brühlkolben befestigt ist. Es sind ja nicht nur die zwei Inbusschrauben, sondern auch noch 2 Schrauben seitlich vom Antrieb aus.

Hello myworks. Fantastic video and very helpful. Thanks for posting the sizes of the O rings. Please could you let me know where you purchace the O rings from at those sizes as im having trouble to get them at the sizes you mention. Thank you for your help Kind regards

I found the problem !!!! It was the weak water pump ! Thank's for your help.

G'day from Australia. Thank you for an excellent, comprehensive guide. All your videos are fantastic. And your generous free advice is appreciated. All the best.

Hi brother, it seems my previous comments disappeared. Thanks for such a detailed and very helpful video. Because of your great work I am also going to try cleaning my piston. May I ask that if you would provide the size of o-ring which is appeared at 5: 18 of the video? Thanks

Very thorough and useful video. Some comments: I think the brewer should be driven to upper position inn order to align the infusor before fixing the two screws. I prefer to use manual tools to have more control and not over tighten screws. I also hope you use food grade silicone 😀

The gay abandon with which you dismantle the bits scares me! But then you know what you’re doing!😳😳

It is possible to get an exploded view of the Longhi Magnifica S. You can guide me. Thank

6:12 Soda is OK, as it makes the base solution (even if it's very weak though), but why citric acid?🤦‍♂ It makes both chemicals useless but look's like doing something by creating bubbles:D

Magnifica s ecam 20.11x coffee is good but no steam or hot tea water no leaks,, 2 springs are broken in the piston in seven parts i will replace the complete unit.

I would give you my coffee machine for service without any further questions. Awesome work!

Merci pour cette vidéo qui m'a bien aidé car j'ai eu le joint de la vanne mécanique de ma Delonghi Dinamica FEB 3535.SB qui a tout simplement cassé 🙁 . Je confirme bien sur Ebay , on a des revendeurs de pièces détachés trés qualifiées avec les plans de montage des joints et les bonnes références . J'en conviens , il faut prendre son temps pour bien trouver la bonne piéce et selectionner le bon vendeur 😉. 👏👏👏👏👏👏👏👏👏👏👏👏👏

Wlasnie robiłem to samo w moim bo po 6 latach przestał działać...oczywiscie wszystkie inne elementy tez wyczyszczone. Polecam! Smiga Jak nowy !!!

Thanks for these great videos, after 5 attempts of opening up my Delonghi Ecam machine trying to work out what was wrong I managed to fix it with this guide - I bought the tools you used and then replacement O rings from Ebay and replaced them all, following your guide I stripped down and cleaned everything (flow meter, Boiler, every pipe, infuser, Generator). Your refurnishing guide was also very useful. These are by far the best Delonghi repair videos on youtube - Now I'm Enjoying a great espresso this morning - Thankyou!

Alles was Recht ist!! Klasse!! Ich stelle fest, dass ich bei meinen Abo`s aufräumen muss. Die meisten die hier Videos um das Thema zeigen ist nur Bla Bla.....

Thanks so much for this! Been waiting 2 months for a technician to look at my machine (I'm in Kenya). Decided to try myself after finding your video. I have replaced all o-rings (except the 2 x 6.75mm o-rings as the closest I can find here are 6.07mm). I am still getting a strong jet of water leaking from the seal of the part you are removing at 2:07. I have noticed that the 2 large coil springs are very stiff. I can't seem to push the piston in as far as you are in the video. Could it be that the coil springs have stiffened and need replacing? Having said that, even with coil springs removed, the piston does not move in and out easily. Would love to hear your thoughts.

Hi thanks for the detailed video! I've an ecam 23.420 that is blocked with the message : insert the brewer group. I tried to clean it (after long battle to extract it because it was not at the right end point) but after 1 coffee it blocks again : do you have any advice and /or video to check why it shows this message? Thanks

Outstanding video. Chapeau.

Thanks for the great video! I am experiencing an issue with my Magnifica S espresso machine. Seemingly at random, but quite frequently, the water that should flow from the coffee dispenser instead flows directly from the bottom into the drip tray. This happens both during startup, when the dispenser goes through its initial rinse cycle, and when I press the button to perform a rinse. The hot water flows only to the drip tray and not in the waste container. When I attempt to make coffee, the machine starts pumping water, but after a few seconds, it switches to the cleaning and emptying phase without dispensing any coffee. The ground coffee accumulates as powder in the waste container. Sometimes, I can temporarily resolve the issue by performing multiple rinses to get the water out from the diffuser, but only in 50% of the cases am I able to obtain the desired coffee. On some occasions, however, the machine works correctly right from startup and throughout the coffee dispensing process. I have disassembled everything including the mechanical valve to check if everything was okay. The observations are that there are no o-rings broken, as well as that I see the hot water coming into the mechanical valve but then exiting directly from the little pipe that goes in the steam dispenser/mechanism, and from it the hot water flows from its bottom which is going to the drip tray. For some reasons, the hot water does not go through the infuser but it exit directly from the mechanical valve. As I have not seen cracks or o-rings broken in the mechanical valve disassembly, I'm thinking about if there is not enough strength for the electrical motor to push the infuser up and somehow preventing the mechanical valve to work as designed. Or maybe, even if the o-rings are not broken, they might still be worn off. If you have any view on it it will be great

Bonjour moi j'ai une Delonghi ecam23 120 s'allume s'allume mais clignote en rouge j'essaie de faire le détartrage rien ne marche la vapeur non plus démonter pour nettoyer qu'en pensez-vous chef

Hallo guten Tag, Ich habe ein Delonghi Primadonna Elite und beim einschalten und Erst-Spülung läuft das Wasser vom hinter BrühKolben runter ins restkaffe Behälter anstatt durch Auslauf vorne. Woran es liegen kann? Auf eine Antwort würde ich mich sehr freuen.

Thank you for your help

Nice working brother.❤❤

Merci

I have one more question. I would like to change the silicon tubing that attaches to the infuser unit and the one that actually dispenses the coffee into the cup. I have spent hours looking for a good parts diagram but not seeing anything that's very helpful. Can you tell me the size of the tubes please and thank you? I believe they are silicone tubes? Thanks so much for your time!!

Hello i have the same 23450 delonghi. The water is coming but coffee dont .what can it be i change the infuser allready.

I want to thank you for creating and sharing these repair videos. They are excellent and invaluable. I was able to perform a repair and maintenance today on my own. I avoided transporting the unit and waiting 7+ days for the one repair person in my area.

Grazie a questi video super dettagliati sono riuscito a riparare la mia macchina del caffè , sapere prima dove mettere le mani non è una cosa di poco conto . Grazie!!

Hello is there a good diagram and part numbers of what size seals go on each of the parts? Ive seen kits, but no diagram. Im specifically looking to confirm seals on the part @ 2:15 and @ 3:17. Thank you!

Klasse das war wirklich hilfreich.👍

merci beaucoup jeune homme :D

Hello, thank you for this very helpfull video. For me it doesn't works. I have the classic problem of water not going through the coffee but to the overflow bin". Everything is very clean. Anybody has any idea ? Thank you for any clue. Maybe it's just the toric joints of the infuser ? My machine is the 23.210.

This is the best video ever for this brewing unit! Thank you for taking the time to film it and share it with us. About to do the same to my machine. In the last month all of a sudden the coffee comes out tepid at best (but the warm up water when I turn the machine on is boiling hot; as the rinse before shutting down). Since I get tons of water in the drip tray just warming up the machine I assume something is up in the brewing unit (fishing for a solution). Since the machine is 10 years old it can't be a bad thing to service it anyway

So if I make a normal coffee, and check the container and see a wet puck, but no 'extra water' around - piston should be okay?

What kind of grease was used? Do you have a link for a new infuser?

where non earth do you obtain the O rings you describe. and no mention of the spring under the grey bit. is it held in situ by the strange bulbous bit and ? which way up?

Thank you for your video it helped me a lot and now my coffee machine is clean 🥰🥰💪

Ill change out my old one, and revise it my self (if not cracked)

Greatly appreciate this well done step-by-step video, which helped me to solve the problem (The same seal was broken). 👍

listening to those clicks and noises must be good for falling asleep.

Many thanks for the video, I followed it step by step, but now the machine does not turn on anymore. The display is blue but no text and nothing is starting up. Any ideas what I did wrong? The machine is a 28.465

Bonjour , encore merci , pour ce tuto , qui m'a permis de réparer ma Delonghi Dinamica FEB 3535.SB . Ayant trouvé le kit complet en ligne , je n'ai plus d'eau dans le bac à marc 👌. Les cafés se faisait pour ma part étrange , mais tous les rincages arrivaient dans le bac à marc. Et biensur , le café en était impacté en gout . Aucun message d'erreur affiché . J'ai pris mon temps et est suivi ta vidéo a la lettre , c'est parfait ✌. Encore 👏👏👏👏👏👏👏👏👏👏.

10:30 maybe so they don't screech like in Nivonas 11:26 that mushroom-shaped seal is kinda dented, IMO it would be better to change it too (seems identical to the one in DeLonghi's portafilter espresso machines like the Dedica, but I could be wrong)

Bonjour Bravo pour les videos Je voudrais réparer une machine Jura J9 .La pompe ne marche plus et fait un grand bruit. Comment vous contacter pour vous envoyer la machine chez vous? Merci

Хороший формат подачи контента. Качественная съемка. Всё понятно показано. Успехов!

Hallo. Vielen Dank. Super Video. Nach dem auseinanderbauen nach dieser Anleitung, habe ich festgestellt, dass die beide Federn im Brühkolben gebrochen waren. Habe mich gewundert wie das bei solchen stabilen Federn passieren konnte. Diese werden wahrscheinlich nicht einzeln verkauft? VG.

Wenn man typisch Deutsch in einem Video beschreiben müsste -würde ich auf deines verweisen. Und das ist wirklich im positivsten Sinne gemeint. Die Hingabe, Genauigkeit und teilweise Pedanterie sehe ich in der Forum eigentlich kaum mehr. Tolle Arbeit, wirklich wahr. Soda und Zitronensäure - heben die sich nicht gegenseitig auf ? Das eine ist ja eine Säure das andere eine Lauge. Wird machen das noch zusätzlich im Ultraschallbad, aber nur mit Soda bis jetzt. Schöne Grüße

Do you know what the water hose specs are in the machine. Specifically the supply line from the reservoir to the pump. They are larger diameter soft. I can't find replacement or description anywhere.

Hello and thanks for all your effort, it's been really helpful so far. Right now, after 5 or so years of faithful service, it looks as though my Delonghi Dinamica is in need of new seals all around, as well as a new spindle nut. I followed the links from your videos, but these spare parts are currently unavailable in Amazon. Do you have alternative links for these parts (o-ring xl kit, brass spindle nut)? Thanks in advance

Witam prawdopodobnie po czyszczeniu i wymianie uszczelek mam problem ze spieniaczem . Wiec para jak i goraca woda zamiast ze spieniacza leci wlasnie z tego tloka . Mozliwe ze to zbieg okolicznosci i cos sie zepsulo

I have an ESAM and the coffee powder is spilling and making a lot of dirt inside the coffee maker, the coffee residue is not discarded in the form of a "biscuit". Could it be a piston problem? can i send a email with a video?

Hi! I have an issue with my Delonghi magnifica pronto capuccino. The translucid yello part of brew piston is filling of water and then leaking into the ground container. I replaced all the rings with factory repair kit but the problem's still here. What's your opinion please ? thanks !

This the normal user will never do in the life of their machine (because they don't know about it, and they are unable to). Does this mean that the upper piston usually goes all yucky and moldy until people dispose of their machine?

Hi, i find your videos very helpful. I do have an issue when i do steaming with my magnifica S, the steam does not come out to the steam wand and i see it's coming out of the brew piston/generator area. Any idea what could be the problem?

Superbly detailed. Very many thanks for that. I had a leak into the grounds container and assumed it was an o-ring problem. I managed to source a set of o-rings and took the assembly apart. The o-rings were not broken but the piece shown at 7:11 was: the white flange on the left that the screw goes through had broken into about five pieces. I cleaned it all and replaced the o-rings anyway since I had them and reassembled it just in case it was a worn o-rings after all and that the broken piece was still OK (it seemed to be held in place OK even though I couldn't fit the screw - I had nothing to lose. It continued to drip so I assume it was the broken piece that was the problem so I've ordered a complete assembly.

Hi amazing video. My machine has been leaking and found out its due to a crack in the big block shown in 2:07 . I have tried to fix it by using a soldering tool to melt the plastic crack. I have not yet checked if it works as I somehow have lost the part you show in 11:29 . Do you know whats the purpose of this part?

Thanks, very professional video. Where can I buy the overall O ring kit??

I see that you have the proxxon polisher. Would you be willing to share what you were using for a polishing compound? And what kind of polishing wheel you're using? I can see from the video the one you have is not one of the standard ones that come with it

Hello friend, I have the same coffee machine. Recently, there was a lot of clean water in the drip tray after making two cups of coffee, and there was more water in the drip tray after making four cups in a row. Could you tell me where the problem is and how to repair it? Thank you

7:48 o-ring sizen

This is the most detailed repair video I've ever seen, very good job !

thanks so much. I have a leak at the top of my machine and I'm pretty sure it's this thing leaking.. buy thats alot of seals and parts to remember where they all go.. im gonna try to do my own repair because the machine is amazing..

Hello. Could you tell me where I find the complete set of gaskets for the mechanovalve and for the infuser? thank you

i found a roughly used 4400 and by the looks of it most of the parts are the same so im gonna go through the same process as your showing here thank you very much for the detail!

Hallo! I have done all these steps, cleaned all parts, replaced all gaskets but I still get water drips in the coffee grounds container. I have also cleaned and changed all gaskets of the infuser, so all brew group has had a proper maintenance. Any idea what this can be?

Good evening, I have a problem with this same model of De Longhi. The machine is 9 years old, always decalcified and I use bottled water. For a few days, the machine has stopped delivering water when it is switched on and not even coffee and it goes into alarm due to excessive pressure as if it were blocked by something. The cappuccinatore, on the other hand, works perfectly and the water is hot. Yesterday I decided to open it and I cleaned the flowmeter, tray and drain pipe where the water is expelled when it goes into too much pressure, and the internal tray with the two nozzles where the coffee is dispensed. After this cleaning the machine ran for the whole day but this morning the same problem again. Since the problem seems mechanical to me, what do you recommend to check? Could it be the clogged mechanovalve? Thanks so much for the help

You are the master! Congrats Sir! :)

i have a EAM 3400 and the thing you just repaired is im a different place and very hard to remove the electrocal wiring. ugh. i need help. 😅

4:43 What is thet tool please ???

great video - what is the clear liquid from the syringe you are putting on one of the seals

Plz what type of grassed u use and where can i find it in automotive parts?

What's the spec of the last small O-Ring please !

Nice detailed repair, but can you leave an link to these finnest brushes ?

What it the best o ring kit to buy ?

Sama przyjemność patrzeć na każdy krok. Uczę się metodologii ;). Good Job! To nazywa się pasja...

Hello! Very helpful your videos! I have an ESAM 4000 B, and i would like to replace the orings.. do you know if the dimensions of the orings on the video, will fit to my machine?

I have the Delonghi Eletta ECAM45.70X and find the milk isn’t getting hot, it froths but only like warm milk comes out. The machine steams and produces hot water. What part do you think needs attention? Do you have any video on how you fix it? Thank you

Thanks for making this video it's been very helpful so far, but I'm still having an issue. When attempting to make a coffee the water is being pumped directly into the drip tray, the steam wand works fine. All the O rings look fine and the Piston was clean, I have very soft water so there is no lime scale at all and all the pipes are clear. At 2:23 you show a spring which contains a silicone tube with a mushroom cap. They look separated, in my machine they are connected and do not pull apart when the spring is released. Is it's normal behaviour or is the spring meant to separate them? I can manually pull them apart. I can't find that spring + tube + cap as a spare part anywhere although it's available without the tube. My Model is ECAM 23.420 . Any advice would be really useful.

Hi, do you have a video or instructions of removing everything in order to be able to remove the brew piston? This video only shows the operation with the piston already removed. Thanks!

what's the Oring dimension for this. including the red and black Oring seal size

Does bad one cause noise? Thanks

Good morning ! Thank you for this great video ;-) I'm in France and thanks to your videos I can fix my coffee machine! I have a problem, one of the two springs is broken... I don't know where to find this part on the internet... can you redirect me to a site, or maybe you have one? ;-)

Thanks, great video 👍

What is o ring material? Silicon? viton? nbr???

Dzięki dobry człowieku. Pozdrawiam

Superb - very helpful.

Thanks for the helpfull video! I have a water leak: the (hot) water comes from under the part that you start to remove at 1:58 in this video. I have lifted it, checked the rubber rings and they are good. Can you help me?

My ESAM 4200 leaks from the infuser but only when on the steam setting. Do you have any idea which part / seal in the infuser may have failed?

Hola, me puede decir que errores de funcionamiento daba la cafetera.

Where to buy valve which is connected on piston? It is only valve from which you didn't disconnect the pipe.

Po ilu kawach trzeba wymieniać uszczelki zaparzacza i uszczelki tłoka ? czy da radę wymienić tą największą czerwoną uszczelkę tłoka bez wyciągania zaparzacza z ekspresu ?

Hi, thx for video. I have followed everything step by step. After replacing my machine's steam wont give any water and i didnt touched that part of it. Can you help me what could be the problem?

Very helpful videos. My ESAM3000b does not brew coffee, when I select a 1 or 2 cup coffee it grind the beans and creates a puck, but no coffee or water comes out of the coffee spouts, only water comes out of the steam wand. Any chance you know how I could fix this? Thanks!