Post By noidle22
Breville Smart Grinder - BCG800/820 dismantle
My Breville Smart Grinder packed up a few weeks ago and I was wondering if it was due to something being stuck in the Grinder. After calling the service center I found out that they don't really repair these grinders.
So I decided to see if I could take it apart myself. This Grinder is not built to be dismantled. And honestly I don't actually even think it's possible.
Below are the photos. I ended up destroying it completely but at least was able to document so that others can see the internals of the Grinder. Which may lead to a better decision making process when buying one of these.
Plenty pictures below (with a few comments to explain)
In order to remove the top plate, you actually have to remove the side plates, these are held in place with metal pins that are impossible to get to.
This is the bottom end of the grinder, the earth(ground) wire is soldered to one of the lugs, so you would need to remove that if you wanted to remove the sides.
Below you can see there are 2 screws (on each side) that are revelead once the plates are removed. These screws hold the top plate in place.
Top down view after plate is removed, this is the mechanism used for setting the coarseness of the grind. All plastic of course. There is a small motor under the small cog.
To get the actual grinding mechanism out, there are 4 screw which can be accessed from the top. However the wires are to short to get it out, so you need to cut them if you want to work on the gearbox.
Underside of the gearbox. Thats the motor used to grind.
After removing the metal plate, we can see the pinion that is used to turn the grinder. Metal on Plastic.
The 2 gears used to grind the coffee, The only way to remove these gears is with a spanner on each side of the mechanism. However, there are springs and shims inside, so as soon as you remove it, all those springs, shims and ball bearings fall out. Rendering it useless.
How long did it last? That is an 800 not an 820 right? As expected it looks like the plastic gears are the main breakage point. I've had mine for at least four years so guess it's done over 100kg and I'm not expecting it to last much longer.
Yeah, I wanted to fix my last one and also couldn't figure out how to dismantle it without using my trusty persuader (aka hammer!)
Originally Posted by ggoosen
But given you've now dismantled yours, it is not possible to figure out how it was originally assembled?
Honestly I was wondering the same thing. I have no idea how they do it
Ive been trying to work out for ages how to remove the bottom burr on my 820 but just taking the nut off doesnt work???
Taking the nut off should work. Left hand thread, remove nut and slide burr off the shaft. Watch for any washers.
They can be disassembled without breakage, simple once you have done it.
You remove the baseplate to access the internals. Then using a long screwdriver, remove the 4 screws holding the top plate to the body.
Remove top plate to access gearbox and lcd. Remove two screws at the top of the lcd at each side then lift up and out. This isn't necessary but makes it easier to remove the gearbox.
Remove screws holding the gearbox to the body then remove gearbox.
Originally Posted by noidle22
This is actually 100% right. I just went to go and check again, if you have a long star screwdriver, the top plate screws can be access from the base. Which will then give you access to the gear box.
Also, if you take the bur out from the top (IE dont dismantle the motor side) by unscrewing the left hand threaded nut. you can most likely get to the inside and clear out any stones etc that may have got in there. as per @artman aboves suggestion.
Thanks for the heads up folks.