Question about Gaggia MDF Coffee Grinder

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Can't disasseble burr set

I have had my Gaggia MDF grinder for about 15 years and it has always worked well (use it virtually everyday). Over the last few years I've had the grind setting set to 4 and it became stuck on 4. I can't turn it either way. I managed to fully disassemble the grinder but still can't remove the theaded piece that controls the coarseness of the grind and which would give me access to the burr set. I took the machine to a Gaggia authorized service center here in California and the technician was unable to remove it either and just gave up (!?).

Any suggestions?

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  • lfvalente Apr 04, 2009

    I should have posted this before, but I totally forgot. I managed to solve the problem as follows:



    - Got an 8ft long 2x4 (not kidding)

    - Attached to one end a hinge from a large garden/driveway gate. The hinge has two triangular plates with holes to screw them to the gate and the gate post respectivelly. I screwed one end to the 2x4. I sawed off part of the other end so that it would fit just right into the grooves of the upper holder (#13 in the parts diagram you sent).

    - I then secured the grinder on a workbench (a big vice will do but be careful not to damage the housing) and used the 2x4 as a huge lever to turn the upper holder. In my case, it still didn't work and ended up bending the 1/4" thick hinge.

    - I then decided to turn the grinder upside down and immerse it in a solution of cleaning powder used to clean (backflush) espresso machines). Used boiling water and let it sit for about 1 hour, Be careful to only immerse the top holder and not to get any water into the electrical motor.

    - Repeated the previous step and it worked like a charm!



    If any one needs pictures of the 2x4 setup I could take one and send you.

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Take an oil filter remoover for cars(the model with 3 legs and gears will do better job). 2 man required one holding grinder other one start turning left and right the upper holder(during turning hold down the brake pin.) it is bit boring and job wich requires patience. but i think you will manage it

here is the diagram:
http://www.partsguru.com/images/Img844.jpg


Posted on Apr 04, 2009

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