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Thread: Silvia (again!) group head screen SCREW arghhh

  1. #1
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    Silvia (again!) group head screen SCREW arghhh

    Gene Cafe Coffee Roaster $850 - Free Beans Free Freight
    Great to find an Auz based coffee forum!
    I have the legendary Silvia (for far to long for what I am about to admit!) and have never cleaned out the group head gasket or behind the screen - trouble is how the heck do you undo the screw - besides the obvious of course - it seems to be VERY VERY tight - or am i more of a weakling than I thought!!! ANY tips would be much appreciated as I am starting to strip the screw. Thanks in advance.

  2. #2
    Senior Member robusto's Avatar
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    Re: Silvia (again!) group head screen SCREW arghhh

    The shower screen bolt does tend to over-torque itself. If your model Silvia has a hexagonal head bolt, then its best to remove it with a socket wrench.

    If its a slotted round-head, get a stubby screwdriver with a blade which isnt too loose a fit, press it firmly into the bolt to prevent the blade slipping off and damaging the adjoining screen as you try to loosen it.

    Persevere, but be careful.

    When you have removed it and scrubbed the screen -- therell be a lot of black gunk in there---replace the bolt finger tight only. Thats all it needs.

    Good luck,
    Robusto

    .

  3. #3
    Senior Member Lovey's Avatar
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    Re: Silvia (again!) group head screen SCREW arghhh

    Gday Highalt,
    If your Silvia doesnt have a hex nut, you might find it easier when following Robustos advice if you turn the machine over. You can put more pressure on the screwdriver, and youll have a lot more control over it, plus its easier to see what your doing.
    If you do happen to strip the screw head, youll have to use a pair of locking pliers.
    If you dont know what they look like, have a look at this link:
    http://www.justtools.com.au/prod974.htm.
    Good luck with it.

  4. #4
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    Re: Silvia (again!) group head screen SCREW arghhh

    If you cant get the grub screw undone and there is the real possibility of damage to it (as in rounding off the head or destroying the screw drive slot)) so it wont come undone anyway, I can talk you through a way that *should* get it undone but will necessitate you "sacrificing" the shower screen.

    Thats not a problem, because you can buy a new shower screen & screw it straight back on.

    My method is the same no matter whether you are dealing with a round headed screw, or a bolt head.

    Before we get to that however, may I say it will be easier for you to use a socket to get it undone (if it is the current bolt head arrangement), as that gives much much better "purchase" by gripping all sides of the bolt head, than using a spanner or shifter because they only grip 2 sides of the bolt head.

    When you eventually get it all off and screw it back in, do it up firm but not tight. Youll know what I mean when you do it...you stop screwing it up when the grub screw simply stops turning, & do not proceed to tighten further.

    Good luck,
    FC.

  5. #5
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    Re: Silvia (again!) group head screen SCREW arghhh

    Thanks all for your encouragement! - I had a good go at it this morning with a short screwdriver that i could also fit a shifter on and got it undone YIPEE!! - about two years of gunk inside that Silvia could well do without. Cleaned it all up and the improvement in taste is just sensational - i will make a habit of it in future. Now - on to this backflushing business........

  6. #6
    Senior Member
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    Re: Silvia (again!) group head screen SCREW arghhh

    NIce one Highalt..!
    ive only owned my silvia for around 6 months, the gunk i have seen built up after 1 months use is scary.... i can only imagine what your system looked like.

  7. #7
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    Re: Silvia (again!) group head screen SCREW arghhh

    Behmor Brazen - $249 - Free Freight
    I tend to updose and after about 10 days (~ 50 coffees) its black as.

    - Rob



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