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W204 front & rear brake disc & pad service replacement

Discussion in 'Suspension, Steering & Brakes' started by smurph1, Oct 9, 2018.

  1. smurph1

    smurph1 New Member

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    Your Mercedes:
    A180
    Looking to do this myself, with little prior knowledge of this car...a 2012 C220.

    Can anyone please point me to any online written instructions/threads?

    Was thinking of an eBay kit with discs and pads, but contains little else for the DIYer.

    So, can anyone confirm any extra parts or special tools/grease/spares that would be required?

    Or is there a kit somewhere has the lot?
     
  2. steveq

    steveq Senior Member

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    Your Mercedes:
    2011 Merc S212 E220CDI Estate; 2011 Merc W204 C220 CDI; 1965 W113 Merc 230SL Pagoda
    Hi,

    To change the pads you will need male torx sockets to undo the bolts holding the calliper onto the bracket.

    The change the discs, you will need a breaker bar or similar as the bolts on the mounting bracket are very tight. On my W204 C220 they are 18mm size bolts.

    On the rear you will need to slacken off the parking brakes to get the disc off. Plenty of youtube videos to show how that is done.

    You will need an allen/hex key to undo the screw holding the discs in place.

    You will need a wire brush to thoroughly clean any rust off the hub where the disc sits. Any slight imperfection there will cause a vibration/wobble similar to warped discs.
    You will also need to apply some copper/ceramic grease where the disc sits on the hub.

    You will also need a decent jack and axle stands.
     
  3. EmilysDad

    EmilysDad Senior Member

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    smurph1 likes this.
  4. Yugguy

    Yugguy Senior Member

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  5. AnthonyUK

    AnthonyUK Senior Member

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    Your Mercedes:
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    If you can't remove the retaining screw holding the disc on you might need to drill it out too.
     
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  6. steveq

    steveq Senior Member

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    This should have said that it is a torx screw.
    You may need to put some easing oil onto it t get it undone.
     
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  7. thebiglad

    thebiglad Senior Member

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    My new front discs came yesterday so this afternoon I decided they were going on.

    The calipers came off easily as I'd put new pads in last week, the carriers were a bit more of a challenge but eventually they did yield.

    However, that bastard little torx screw (lhs) would not budge no matter what I tried - so eventually with a collection of drill bits I was able to get shot of the little 'b'. The rhs side one was attacked with vigour and eventually gave in, making it much easier.

    Now got shiny new Brembos on the front and will soon do the rears. You should have seen the state of the ones I took off - APPALLING !!!!
     
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  8. AnthonyUK

    AnthonyUK Senior Member

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    Your Mercedes:
    C240 estate 2002
    I like Brembo as they are good quality and come with replacement screws/bolts etc.
     
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  9. OP
    smurph1

    smurph1 New Member

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    Ok, thanks for your input guys, have most including hex keys, and copper grease, et.
    Seems i just need a male torx fitting (anyone which size)?
    Can anyone suggest any other spares?

    Anyone know why i'm not getting emails alerts, eve though setup to do so?
     
  10. Wighty

    Wighty Senior Member

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    Have you got brake pad wear sensors?
     
  11. Brizzle

    Brizzle Senior Member

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    Your Mercedes:
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    I'm doing my front discs and pads this weekend (if the rain lets up). Do the caliper pistons just push back or do they have to be screwed in?
     
  12. AnthonyUK

    AnthonyUK Senior Member

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    Just pu
    Just push back. Those twist and push are a royal pain.
     
  13. Brizzle

    Brizzle Senior Member

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    Cheers Anthony, I'm pleased to hear that :)
     

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