DS Handbrake pads
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  1. #1
    1000+ Posts michaelr's Avatar
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    Default DS Handbrake pads

    Here is an unexpected problem! I got home last night to find I had zero hand brake action. I assumed a failed cable but was surprised to see something different.

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    The friction matarial on one handbrake pad has vanished! Adhesive failed and simply gone, as a result the pad/disk clearance is greater than the specified 1mm, just as well really

    I have looked in various manuals and not found how to remove the pads, only adjustment. I assume there is a peg thought the tab at the bottom of the pad... can someone give me an idea how to replace the pad? Oh and PLEASE tell me it can be done without dismantling half the front end!
    Attached Thumbnails Attached Thumbnails DS Handbrake pads-handbrake-pad_432x768.jpg  
    Last edited by michaelr; 1st February 2012 at 10:06 AM. Reason: spelling!
    Michael
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  2. #2
    1000+ Posts michaelr's Avatar
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    And now I am fearing the worst! The "Invoicing Times" pdf lists change park brake pads operation at 4.5hrs for a carburettor manual DS. It also lists the same operation on an injected BVH at 9:00 hrs!

    Anyway, mine is the former but I suspect I am going to be unable to extract the pad without getting the park brake calipers off the disks.
    Attached Thumbnails Attached Thumbnails DS Handbrake pads-park-brake_901x768.jpg  
    Michael
    Member, Citroen Car Club NSW

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  3. #3
    Administrator GreenBlood's Avatar
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    Quote Originally Posted by michaelr View Post

    Anyway, mine is the former but I suspect I am going to be unable to extract the pad without getting the park brake calipers off the disks.
    It seems nuts but I think you are right, the pad is held by the adjusting nut/bolt which you can't withdraw without lifting the caliper off the disk.

    Looking at the manual removing the caliper doesn't look too difficult but access is going to be so much easier with the guards off - and probably required.

    If it were me, I'd replace all 4 pads at the same time...

    Pics of course are required as you curse your way through this one

    Cheers
    Chris
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  4. #4
    Real cars have hydraulics DoubleChevron's Avatar
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    I've never needed to change them (when there still on the car)... there quite easy with the motor sitting on the ground beside the car though from memory (helpful aren't I ).

    seeya,
    Shane L.
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  5. #5
    Real cars have hydraulics DoubleChevron's Avatar
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    I've never needed to change them (when there still on the car)... there quite easy with the motor sitting on the ground beside the car though from memory (helpful aren't I ).

    seeya,
    Shane L.
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  6. #6
    Fellow Frogger
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    Can't you remove the handbrake calipers with the calipers in place? Getting the springs off the cable is a pain in itself. You'll want to grind down a spanner to adjust it.

  7. #7
    1000+ Posts daffyduck's Avatar
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    You can extract the radiator and possibly get the caliper free enough (Over the top of the brake disc) to R&R the brake pad. No matter how you slice it, it is going to be nasty. Might have to undo both park brake calipers to get enough freedom to work on the side you have to deal with.

    If the car has A/C and you need to work on the right hand side, you have double trouble effecting a top shelf, respectable repair.

    You can thank me now for not posting a pic of the famous barfing Betty.

    In light of that, maybe we can collectively come up with a temporary bodge job that will hold until such time as the car requires major surgery for something else.

  8. #8
    VIP Sponsor richo's Avatar
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    Michael, sorry mate, there is no easy method.
    This is the way of the D. Think of it as an opportunity to check other vitals.

    Tools
    1. Slimmed down 14mm open end spanners or Stahlwille Series 12 Electric short double open ended.
    2. To remove/replace the cable springs easily buy a Zim #122 Valve Lifter and Spring Compressor, made by Zim Manufacturing in the USA. Google it up or check eBay.
    Steve (Citroenfan) put me on to this tool a few years ago, it's cheap and you'd think specifically made for this task.Only one is required, two makes the job even easier.

    Specifications
    The clearance is 0.1mm or 0.004" between pad and disc.

    Consider maintenance of other components or replacment of other difficult to access parts on disassembly, such as lower radiator hose, radiator rubber mounts, front caliper mounting rubbers, etc.

    Hope this helps.

  9. #9
    1000+ Posts michaelr's Avatar
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    Quote Originally Posted by daffyduck View Post

    In light of that, maybe we can collectively come up with a temporary bodge job that will hold until such time as the car requires major surgery for something else.
    Well, I am fortunate that the pad with the missing friction material is plainly in view, but I am thinking that if this one has failed adhesive the others are not far behind. The friction material was quite thin but still serviceable.

    I do have one orphan pad in a box somewhere in the garage and as a temporary fix was pondering bandsawing the material off that, sliding it into place with adhesive on the back surface and clamping using the handbrake lever... it just might work! What adhesive?

    Richo, thanks for those tips. I agree that the job should be done properly and it is a great opportunity to check many other things. I just was not prepared to do it yet as I do not have other parts ready.

    Thanks to the other suggestons too, especially Shane's very helpful information
    Last edited by michaelr; 1st February 2012 at 10:25 AM.
    Michael
    Member, Citroen Car Club NSW

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  10. #10
    1000+ Posts daffyduck's Avatar
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    Well, I am fortunate that the pad with the missing friction material is plainly in view, but I am thinking that if this one has failed adhesive the others are not far behind.
    Highly doubt it. I have only seen this happen a few times in my life. This is a highly rare occurrence, right in line with something like having a camshaft shear off while removing the securing nut.

  11. #11
    UFO
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    Try this - it's about as helpful as Shane's suggestion
    Attached Thumbnails Attached Thumbnails DS Handbrake pads-a22236.jpg  
    Craig K
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  12. #12
    1000+ Posts michaelr's Avatar
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    Quote Originally Posted by UFO View Post
    Try this - it's about as helpful as Shane's suggestion
    Thank you very much, not such a bad idea. Parking a DS in gear is not a complete solution . If it has lost pressure you cannot hold it against rolling with the footbrake while you restart the motor.

    Adhesives? Phenolic resins? Araldyte?
    Michael
    Member, Citroen Car Club NSW

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  13. #13
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    I've seen a few coming away due to rusting of the backplate. I'd imagine they are bonded on with heat in the manufacturing process. If you decide to start cutting away at an old pad, consider that it may be old enough to contain asbestos. Conveniently located under the rack too!

  14. #14
    1000+ Posts michaelr's Avatar
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    Hi David, yes I am sure rust was the culprit, slowly prising the material off the steel back plate. If you remember this car was inactive for ten years so I am expecting such things. I had thought of the asbestos, but thanks for the reminder.
    Michael
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  15. #15
    Fellow Frogger! rmac's Avatar
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    Quote Originally Posted by UFO View Post
    Try this - it's about as helpful as Shane's suggestion
    Not as silly as it seems. A couple of years ago when in Cornwall I drove into a carpark where several older vehicles were parked. One had a chock under a wheel. For convenience it had a rope attached, presumably so the driver could pull it in before he drove off!
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  16. #16
    Fellow Frogger! Bruce Llewellyn's Avatar
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    Quote Originally Posted by UFO View Post
    Try this - it's about as helpful as Shane's suggestion

    Many years ago a friend of the family had a VW beetle. He took it in for a brake job via the ships' chandlers, so when he arrived at the brake place there was a 60 lb kedge anchor and 5 fathoms of chain on the left front floor...

    The mechanics' comment was that he'd left it too long to get the brakes done if they were that bad!

    bruce.

  17. #17
    1000+ Posts daffyduck's Avatar
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    Quote Originally Posted by UFO View Post
    Try this - it's about as helpful as Shane's suggestion
    Acckkk Quack!
    it's the collective temporary bodge job I mentioned earlier!

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