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Thread: Brake Calliper Help?

  1. #1
    Regular Member Digital_kid's Avatar
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    Default Brake Calliper Help?

    Hi I have a 2.2 SRI Vectra C on an 02 reg and its just failed its MOT on the offside rear calliper.

    Aparently the brake is ok but there is no handbrake working is this a new calliper or can I free it somehow?

    If its a new calliper anywhere I can get a cheap one?

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    probably just seized, free it up with a rubber mallet, srtip it and use some copperslip grease. The moving calliper can stick, especially with salt from the road and if its not used for a while.

  3. #3
    Regular Member Digital_kid's Avatar
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    Thanks Rob,

    When I strip the caliper down is there 2 pistons one for the handbrake and one for the brake?

    Just so I know if I have it working as the brake is fine?

    L.

  4. #4
    Admin plasma's Avatar
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    Vehicle : Vectra

    Trim : SRi

    Engine : 150

    Year : 05

    Mileage : 74000

    Default

    not 100% but i believe its just one piston.. With the handbrake cable actuating the piston via the back of it. Mark GSi will know for sure though.

    Gonna run out and see wot i can see...

    edit: Not a lot i can see.. It does look like it actuates something internal to the caliper which then operates the piston

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    yes 1 piston need to tap it from one side to the other to free it up. Easier with the caliper off the disk then you can see it move. Might just need a few taps.

  6. #6
    Ex Vec-C Admin & Founder GARY3306's Avatar
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    The handbrake and the service brake work the same caliper, therefore if it was a seized caliper it would effect both the handbrake and the service (foot) brake, ie they would both have low braking effort. Get somebody to sit in the car and work the h/brake on and off while you watch the operation of the cam lever on the back of the caliper (the bit that the cable connects to) I think you might find that the cable is either seized, snapped or stretched on that side. You could however have an internal fault with the cam in the caliper and this will be indicated by the cable operating the lever properly when you get your mate to work your handbrake. HTH
    [SIGPIC]VX<font color=Red>R</font> with added Courtenay <img src=https://www.vectra-c.com/forum/images/smilies/biggrin.png border=0 alt= title=Big Grin class=inlineimg />

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    Regular Member stickshift's Avatar
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    Default

    I had exactly the same problem with mine and was also brought to my attention at MOT time but the examiner was a bit more sympathetic and let it go. I was in the process of looking for a new one when it suddenly started to work again! It's been as good as gold ever since. You might be lucky too but it might be as simple as winding the piston back and reseting the self adjuster.

    Here's a couple of links that might help.

    http://www.vectra-c.com/forum/showthread.php?t=10499

    http://www.vectra-c.com/forum/showth...just+handbrake

  8. #8
    Regular Member Digital_kid's Avatar
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    oo flip sounds like a common problem better keep some old aircraft chocs in the boot!

    I think i'll try the common, "yank the handbrake up a couple of times" trick if not ill take the caliper off mares well change the pads at the same time.

    Hey is there a clever way of telling if its working - jack it up and spin the wheel maybe?

    Thanks again lads,

    L.

  9. #9
    Regular Member Digital_kid's Avatar
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    Default

    ok took the wheel off this morning and the handbrake lever on the caliper had seized, give it an encouraging tap and now it moves.

    Heres the thing when it was jacked up and I tapped the arm closed the wheel spun (all good) when I pull the handbrake on the wheel locked (all good to!) but when I release the handbrake the wheel spins but there is slight resistance not much (is this right?) Just didnt want to drive along with the brake on!

    Also when I brake there is now a creaking spring type noise coming from the caliper should I spray the caliper with WD40 (just the arm bit)?

    Thanks again folks.

    L.

  10. #10
    Regular Member Gsi3.2's Avatar
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    slight resistance is to be expected, and yes, it is okay to oil the pivot lightly to free it, but use some spray grease to give it some long term protection against seizing again..

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