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Thread: Clutch replacement CDTi

  1. #1
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    Default Clutch replacement CDTi

    Morning all,

    My dads vectra estate needs the clutch changing and was wondering if its best to change the slave cylinder & flywheel too? Its making a whirring noise and its starting to slip a little.

    Thanks

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    Default

    Also how can I tell if its got a f40 or m32 gearbox. Its a 2004 vectra 6spd manual BTW

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    Default

    All 1.9s have the F40 box.
    Its a good idea to change the CSC (concentric slave cylinder) whilst the box is off.
    Note when bleeding the clutch its recommended not to use pressure bleeding systems the old two man open bleed valve, press clutch slowly then close valve etc is the way to bleed these.
    As far as changing the DMF; these have caused some issues and whilst expensive I believe it would be a false economy not to change it if you intend to keep the car due to the labour involved.

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    Default

    You may find that it's the DMF that is 'slipping' and making the whirring noise.DMFs have a built in friction clutch that is designed to 'save' the gearbox from excess torque.Once the friction clutch starts to 'let go' it's all downhill from there I'm afraid.

    http://www.standardtransmission.com/dmf.html

    "Friction Ring -The friction ring located between the inner and outer flywheel is designed to allow the inner and outer flywheel to slip. This feature saves the transmission from damage when torque loads exceed the vehicle rating of the transmission. The friction ring will wear out if excessive torque loads are continuously applied. Loading the vehicle beyond the rated load capacity is often the root cause of friction ring failures in DMF's."

    If you do lots of towing or carry heavy stuff in your estate or you have it 'tuned' in any way then there is the likelihood of either the DMF or the clutch (or both) being worn.

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