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Thread: Disc Caliper Metal Retaining Rings

  1. #1
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    Disc Caliper Metal Retaining Rings

    Good evening all,

    I recently put new seals through the RHS disc caliper (AP Lockheed) on my '84 110. The job was straightforward until I had to put the new seal retaining rings in - they were certainly a test of my patience! I found that i had to reuse two of the old ones (still in good nick) as they were a smidgen narrower than the new ones.

    I'm wondering if it is even necessary to replace the retaining rings? Can i simply leave them in place and slip the new seals in behind, then push the greased caliper piston in?

    Thank you,

    Edward

  2. #2
    Join Date
    Jan 1970
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    The metal ring holds the outer rubber dust seal.

    I found that you need to make sure that the groove in the caliper is super clean so focus on this before trying to fit the metal ring. Use a blade of a small screwdriver to carefully clean out the groove.

    The metal ring needs to be pushed in with your fingers first, then gently tapped in. I often use the handle of a shifting spanner.

    I never split the caliper when changing seals

    Good luck
    Andrew
    1998 Landrover Defender 300Tdi 130 HCPU Expedition
    1972 Peugeot 504 Sedan - Daily Driver

  3. #3
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    Thanks Andrew. You make it sound so easy, but for some reason mine were anything but! I wonder if my new rings were very slightly oversize? I believe they were a good brand (it said genuine OE on the box, made in the UK by Liberty). Like i said, i had to reuse two of the old ones, which pushed in a lot better.

    Edward

  4. #4
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    This is the brand of my kit (image from Google).
    Attached Images Attached Images

  5. #5
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    I have come across those rings falling out of rebuilt calipers, twice in a row, two different rebuilders. My advice would be to leave them in place and slip the seals past them.

  6. #6
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    I had problems with this when I did up my callipers years ago. Needed to re-use some of the older retainers.

    There are threads on this site with info if you have a look such as this one:

    servicing Brake Calipers , "How to"

    DL

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