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24th September 2019, 11:59 | #1 |
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Rover 75 Saloon Join Date: Apr 2019
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Brake calipers - getting the pistons out
Do the pistons/seals come out easily - or should I press the brake pedal and force them out while the calipers are still on the car (but not on the discs).
I'd like to take the route of least possible spillage. |
24th September 2019, 12:10 | #2 |
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Rover 75 Saloon Join Date: Jul 2011
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Not done Rover 75 but Rover SD1, try and remove the pistons while on the car but there will be spillage. I've also used compressed air to move the pistons detached from the car but then I have a reasonable three phase compressor.
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24th September 2019, 12:25 | #3 | |
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24th September 2019, 12:29 | #4 |
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I don't have anything to provide compressed air.
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24th September 2019, 12:34 | #5 | |
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Quote:
The pistons won't come out if I try it off the car then (without compressed air)? |
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24th September 2019, 14:03 | #6 | |
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Quote:
Or someone else might have other ideas ... Regards |
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24th September 2019, 14:15 | #7 |
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I’ve always use compressed air to remove them but, I’m sure a foot pump would provide enough ‘wind’ if you could connect it to the caliper in some way
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25th September 2019, 13:28 | #8 |
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As they are only single piston it's easiest to just push them out using the hyrdraulic pressure of the braking system. Arrange something to catch spillage, a bucket perhaps? do them one at a time if you need to do more than one. For each one pushed out you'll then have to securely blank off that brake hose to withstand pressure before moving to the next. Alternatively off the car and drained use a high pressure airline (take it to the garage and use theirs).
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25th September 2019, 15:28 | #9 |
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Doing them off the car is probably the best bet. With the hoses clamped up fluid loss will be at a minimum.--
That means much easier when re-installing everything. No mess at home or buckets or anything if you go to a garage. Can't cost much as it will only take them a few seconds with compressed air.--- You know it makes sense.-------- Go now. |
25th September 2019, 17:58 | #10 |
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I found i was able to use a big screw driver to lever out the piston from the inside lip. It takes a few goes, but there is a kind of lip that surrounds the internal rim. The exposed side, not the shiny side with the seals in. You can lever that out bit at a time. I didnt use any air or any pressure to do it.
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