2004 E46 320d, Cleaning Brake Calipers

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  1. 2004 E46 320d, Cleaning Brake Calipers
    #1
    BMW Crazed
    Car Details
    D-Sport's Car Details
    Model of Car:
    320D Sport
    Year of Manufacture:
    2004
    Transmission Type:
    Manual
    Car Body Type:
    Saloon
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    Is there any way of externally cleaning the brake calipers without taking them off the car? Just wondering as I'll be changing my discs and pads shortly and might want spruce up the calipers a little!
    To do: Far too much.....

    Me: 04 E46 320d Sport in Titan Silver

    The Mrs: 59 E92 320d Sport in Space Grey....now replaced by a 61 plate Z4 2.0L S-drive M-Sport in Deep Sea Blue with beige leather

    I'm just a lottery win away from that 335i.........and a Series 3 Discovery..........and an old Mini.........and an E30 325i........

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  3. #2
    BMW Master
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    mark beardmore's Car Details
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    m3
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    1994
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    coupe

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    Yeah its called brake cleaner!

  4. #3
    BMW Fanatic
    Car Details
    duffsparky's Car Details
    Model of Car:
    E46 318i SE Touring
    Year of Manufacture:
    2001
    Transmission Type:
    Manual
    Car Body Type:
    Touring

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    I don't recommend this method but I've used 'spirit of salts' on mine, it brought them up a treat. I only did a small area at a time with an old tooth brush, Colgate vibrating ones were good, and flushed with plenty of clean water after working each small area.

    I was very very careful, as 'spirit of salts' is hydrochloric acid, and even more CAREFUL NOT TO BREATHE IN THE VAPOUR 'COZ IT ATTACKS THE THROAT AND LUNGS. I chose an extremely well ventilated space to work, forced ventilation was best, a windy day worked but not gusty as the vapour would blow back over me. I wore gloves, googles, some old clothes and oh! a respirator.

    It took a few applications to get all the c**p off in stubborn areas, but I was down to bare metal in no time. I found re-application worked best when the surface was dry, I used compressed air for this after flushing with plenty of clean water. Then I neutralized any acid remnants with a solution of salt water and reflushed with plenty of clean water.

    I don't know if the 'spirit of salts' would of attacked the seals, hoses and sensor cables as I did mine stripped down off the vehicle, but I believe a good application petroleum jelly would protect those parts.

    Like I said at the beginning I don't recommend this method; it could be dangerous to anyone involved and may also damage the vehicle braking system.

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