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      06-05-2023, 04:12 PM   #147
aboulfad
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Drives: 2015 M4 MG/SO
Join Date: Mar 2014
Location: MTL, QC

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2015 BMW M4  [10.00]
Quote:
Originally Posted by D_SheerDrivingPleasure View Post
If I were local I would love the opportunity to give that pin a good thwack with my punch tool and hammer. See if BMW allows you to observe the service tech removing it. Maybe ask for a video. I just can't imagine how it's siezed.
Thanks… I have a good set of punch tools and a 32oz hammer. The fact that the pin’s head is flattened indicates it isn’t budging. My theory is the ring on the one side most likely fused with the Caliper inner hole body and on the pin itself. This is the first brake job on my 2015 , brake dust, salt, snow, dirt, water over the years.

If mechanical force can’t dislodge it, then it’s heat, spray, hit… I am sure that’s what the mechanic will do. Unless by that time the penetrating oil does it’s magic & they pop out

PS: my theory seems to be correct, our friends at MB also have the same issue with these guide pins.
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Last edited by aboulfad; 06-06-2023 at 05:47 AM..
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