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      04-07-2018, 06:25 AM   #23
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Quote:
Originally Posted by Chappers 71 View Post
Well according to BMWs computer they sold me the correct part. So I showed the parts guy pics of the working bolt/slider pin & they are going to email head office.
In the meantime I have brakes that are feeling a bit 'snatchey' & a bit of judder,
Pic of the wrong pin
That looks to be the correct part.....
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      04-07-2018, 07:36 AM   #24
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Originally Posted by mjn77 View Post
That looks to be the correct part.....
I agree it does look right, except the bottom section doesn't slide & rotate.
The parts guy said it may be a manufacturing issue, I guess I will have to wait & see what BMW GB come back with.
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      04-07-2018, 12:39 PM   #25
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Quote:
Originally Posted by Chappers 71 View Post
I

I agree it does look right, except the bottom section doesn't slide & rotate.
The parts guy said it may be a manufacturing issue, I guess I will have to wait & see what BMW GB come back with.
Are you talking about the longer pin sliding and rotating? The pin should look and behave as a single piece. It shouldn't be coming apart when installed.
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      04-07-2018, 01:12 PM   #26
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Originally Posted by dragerboy View Post
Are you talking about the longer pin sliding and rotating? The pin should look and behave as a single piece. It shouldn't be coming apart when installed.
It doesnt come apart, see posts #4 & #5
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      04-07-2018, 04:10 PM   #27
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Quote:
Originally Posted by Chappers 71 View Post
It doesnt come apart, see posts #4 & #5
Ok what I meant was it shouldn't be doing what its doing in post #4 and #5.
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      04-07-2018, 04:25 PM   #28
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Quote:
Originally Posted by dragerboy View Post
Ok what I meant was it shouldn't be doing what its doing in post #4 and #5.
Maybe, although I have changed the front pads a number of times during over five & half years of ownership and the bottom pins/bolts have always been that way, now I have a brake issue on the same brake that the pin no longer moves on.
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      04-07-2018, 04:27 PM   #29
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Anyone with a 06 335 fancy taking out their bottom slider pins & Posting what you find?
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Last edited by Chappers 71; 04-07-2018 at 04:45 PM.
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      04-07-2018, 04:31 PM   #30
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Quote:
Originally Posted by Chappers 71 View Post
Anyone with a 335 fancy taking out their bottom slider pins & Posting what you find?
I mentioned before, my 09 build year 335i has solid pins.
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      04-07-2018, 04:43 PM   #31
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Originally Posted by david in germany View Post
I mentioned before, my 09 build year 335i has solid pins.
Yeah thanks, maybe they were different on the early ones 06?
It's just strange that the pins on mine have always been this way. If they weren't meant to move they would surely have been made from one piece of high tensile steel, why go to the expense of designing a two pice part?
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      04-07-2018, 05:09 PM   #32
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I've worked with about 6 pairs of 335 calipers from early to late and as stated above solid pins. Perhaps they are manufactured like this for a reason and yours have just degraded or failed.
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      04-07-2018, 05:17 PM   #33
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Originally Posted by dragerboy View Post
I've worked with about 6 pairs of 335 calipers from early to late and as stated above solid pins. Perhaps they are manufactured like this for a reason and yours have just degraded or failed.
Anything is possible, although it'd mean that both sides have been faulty for 56,000 miles & one of them has now fixed itself.
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      04-07-2018, 05:32 PM   #34
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Quote:
Originally Posted by Chappers 71 View Post
Anything is possible, although it'd mean that both sides have been faulty for 56,000 miles & one of them has now fixed itself.
Lol these Germans are very clever. Its certainly an odd one but the only thing I can imagine happening to yours is they get debris in the gap and that would hinder the movement.
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      04-07-2018, 05:41 PM   #35
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I soaked that pin in penetrating oil for an hour, then held one end in a vice with a clamp on the other & couldn't move it.
Will have to wait & see what BMW GB come back with.
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      04-07-2018, 06:05 PM   #36
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Something just occurred to me. If these even are two piece guides, if they are properly torqued to spec there is no way they could possibly move in any way regardless of how they are built.

They are not made to slide, or spin. Just put them back in the car and be done with it.
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      04-07-2018, 06:16 PM   #37
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Quote:
Originally Posted by david in germany View Post
Something just occurred to me. If these even are two piece guides, if they are properly torqued to spec there is no way they could possibly move in any way regardless of how they are built.

They are not made to slide, or spin. Just put them back in the car and be done with it.
Ha, yes it would seem you are right, that means there's a different issue with the brakes
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      04-07-2018, 06:19 PM   #38
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Quote:
Originally Posted by Chappers 71 View Post
Ha, yes you are so right, that means there's a different issue with the brakes
Exactly.
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      04-09-2018, 12:04 PM   #39
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Quote:
Originally Posted by Chappers 71 View Post
Ha, yes it would seem you are right, that means there's a different issue with the brakes
How you getting on with this mate? If it wasn't for the machine saying the rotor was unbalanced I would have suggested checking the front control arms as they also cause the wheel to wobble back and forth slightly also causing the steering wheel to shake.
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      04-10-2018, 01:38 PM   #40
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All sorted, I replaced both bottom sliderpins/bolts, the new ones don't have a sliding outer sleeve so it would appear that both of my bottom pins have not been right the whole time I've owned the car, although as David in Germany pointed out, once they are fitted & done up they shouldn't slide anyway. I took out the pads and cleaned everything up. I also invested in a torque wrench and tightened everything to spec, previously I'd just tightened everything up with a socket bar & given it a clump or two with a mallet
So I can't put my finger on what was actually wrong & what I did that sorted the issue but all is good now.
Thank you all for your input
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      04-11-2018, 04:21 AM   #41
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Great!

I absolutely love my torque wrench, just gives you piece of mind i think!
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