Snapped bolt, front hub
Snapped bolt, front hub
Author
Discussion

Heaveho

Original Poster:

7,472 posts

204 months

Tuesday 15th September 2020
quotequote all
Hi, as title. I've snapped the bolt that holds the front brake caliper brake line bracket to the hub. I can see what I'm going to be faced with, just wondering if anyone else has done this and can help make my life easier when I have a go at it tomorrow. This is on an '05 987 3.2S.

Thanks in advance.

LennyM1984

1,129 posts

98 months

Tuesday 15th September 2020
quotequote all
Welcome to the club! I drilled mine out (rear upright) and just put a nut and bolt through it. It was thoroughly tedious

tozerman

1,340 posts

257 months

Tuesday 15th September 2020
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Will be a stty job with either screw extractors and/or a drill!
When you get it out do what I did and replace it with a small M6? Stud and some thread lock.
Got a picture somewhere but don't know how to post them up on here any more...
Good luck

Andyoz

2,925 posts

84 months

Tuesday 15th September 2020
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Out of interest, did it snap when you were taking it out or putting it in?

I recently did my front calipers and was OCD about torque values but I suspect that's not enough the older they get. I was surprised how relatively low the recommended torque setting is on that bolt.

Megaflow

11,521 posts

255 months

Tuesday 15th September 2020
quotequote all
Glad it’s not just me... paperbag

I drilled it out and re tapped it.

Heaveho

Original Poster:

7,472 posts

204 months

Tuesday 15th September 2020
quotequote all
Andyoz said:
Out of interest, did it snap when you were taking it out or putting it in?

I recently did my front calipers and was OCD about torque values but I suspect that's not enough the older they get. I was surprised how relatively low the recommended torque setting is on that bolt.
I was trying to undo it. I had planned to replace it with a stainless copaslipped allen bolt with a split and flat washer, which is generally what I do when removing and replacing stuff. That way the torque value doesn't matter so much, as the split washer tends to stop things from coming loose. It's only for the brake line bracket, so doesn't need much on it.

Andyoz

2,925 posts

84 months

Tuesday 15th September 2020
quotequote all
Heaveho said:
I was trying to undo it. I had planned to replace it with a stainless copaslipped allen bolt with a split and flat washer, which is generally what I do when removing and replacing stuff. That way the torque value doesn't matter so much, as the split washer tends to stop things from coming loose. It's only for the brake line bracket, so doesn't need much on it.
Yes, lots of lads just screw it "as tight as it will go"...can then lead to issues years down the line when some bugger has to unscrew it...

Heaveho

Original Poster:

7,472 posts

204 months

Wednesday 16th September 2020
quotequote all
Well, it's out. I bought a helicoil kit, and it was pretty straightforward. I've decided to threadlock a stud in there and use a nut so if it has to come apart again, I won't be faced with this crap. Off to find a German to slap now!

Jim1556

1,838 posts

186 months

Wednesday 16th September 2020
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If in doubt, wirelock it. I fix helicopters for a living, some motorsport engineers do this to critical components - if it's not coming off for a while, it's an easy (with practice) fix...


Heaveho

Original Poster:

7,472 posts

204 months

Thursday 17th September 2020
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Yeah, we used to do it with the bike when I was briefly trying my hand at proddy racing 600s. Calipers and sump bung were priorities. Don't want to go that far on my road car, to be honest. In this instance, I'm pretty happy that a threadlocked stud, with a nut on a split washer will suffice.