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UncleP
Monza


Joined: 27 Feb 2019
Posts: 168



PostPosted: Sun Jan 26, 2020 9:57 pm    Post subject: Stuck C4 strut bolts Reply with quote

What's the secret to getting these out?

Complete hub and strut assembly is now off the car. The nuts are off the bolts but the bolts seem to have welded themselves in solid. So far I've hit them with fire, plusgas, mallets, tried pressing them with a big clamp and a vice, have thrown every swear word known to man yet they just sit their sticking 2 little rusty fingers up at me.

Who has managed to get these things shifted?

PS. if yours came out easy please don't post as it will only make me angrier.
 
  
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911munKy
Montreal


Joined: 26 Nov 2014
Posts: 585



PostPosted: Sun Jan 26, 2020 10:15 pm    Post subject: Reply with quote

Sounds the same as mine when I did my suspension a few years ago, I can’t actually remember how I removed them in the end (probably erased from memory to avoid PTSD) but I’m pretty sure it would have involved an angle grinder and a breaker bar at some point.
If nothing seems to be working admit defeat and take the whole strut to a garage to undo it, shouldn’t cost much.
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2000 C2 996
 
  
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Paynewright
Monza


Joined: 17 Apr 2018
Posts: 241
Location: Nr Lutterworth Leics


PostPosted: Mon Jan 27, 2020 7:36 am    Post subject: Reply with quote

Bolt locking onto the hub or the top nut holding the spring on?

When I fitted my new shocks the top mount had siezed on and had to be sawn off!!

Ian
 
  
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UncleP
Monza


Joined: 27 Feb 2019
Posts: 168



PostPosted: Mon Jan 27, 2020 8:53 am    Post subject: Reply with quote

It's the bolt that holds the strut in the hub carrier.

I think I might try sticking the welder on the end of the bolt to put serious heat through the bolt.

I read that penetrating oil isn't much use on a steel/Ali corrosive bond. So wondered if anyone found a secret potion that works. Read everything from ammonia, caustic soda to strong tea and vinegar.
 
  
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DarthFaker
Trainee


Joined: 13 Jun 2019
Posts: 93
Location: 1999 Carrera 4 Aerokit


PostPosted: Mon Jan 27, 2020 12:19 pm    Post subject: Reply with quote

Longer breaker bar, heat, oil, cursing more heat and repeat. It will budge eventually.
 
  
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deMort
Dijon


Joined: 21 Mar 2015
Posts: 7848
Location: Brighton


PostPosted: Mon Jan 27, 2020 7:47 pm    Post subject: Reply with quote

link rod top arm / bolt .. there is a 17 mm nut behind the ball joint .. i cut the ball joint off to leave just the nut ..

A very powerful airgun and undo / do up .. rinse and repeat many times .

i've never tried too much heat .. and a hot air gun doesn't make any difference .. a penetrating oil is useful but to a small degree .. it won't get into were its corroded i'm afraid .

If no joy then perhaps take the whole lot to a garage and get them to sort it ..

They are a pain at best .
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911munKy
Montreal


Joined: 26 Nov 2014
Posts: 585



PostPosted: Mon Jan 27, 2020 9:20 pm    Post subject: Reply with quote

^
I now remember how I undid it after Demorts post, I too cut off the ball joint with an angle grinder and used a breaker bar and impact socket on the nut with loads of Plus gas. Finally got it spinning then spent ages to loosen it further and remove. I bought myself an impact gun afterwards as I don’t want to be in that situation again although having said that I don’t think a battery Impact gun would have undone the bolt initially just speeded up removing the spinning bolt once loosened. Good luck, luckily the other side wasn’t quite as bad.
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UncleP
Monza


Joined: 27 Feb 2019
Posts: 168



PostPosted: Mon Jan 27, 2020 10:58 pm    Post subject: Reply with quote

It's a C4 so the bolt is a little different from a c2. It's just a pinch bolt and not connected to the drop link in anyway. The nuts are off, whipped those off with a big DeWalt gun (1600nm allegedly, whips the 32mm hub nut off like it's finger tight).

I used the gun going forward and back and ended up rounding a bolt head but still no movement. I'll have another go and they still don't shift I'll take to a garage for a big press.
 
  
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