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Any car mechanics in?

Community Veteran
Posts: 6,586
Thanks: 206
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Registered: 16-02-2009

Any car mechanics in?

I have an issue with a seized calliper slider, I have just replace both disc's on my Laguna, but the slider on the NS lower is completely seized up, I had a similar issue with the OS one but managed to free it, using a brute force and a spanner, then replaced it with some grease.
I have tried:-
Hitting it with a hammer
Swearing at it - no luck there  Cry
Using a spanner and hitting the spanner with a hammer - broke the spanner!
WD40 on it
Socket on it and loads of force back and forward - no luck
So next is ?
12 REPLIES
Community Veteran
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Registered: 18-01-2013

Re: Any car mechanics in?

Massive amounts of Plusgas (or WD40) and soak overnight / weekend with liberal redoses
Blowtorch + hammer
*Edit - and if that doesn't work, secondhand caliper.
Community Veteran
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Registered: 01-08-2007

Re: Any car mechanics in?

I had a similar problem last year with a bolt that was stuck in the sliding pin / tube.
Took it to one of the local mechanics and asked them to press it out with a hydraullic press. If its stuck in there that hard that you can't shift it with hammers and swearing, it'll need pressing out with a hydraullic beast instead. They charged me £2 so I gave him £4 (oh yeah, that counts as a tip I just realised lol).
Only takes a couple of minutes for them to do it assuming they've got the right metal blocks and access etc.
I need a new signature... i'm bored of the old one!
Community Veteran
Posts: 6,586
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Registered: 16-02-2009

Re: Any car mechanics in?

OK will try tomorrow with a new can of WD40 in to it.
I replaced the disc's because the outer disks (both sides) was NOT showing any sign of the brake being applied to it. Looks like I might have gotten away with a skim and freeing the sliders!
Ahh the joy's of a new car!
I am brewing tomorrow, but will fit it in between Mash and boil  Wink
Community Veteran
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Re: Any car mechanics in?

I don't think WD40 is going to do much for you HB. Either try that plusgas (good luck finding it lol) or get it pressed if possible (guaranteed to do the job).
I need a new signature... i'm bored of the old one!
Community Veteran
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Registered: 24-09-2008

Re: Any car mechanics in?

You could try boiling it in water. Boiling a seized nut and bolt will expand the nut faster than the bolt making it easier to free.
Community Veteran
Posts: 6,586
Thanks: 206
Fixes: 14
Registered: 16-02-2009

Re: Any car mechanics in?

Hmm issue is nearest place to get it pressed is driving distance!
I can probably get a replacement calliper from the scrappies, but that includes everything I just need the shell.
Will try everything else before I need to spend more (non existent until the IC pays out) money.
So far this car has cost me:-
replacement disc's £45
replacement gas struts (scrappie) £18
Time - well lots of that for free!
I will try soaking it in WD40 etc tomorrow and heat on Sunday (if weather holds) then I will look at getting a replacement.
Community Veteran
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Registered: 18-01-2013

Re: Any car mechanics in?

As a last ditch resort, heat up the caliper and pour cold water onto the slider - hit straight away and with a bit of luck the differences in expansion will do the rest for you.
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Re: Any car mechanics in?

I've had success with a blow lamp, an oil can and a hammer many times over the years.
Get plenty of heat in the offending area, smother it in oil and hit it with the hammer.
The heat thins the oil and the cooling effect draws the thin oil into the gap.
I'm surprised they don't fit mini rubber gaiters to the slide bolts.
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Community Veteran
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Registered: 21-03-2011

Re: Any car mechanics in?

How about one of these: http://www.thinkgeek.com/product/e2dc/ ?
Now Zen, but a +Net residue.
Community Veteran
Posts: 6,586
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Registered: 16-02-2009

Re: Any car mechanics in?

There are mini gaiters fitted to them.
Community Veteran
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Re: Any car mechanics in?

So HB did you get this sorted matey?
I need a new signature... i'm bored of the old one!
Community Veteran
Posts: 6,586
Thanks: 206
Fixes: 14
Registered: 16-02-2009

Re: Any car mechanics in?

I took it to a local mechanic in the end and he freed it up for me. £20 lighter but I couldn't move it.
Now looks like my "fix" on the ns has seized again, had smoke from it on a long journey this morning. Will need to get some copperslip to put on it.