Induction heating tool

[alanann]

I need to dismantle the rear suspension to change the offside CV joint but have got a few seized nuts and bolts,

I am thinking of getting a induction heating tool and wonder has anyone used one of these tools to heat corroded bolts 

do they work and would it loosen bolts that are seized in the bushes

I don't have heating torch available so my only other option is the grinder but i would prefer not to cut up suspension arms if possible.

This is the type of tool I am considering.

 

[Herbie]

I know it's an advert from Banggood but the video answers your question - yes, they work well and there's plenty of other videos of them in real-world use on YouTube.

Sorry, can't answer the other question.

 

[alanann]

Thanks 

I've seen videos but they all just show a bolt or a rusty nut getting heated I was hoping someone might have used one to remove seized bolts in the bush steel liners.

[Herbie]

I've never used one but I would imagine that their primary purpose is to heat the nut, which makes it expand compared to the bolt, and so makes it easier to turn.

In your example, if it worked at all, it would expand the bolt which would make it even tighter in the steel liner - you would need to expand the liner and/or shrink the bolt I think?

[alanann]

Right so I cannot move the bolt in the top arm I.ve tried the persuader and the impact gun but it is solid in the top arm and probably the bush, 

So I.ve ordered a induction heater similar to the one in the vid, should be here tomorrow so i will report how I get on with it 

hopefully it will do the job or I am snookered. I don.t want to get the grinder out on it.

[alanann]

Right so I cannot move the bolt in the top arm I.ve tried the persuader and the Air Hammer but it is solid in the top arm and probably the bush, 

So I.ve ordered a induction heater similar to the one in the vid, should be here tomorrow so i will report how I get on with it 

hopefully it will do the job or I am snookered. I don.t want to get the grinder out on it.

The tool arrived today exactly as the one in the video so i gave it a try,

the nut was already off so i used it on the bolt head cos it was solid in the clevis hole a few seconds with the tool and it was free in the clevis,

it was also seized in the bush so i heated the bolt head and the thread end to get some heat in the bolt and a few doses of wd40.

I couldn't punch the bolt out because it needs a bit of persuasion to get it moving, there was too much movement with the other 4 bolts out, I have ordered a compact bearing puller so when that arrive I will  have a go at pushing the bolt out, in the meantime the wd40 should be freeing it up hopefully.

I'll give it a go with the air hammer tomorrow after its had a night to soak.

[Herbie]

I've always found this stuff to be much better than WD40:

https://htsupplies.co.uk/products/innotec-deblock-ice-aerosol

[alanann]

Update..

I had no luck getting the bolt out so it will need to be cut out, however i will need to remove the shock so i can get the grinder in to cut the head off the bolt,

I'll leave it till I get hold of a decent used halfshaft.