Vehicle & Technical > Discovery

Seized caliper bolt desperation

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doris:
Well I heated it until it was just turning red, have beat it, used the bolt extractor sockets (Irwin), sworn at it hammered it after removing the other bolt, and it ain't moving a smidge!!!

Am now officially desperate and suicidal, and contemplating scrapping the poxy money pit!!  Humph.

I guess I could always just get another axle and swap the whole bloody thing over............  that's madness isn't it..........  what is it about these vehicles that make us so obsessive.........  I should have thrown this car in the bin long ago, but I just can't bring myself to do it and keep going back for more...........  ITS A DISEASE!!!!

Woe

Damon

Range Rover Blues:
I can't remember exactly but when I had one stuck I split the calliper to get to the other end of the bolt.

Alternatively if you are contemplating an axle swap then grind the head off the bolt, cut the disk so that you can manouvre the calliper away over the shank of the bolt, that way you will have released the tension at least and you can get in to heat it up.

Got a welder? weld something to it, there's nowt like it for heating a bolt up.

doris:
Well, following another 3 hrs heating beating and swearing in excess, I think its beaten me.......

I have heated it for 20mins, hammered sockets on it, hammered the caliper up and down to free it, and its still absolutely seized.

If I grind the caliper off and chuck it away........  either by grinding the disc away to get the hub off, or by grinding the bolt head off and taking the caliper off the stub, what parts am I going to need to put it back together??

Is the caliper bolted to a stub axle or something?  Can I just cut off what I need to to get to bolts, then remove and renew the bit that the caliper is attached to??

I have new discs in stock, and the caliper need changing anyway, but what else??

Many Thanks as Always

Damon

Range Rover Blues:
The calliper bolts to a casting that's welded into the axle casing, damaging that is hardly an option.

If the disk needs swapping then cut it apart, I suggest you cut into the barrel shaped bit about halfway between the wheel flange and the braking surface so as not to damage the hub flange beneath and (perhaps first) cut the disk into 2 halves.  Being cast iron a good blow with a hammer and cold chisel will bust it clean in 2.  You'll also feel a little less stressed :wink:

Then if the calliper is goosed you will be able to see where to cut it in order to get it off that bolt.  If you can leave the bolt undamaged all the better.

Once you are done grinding the calliper away you should then be able to grab the bolt with mole grips and polish a nice scrathcy surface into it.  Why do I ever bother with the damn things :roll:

Grab it with Stilsons, if the head is still there even better.  If they won't budge it you have the option of welding something to the bolt. heating it up again now you don't have the calliper acting as a heat sink, or drilling it through from the outside of the car (last resort).

My personal favourite, grind the head into a T shape so the Stilsons really can't slip and use hands and feet to move it.  Grinding will really heat up the bolt (as will welding). Succesive heating/cooling (especially with WD40) and belting the thing will help break the grip of the rust.

Ja1983:
can you get in to drill it out? seems like everyones going a bit destructive...

if you only want to change the wheel bearing, theres no point cutting/smashing your may through discs etc if at all avoidable.

if it will re-assemble well enough to drive, slip it into a backstreet garage, might cost a few quid, but at least you know it will get done, and saves your sanity! had similar trouble on a wishbone on the rover, could not free it at all, my mechanic was passing and had a go, even using a breaker bar it would not  shift, gave up, booked it in, with it loosely bolted back together drove it down the cobbled hill, by the time i got there it had jiggled around a bit, bit f heat, a bit of a twist anticlockwise, then tried it again....


....off it came!

surprising how a nip in the other direction can get it going!

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