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Author Topic: What's the best way....  (Read 504 times)

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Sir Tigger QC

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What's the best way....
« on: 01 January 2019, 16:54:25 »

.... to remove a welded on brake disc?  ???

I need to change the rear discs and pads on the Mondeo and made a start this afternoon, only to find that the disc is welded on.  ::)

When I did the fronts last year I smacked 7 bells out of them with the sledgey.  One came off whole, the other in pieces....  :D

Given it's New Years Day and some of the neighbours have family and friends round, I refrained being a considerate chap, so squirted lots of WD40 around and gave it some light taps with the hammer.  ::)

Tomorrow however....  ;D

Unless someone comes up with a better solution.  Heat perhaps?  ???  :-\

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Field Marshal Dr. Opti

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Re: What's the best way....
« Reply #1 on: 01 January 2019, 17:04:09 »

Gentle manipulation with 'sledgy the hammer' should see you right.
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BazaJT

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Re: What's the best way....
« Reply #2 on: 01 January 2019, 17:26:18 »

Must admit my first thought was heat,but would that run the risk of damaging the bearing in some way?Best rust buster I've found is a 50/50 mix of atf-u and acetone.Local stealer uses your primary method of "Sammy".
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Migv6

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Re: What's the best way....
« Reply #3 on: 01 January 2019, 18:42:44 »

A puller ?
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STEMO

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Re: What's the best way....
« Reply #4 on: 01 January 2019, 18:48:44 »

A puller ?
Who are you calling a puller?  ;D
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Sir Tigger QC

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Re: What's the best way....
« Reply #5 on: 01 January 2019, 20:56:06 »

A puller ?

No special tools available.  :(

I have a range of hammers in different sizes, a blowtorch and a gurt big iron bar....  :-\   :)
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Re: What's the best way....
« Reply #6 on: 01 January 2019, 21:13:13 »

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Sir Tigger QC

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Re: What's the best way....
« Reply #7 on: 01 January 2019, 21:35:55 »

Thanks BG!  :y

I havn't taken the caliper bracket off yet, but I took off the caliper and took out the disc screw, gave the disc a tap with the hammer and it's rock solid.  ::)
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Andy H

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Re: What's the best way....
« Reply #8 on: 01 January 2019, 21:50:36 »

I had this problem on the MV6 last month.

I tried a little 'light persuasion' but I wasn't prepared to hit it hard enough to make it let go.

Plan B was to take out the retaining screw and wheel bolts - started the engine, stuck it in 'drive' and applied the brake repeatedly until the disc released it's grip on the hub.  :y

The disc can't go anywhere because the caliper is holding it in place.

Edit - the drag in the gearbox is enough to turn the wheels so no need to apply lots of throttle - just press the brake each time the disc starts turning at about walking pace until it eventually lets go.
« Last Edit: 01 January 2019, 21:54:52 by Andy H »
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Re: What's the best way....
« Reply #9 on: 01 January 2019, 22:01:45 »

I had this problem on the MV6 last month.

I tried a little 'light persuasion' but I wasn't prepared to hit it hard enough to make it let go.

Plan B was to take out the retaining screw and wheel bolts - started the engine, stuck it in 'drive' and applied the brake repeatedly until the disc released it's grip on the hub.  :y

The disc can't go anywhere because the caliper is holding it in place.

Edit - the drag in the gearbox is enough to turn the wheels so no need to apply lots of throttle - just press the brake each time the disc starts turning at about walking pace until it eventually lets go.
.

Old school, workshop practice,, before the elf's. :y
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Webby the Bear

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Re: What's the best way....
« Reply #10 on: 01 January 2019, 22:07:13 »

For whatever reason the mundane-o discs take quite a bit to knock off.
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Sir Tigger QC

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Re: What's the best way....
« Reply #11 on: 01 January 2019, 22:37:28 »

For whatever reason the mundane-o discs take quite a bit to knock off.

Yes it was a hell of a job when I did the fronts last year.  ::)

Ended up smashing one up...  :o
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Andy H

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Re: What's the best way....
« Reply #12 on: 01 January 2019, 22:50:44 »

Oops - my reply isn't going to help in getting the rear discs off a wrong wheel drive car ::)
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Re: What's the best way....
« Reply #13 on: 01 January 2019, 23:20:19 »

Is the hub bolted to the trailing arm?

If yes, unbolt it and place the disc face up on a couple of blocks and smash ten bells of shit out of the centre of it to knock the hub off the disc ::)
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78bex

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Re: What's the best way....
« Reply #14 on: 01 January 2019, 23:35:08 »

.... to remove a welded on brake disc?  ???

I need to change the rear discs and pads on the Mondeo and made a start this afternoon, only to find that the disc is welded on.  ::)

When I did the fronts last year I smacked 7 bells out of them with the sledgey.  One came off whole, the other in pieces....  :D

Given it's New Years Day and some of the neighbours have family and friends round, I refrained being a considerate chap, so squirted lots of WD40 around and gave it some light taps with the hammer.  ::)

Tomorrow however....  ;D


Unless someone comes up with a better solution.  Heat perhaps?  ???  :-\

OK are they deep sleepers  ??? good, won`t take you more then 30 minutes to get the job done if you start it now  ;D
I never hammer from the rear of the disc, there`s always a risk of hitting & deforming the caliper bracket  mounting points. hammer it diagonally across the front face.
The folks next door will just think you`re ringing in the new year......again  :-X
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