Help Removing Discs

[Lynchy]

So I’m replacing discs and pads on my car and for the life of me I can’t get the grub screw out that holds the brake disc in place. Any help would be appreciated

 

[Jakg]

Why can't you get it out? Is it seized or have you rounded it?

 

[bigwinn]

I've had that once

I got advice to drill a hole in the outer edge of the grub screw, using a small drill to a larger one, to then get a tap into the hole and whack it round with a hammer

 

[Lynchy]

Why can't you get it out? Is it seized or have you rounded it?

It was seized and it has started to round so I stopped. I have decided to drill it out in the morning

 

[Lynchy]

I've had that once

I got advice to drill a hole in the outer edge of the grub screw, using a small drill to a larger one, to then get a tap into the hole and whack it round with a hammer

I assume the grub screw is to just hold the disc in place

 

[bigwinn]

I've had that once

I got advice to drill a hole in the outer edge of the grub screw, using a small drill to a larger one, to then get a tap into the hole and whack it round with a hammer

I assume the grub screw is to just hold the disc in place

yeah that’s the one

 

[ronk]

Ive been there a few times!

A good soak overnight in penetrating oil and tackle it with an impact driver.

If this fails, just drill the C/sink head off the holding screw - Once its off, the disc comes away leaving a stub of the screw thread big enough for a set of Mole Grips.

The holding grub screw is usually soft so you shouldn't have any problem and the drill normally centres quite accurately.

 

[Lynchy]

Ive been there a few times!

A good soak overnight in penetrating oil and tackle it with an impact driver.

If this fails, just drill the C/sink head off the holding screw - Once its off, the disc comes away leaving a stub of the screw thread big enough for a set of Mole Grips.

The holding grub screw is usually soft so you shouldn't have any problem and the drill normally centres quite accurately.

Thanks

 

[Lynchy]

I've had that once

I got advice to drill a hole in the outer edge of the grub screw, using a small drill to a larger one, to then get a tap into the hole and whack it round with a hammer

I assume the grub screw is to just hold the disc in place

yeah that’s the one

Does it matter if the disc doesn’t have a screw as the 5 bolts will hold it in place

 

[pvr]

It is only there so that the disc does not fall off when the wheel is off.

 

[Lynchy]

It is only there so that the disc does not fall off when the wheel is off.

That’s good, I will try to get it out though :wink:

 

[Jakg]

Why can't you get it out? Is it seized or have you rounded it?

It was seized and it has started to round so I stopped. I have decided to drill it out in the morning

If you've started to round it, it's probably a little late unfortunately.
If it's rounded too far, you can use a chisel to tap it round.

 

[ronk]

I’m sure you’ll let us know how you got on with the removal task.

 

[enuff_zed]

It is only there so that the disc does not fall off when the wheel is off.

That’s good, I will try to get it out though :wink:

I discovered one that had been sheared and left in the past.
I soon got fed up with the disc moving slightly out of line when I put the wheel on, so the bolts wouldn't go in!

 

[Liam22]

Why can't you get it out? Is it seized or have you rounded it?

It was seized and it has started to round so I stopped. I have decided to drill it out in the morning

If you've started to round it, it's probably a little late unfortunately.
If it's rounded too far, you can use a chisel to tap it round.

A top tip is to tighten it to break the thread, then loosen.

With any tricky looking bolts I always tighten first because if I round it, I might still be able to remove.

 

[Rucky]

WD40 and
1) an impact driver if its a +
2) Hex then its probably a cobalt drill

 

[srhutch]

Did you get it out Ed?

 

[Lynchy]

Did you get it out Ed?

I drilled it out Steve, all the others came out ok so I now have new discs and pads all round

 

[ronk]

Was there a stub remaining to your mole grips on?

 

[Lynchy]

Was there a stub remaining to your mole grips on?

Unfortunately not but I’ll try and drill it out another day as my rear discs came with spare bolts