On 03/31/2016 10:56 AM, DerbyDad03 wrote:
On Thursday, March 31, 2016 at 10:48:04 AM UTC-4, philo wrote:
On 03/31/2016 09:37 AM, Mr Macaw wrote:
On Thu, 31 Mar 2016 15:34:55 +0100, philo wrote:

On 03/31/2016 09:26 AM, Mr Macaw wrote:
These sound useful, ever used anything like this?
http://www.ebay.co.uk/itm/181742384239

They are of limited usefulness.

If the screw is locked to the point of having it's head break off, one
of those extractors will not work.

Often the screw head breaks off because it's rusty. Or more often, the
head has not snapped off, but you've damaged the phillips shape etc.




If it's rusty, no harm in trying penetrating oil.


If the screw is not seized up but the slot is simply stripped, the
extractor may very well work.

Honda uses short #3 Phillips screws to hold their rotors on during assembly
at the factory. By the time you need to change the rotors, the screws are
often seized in the hub. YouTube has all sorts of videos showing the "best"
technique for getting them out. Of course, the "best" technique differs
from video to video.

I've never tried a screw extractor but I've have drilled the heads off
of one set of rotor screws (8 screws total).

In all other cases (10 rotors in total) I've been able to get them out
by using the the following method:

1 - Spray the screws with PB Blaster and let it work for a few hours
2 - Put a vice grip on the shaft of a #3 Phillips screwdriver
3 - With the screwdriver held firmly in the screw, rap the end of the
handle with a hammer while using the vice grips to apply turning torque
on the screw.

After a few raps, they tend to (hopefully) break free.

Honda rotors (and many aftermarket rotors for Honda) also have threaded
holes in their rotors so you can screw a bolt in against the hub and pop
the rotor off.




If the parts can take it, often heating with a propane torch will loosen
things up.

OD expands a fraction more than ID