[s-cars] Rear caliper piston: how to move it into the caliper

[Konstantine Bogach]

  Scott,  thanks!  Just in time before I ordered more expensive tool.  
Will try on Saturday.  I thought that undoing cap on reservoir was enough.

Konstantine

On 09/23/2010 10:06 AM, qshipq at aol.com wrote:
> That square tool works fine if you loosen the bleeder screw first...  
> Which you should do anyhow, no matter which tool you use.  I own 
> several piston retraction tools, including that metalnerd one.  I 
> think it's the worst because the threads on the backing plate jam 
> don't match the threads of the piston post of any Audi I've used it 
> on.  Compare that tool to the 3272 from audi with the correct pitch, 
> you understand what I mean.
>
> I machined my own piston retraction tools from a crapsman sockets and 
> use the low torque setting on my air gun with the bleeder screw open.  
> Less than 10 seconds and the piston is retracted.
>
> Pop the bleeder screw, and the 5.99 tool from HF will work just fine IMO.
>
> HTH
>
> Scott J
>
> -----Original Message-----
> From: John Cody Forbes <cody at 5000tq.com>
> To: Konstantine Bogach <kbogach at comcast.net>
> Cc: s-car-list at audifans.com <s-car-list at audifans.com>
> Sent: Wed, Sep 22, 2010 11:09 pm
> Subject: Re: [s-cars] Rear caliper piston: how to move it into the caliper
>
> You must both rotate and apply axial force to push the piston in, and no, you
> can't apply enough force by hand. Sometimes, if in a pinch, I find that it works
> to rotate a few runs then squeeze with a c-clamp are large pliers, then rotate
> again and squeeze etc. This may get the job done but it takes a very long time.
> Really you want/need the tool that pushes and turns for you.
>
> -Cody (mobile)
>
> On Sep 22, 2010, at 11:57 PM, Konstantine Bogach<kbogach at comcast.net  <mailto:kbogach at comcast.net>>  wrote:
>
> >   I have this "cube" tool.  I rotated the piston clockwise and it does
> >  not go in.   But counter clockwise rotation quickly move the piston
> >  outward.   Can it be that it does not go in because I can not apply
> >  enough pressure on the piston with my bare hands?    I am afraid
> >  something is off inside because the piston had to extend a lot,  the pad
> >  wore out to the metal backing.
> >
> >  Konstantine
> >
> >  On 09/22/2010 09:19 PM, Ian Duff wrote:
> >>  They screw back in. There are a number of ways to do so, the two seemingly
> most common are:
> >>  http://www.harborfreight.com/four-wheel-disc-brake-piston-tool-95713.html
> >>  or
> >>  http://www.idparts.com/catalog/product_info.php?products_id=402
> >>
> >>  If you try to use needlenose pliers, be prepared to replace the piston boots
> that you _will_ rip when the needlenose slips.
> >>
> >>  -Ian Duff.
> >>  On 22 Sep, 2010, at 20:56, Konstantine Bogach wrote:
> >>
> >>>   Hi,
> >>>
> >>>  I am changing rear rotor/pads and need to get the piston into the
> >>>  caliper.  Do I need to screw it onto  or just press it in?  I remember
> >>>  there is a threaded shaft inside to push the piston by parking brake
> >>>  mechanism.  It makes me doubt.
> >>>  I rebuilt 4 of them in the past but time did not spare memories.
> >>>
> >>>  Thanks.
> >>>  Konstantine
> >>>  _______________________________________________
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> >>
> >
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