[DeTomaso] Brake Caliper Question

[Tomas Gunnarsson]

The lock rings only retain the dust boots. The pistons will pop right out through the boot openings with the retainers in place.

Tomas

----- Original Message ----- 
From: <MikeLDrew at aol.com>
To: <loudonc at comcast.net>; <detomaso at realbig.com>
Sent: Thursday, October 18, 2007 4:31 AM
Subject: Re: [DeTomaso] Brake Caliper Question


> 
> In a message dated 10/17/07 5:26:38 PM, loudonc at comcast.net writes:
> 
> 
>> Thanks to all who responded on this. I apologize for not being clear. The 
>> pistons can push back, but upon applying brake pedal pressure the pistons only 
>> come back out a limited amount, not matter how much pressure is applied at 
>> the pedal. I expected that the pistons would push the pads out.
>> 
> 
> Yes, it should.   However, there are locking rings which (probably) prevent 
> the pistons from coming all the way out of the bores.
> 
> The caliper overhaul procedure (for the front calipers) is on page 12-10-02 
> of the factory shop manual.   Please tell me you have a factory shop manual?   
> For the rear brakes it's absolutely critical as they are very strange, and the 
> procedure to overhaul them is complicated.
> 
> For the front calipers (which is what I presume you're talking about), you 
> remove the calipers, remove the pads, use a plastic pick to remove the retaining 
> rings and rubber boots from the pistons, then put a thin wood block between 
> the opposing pistons and use compressed air to force the pistons out of their 
> respective bores.
> 
> If you've removed the boots and retaining rings and the pistons won't come 
> out all the way, they are hung up in there, and then you will have to use 
> finesse and/or brutality to force/pull them out.
> 
> Oh, and the shop manual and all the associated goodies are available from the 
> POCA store (www.panteraclub.com), either in dead-trees or CD-ROM format.
> 
> Good luck!
> 
> Mike
> 
> 
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