Wrapper

"Stuart A. Bronstein" <spamtrap@lexregia.com> wrote in message
news:Y7MOf.44920$H71.10895@newssvr13.news.prodigy.com...[color=blue]
> Hi Mr Cheerful,
>
> Thanks for the advice. I guess I just assumed there was a tool to measure
> brake piston sticking. If there isn't a tool, I can do what you say and
> test it by hand with the calipers disassembled.
>
> Luckily these 1998 Toyota 4Runner front calipers are the easiest I've seen
> in my life to work on. We don't even need to remove a single bolt to get
> the brake pads out. All we do is remove a clip by hand, then pull two pins
> by hand, pop out the anti-vibration spring by hand, and then pull out the
> two brake pads and two anti-squeal shims per pad.
>
> Looking in my Toyota Repair Manual, I can see that it only takes two bolts
> to remove the calipers from the car (in addition to the brake line).
>
> Then it says to pry out the four "cylinder boot set rings and boots" per
> caliper, which at first I presumed was the same as the "piston seals" you
> speak of. But, reading on, Toyota says to blow out the pistons with
> compressed air (placing a wood plate in the space where the rotor was).
>
> Only then, the repair manual says to pry up the four "piston seals" with a
> quarter inch flathead scewdriver. The Toyota Repair Manual exploded
> diagram
> shows four "set rings", "boots", "pistons", and "piston seals", in that
> order, outward from the rotor in both directions.
>
> The problem then becomes, how does one test piston force after removing
> the
> piston seal when the pistons are already out of the calipers by this time.
>
> Still, there's no harm in taking the calipers apart.
> The shop manual says to lubricate some areas with "lithium soap base
> glycol
> grease" and others with "disc brake grease". Aren't they the same thing?[/color]

Just to break in, in case you're just about to do the job ;)

Mr Cheerful's method doesn't involve any dissasembly of the caliper for the
test he describes.

--

Tony Bond / UncleFista

[url]www.bradford7.co.uk[/url]

Love is like a snowmobile, speeding across the frozen tundra.
Which suddenly flips, pinning you underneath.
At night the ice-weasels come...