Date: Fri, 31 Jul 2009 09:44:12 -0600
Reply-To: Warren Lail <wklail@GMAIL.COM>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Warren Lail <wklail@GMAIL.COM>
Subject: Re: RE; rear brake shims
In-Reply-To: <75d3f60907310817i128b88f6w12ce8fe323c31682@mail.gmail.com>
Content-Type: text/plain; charset=ISO-8859-1
Hi John,
The shims are intended to give better expansion at the bottom of the
brake shoe. When you pull your shoes you will likely notice that they
are worn only on the upper third, or upper half. That is because the
design is such that the lower parts of the shoe only slightly contact
the drum (bad design). Dennis Haynes suggests using shims to expand
the lower part of the shoes somewhat. He suggest, and I purchased
from McMaster-Carr two types of stainless steel metric shims. The 1mm
are 14mm i.d., 20 mm o.d. x 1mm thick. The .5mm are 14mm i.d., 20 mm
o.d. x .5. They're expensive.
I could not figure out how they were to be installed, so I first put
shims on the "outside" of the slotted things at the bottom. That was
wrong, and I could see that the normal 2 to 3 mm worth of shims would
do nothing. I eventually got help from this list (thanks everyone)
that the notched pieces actually (theoretically) come out. Mine were
rusted badly, so I soaked them overnight with PB Blaster. This
morning I got them off, added 2mm under each one, sewed it all back up
and now I have brakes. I put new brakes front and rear and bled them
with my Motive Pressure Bleeder.
Make sure when you pull those drums that you thoroughly spray the dust
away with brake cleaner before you do anything. You do not want to
inhale any of that dust.
Warren in Santa Fe
88 Westy, Subie 2.2
On Fri, Jul 31, 2009 at 9:17 AM, John C...<jcarp2001@gmail.com> wrote:
> http://tinyurl.com/mkk896
>
> Hi All,
>
> I hope everyone is enjoying this beautiful Summer !!!
>
> I finally got the front syncro wheel bearings figured out.
> (pricey lesson :o) ! but a lesson well learned ! :o)
> Just got back from a 2500 mile trip
> and everything seemed to go real well with the suspension!
>
> Now, to complete the rear suspension.
> (Should be a Lot easier than the front)!
>
> &, Yeah, I kind of ruined one backing plate
> removing the notched V shaped shoe holder.
> Man! they're tight!
>
> What exactly is the advantage to shim them out the 2-3 MM?
> Does it center the shoes better or what?
> & what is everyone using for shims?
>
> I bought the shoes & ATE cylinders from GoWesty.
> I hope they are the good ones.
> Same part number, but no core charge?
>
> I like that they have them in stock, ready for shipping!
> And, I believe they use some kind of
> Lightning process to ship with... They're Fast !!! :o)
>
> I'm doing the whole enchilada back there too.
> 2" raiser springs, shocks, bushings, bearings, CV's,
> brakes, spacers, wheels & tires, rust bullet paint etc...
>
> I was just over to the DIY car wash this AM
> to spray all of the heavy grease
> off / out of the CV's
> What a mess!
> Painters paper coveralls, target store bags over the shoes etc!
> Strip all of that off & throw in the garbage after spraying is done.
> I use a heavy sand blast screened box
> to set everything in so I don't loose any ball bearings !
> & will now re-clean with petro
> and compressor air dry;
> Synthetic grease & It's a happy puppy again !!!
>
> Now,,, about that SVX !!! ;o)
>
> best,
> JC...
>
> http://tinyurl.com/mkk896
>
>
>
> On Thu, Jul 30, 2009 at 9:57 PM, Warren Lail <wklail@gmail.com> wrote:
>>
>> Got some good info on those shims. It turns out that the notched open
>> v-shaped thing at the bottom of the brake is not threaded. Those
>> notched things pull out and the shims go beneath them. I was able to
>> get one off but the others would not budge. I'm soaking everything in
>> PB Blaster and I'll see how things are in the morning.
>>
>> Thanks to all who provided input on this topic.
>>
>> Warren
>> 88 Westy "Billy Bones"
>
>
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