Re: [Chrysler300] Re: 12 “ total contact front brakes

Your comment immediately reminded me of the thicker stronger adjusters , a thing I once knew about, but forgot. more space between the two support plates , stronger cam follower piece and much better cam adjustment . That forced a different dimension on wheel cylinders just as you say . ? About mid 58 . 58 came both ways I think . Not sure if wing retainers changed to spring pins at different times than this wheel cylinder change , probably not? All at once ? Some shoes might work in both ? Or not ?

Added to that is whether back wheels changed in same ways at same time . Probably yes ..

Ball joints and upper control arm bushings were improved / made larger n 58 too . Big confusion when you get wrong parts, but they are listed for 58 . That happened to me. This stuff and knowledge of it disappearing .

All things being equal , later 59 up brakes control arms ,upper bushings etc are better , but in conflict with originality . ( I would personally want later stuff) But 57 , early 58 brakes and suspension apparently had problems beyond the later ones . Why a running change ...

thank you for important input..

John

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On 20 Sep 2018, at 11:02 am, Jean-Yves Chouinard <jymopar@xxxxxxxxxxx> wrote:

Thank you Don, your memory is better than mine!

I will forward this to John Grady..

Thank you!

JY

From: dverity@xxxxxxxxxxx <dverity@xxxxxxxxxxx>
Sent: September 20, 2018 1:04 PM
To: Jean-Yves Chouinard
Subject: Re: [Chrysler300] Re: 12 “ total contact front brakes

The 57-58 cars had the 2 platform brakes, with the wing style shoe retainers. The 59-62 had the 3 platform brakes with conventional hold down springs (like the bendix). The adjuster plate was also thicker on the later brakes, making the wheel cylinders different. Yes, the backing plates were also different. The 56, while having the total contact brakes, had yet another different shoe.

Don

From: mailto:Chrysler300-noreply@xxxxxxxxxxxxxxx

Sent: Thursday, September 20, 2018 7:01 AM

To: John Grady ; chrysler300@xxxxxxxxxxxxxxx

Subject: [Chrysler300] Re: 12 “ total contact front brakes

It has been a few years since we did the 300C and 300D so I don`t recall specifically what was the difference between 57/58 and later 60/61 brakes , we did a swap to 60/61 brakes on a C or D and yes there were some stuff that was different between the two . Once I get the D back from the paint shop, I can check visually what is different between each type of brakes, I can compare between my F coupe and the D. D will not be back in my shop for a few weeks though...

JY

From: John Grady <jkg@xxxxxxxxxxxxxxxxx>
Sent: September 19, 2018 3:22 PM
To: chrysler300@xxxxxxxxxxxxxxx
Cc: Chouinard JY
Subject: Fwd: 12 “ total contact front brakes

Hi , I did not state this correctly , sorry , additionally meant to ask if rear brakes/ shoes mounting etc follow the front shoe changes ? And the when ?
Involves I think contact pads and / or vees that hit on backing plate “ bumps or pads” so backing plate changes ? Also small retaining pins and springs from backing plate move too , holes in shoes are in different locations . Possibly large spring too .

This info may exist in service bulletin or something ? I seem to remember seeing it ..?

Sorry for double mailing,

John

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Begin forwarded message:

From: John Grady <jkg@xxxxxxxxxxxxxxxxx>
Date: 19 September 2018 at 8:29:56 am GMT-4
To: "chrysler300@xxxxxxxxxxxxxxx" <chrysler300@xxxxxxxxxxxxxxxx>
Cc: Chouinard JY <jymopar@xxxxxxxxxxx>
Subject: 12 “ total contact front brakes

Hi ,
Need some help or advice ; JY mentioned to me in the past some issues around how the brake shoe return spring is attached to the shoe , such that different ( and apparently not interchangeable) 12” shoes exist ? There may be other differences too ? I have a pile of 12 “ brake parts , probably like many others , and trying to assemble compatible 12 “ pieces .
Is anyone familiar with this and when it changed — and differences across the years before Bendix ?
Thank you ,
John
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