RE: [Chrysler300] 1955 Power Brake Booster and Master Cylinder
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RE: [Chrysler300] 1955 Power Brake Booster and Master Cylinder



Sorry, the link below doesn't take you to the exact part. You have to use
their search feature and enter 1955 Chrysler 300 to find the kit.

Ron 

-----Original Message-----
From: Chrysler300@xxxxxxxxxxxxxxx [mailto:Chrysler300@xxxxxxxxxxxxxxx] On
Behalf Of 'Ron Waters' ronbo97@xxxxxxxxxxx [Chrysler300]
Sent: Tuesday, June 12, 2018 9:44 AM
To: 'Jack Boyle'
Cc: Chrysler300@xxxxxxxxxxxxxxx
Subject: RE: [Chrysler300] 1955 Power Brake Booster and Master Cylinder

Jack -
 
Thanks for the explanation on how these master cylinders work. That would
explain why the fluid leaked out.
 
The kit that Harmon sells is the one for the Kelsey-Hayes power unit. I just
spoke to them a few minutes ago. Their complete kit is for both the p/b unit
and the master. Here's the link to their kit:
https://www.parts123.com/parts123/yb.dll?parta~partsort~1~cadfffkz~~20
 
Ron

  _____  

From: Jack Boyle [mailto:jackcboyle@xxxxxxxxx]
Sent: Tuesday, June 12, 2018 9:29 AM
To: 'Ron Waters'
Subject: RE: [Chrysler300] 1955 Power Brake Booster and Master Cylinder



My late father was an expert on these and rebuilt one that I have in my
stash.

 

Usually when somebody has a '55 rebuild kit is not for the Kelsey-Hayes unit
but for a traditional piston unit that was dealer installed on many cars.
The KH unit uses a rod going through donut seals to displace fluid rather
than a piston pushing a column of fluid. If, when you separated this unit's
components, the stainless steel rod came out of the donut seals that would
let the fluid out.

 

I have struggled with my '55 brakes for years trying to get them up to
modern/freeway needs. So I replace the KH unit with a safer double cylinder
unit.

 

I think the guy in Minnesota (he advertises everywhere) is the only source
for kits for this unit.

 

I do have an NOS kit but the rubber is so old..

 

...Jack

 

From: Chrysler300@xxxxxxxxxxxxxxx [mailto:Chrysler300@xxxxxxxxxxxxxxx] On
Behalf Of 'Ron Waters' ronbo97@xxxxxxxxxxx [Chrysler300]
Sent: Tuesday, June 12, 2018 7:56 AM
To: Chrysler300@xxxxxxxxxxxxxxx
Subject: [Chrysler300] 1955 Power Brake Booster and Master Cylinder

 

  

Hey Everyone -

 

I have a non-operating 1955 power brake booster. This is a one-year-only
setup that is found on the C300 as well as other Mopars of that year.

 

I removed the assembly from the firewall for repair. When I separated the
master cylinder from the booster, brake fluid poured out of the rear bore of
the master. There was also some brake fluid inside the rear of the booster.
I was told that that was correct due to the design of the setup. I'm
scratching my head on that. Any thoughts on this ?

 

Side Note: The rebuild kit for the power brake unit is available from Harmon
Classic Brakes (https://harmonclassicbrakes.com/). 

 

Ron





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Posted by: "Ron Waters" <ronbo97@xxxxxxxxxxx>
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Posted by: "Ron Waters" <ronbo97@xxxxxxxxxxx>
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