My Willys 3A and 3B Community

3A, 3B, DJ Technical Knowledge Base => "Original"-- Technical Questions, Answers, Observations => Topic started by: 1955CJ-5 on May 27, 2013, 09:07:38 PM

Title: Aluminum Brake Master Cylinder
Post by: 1955CJ-5 on May 27, 2013, 09:07:38 PM

My '51 had this aluminum Wagner-Lockheed master cylinder installed when I bought the jeep. I'm told it is original and was only used for a few years.

My question is, What should the cap look like, and does anyone have any ideas where i might find one?

(http://i1055.photobucket.com/albums/s519/green55jeep/51%20cj-3a%20rust%20pictures/th_P1050381_zps03fa93ce.jpg) (http://s1055.photobucket.com/user/green55jeep/media/51%20cj-3a%20rust%20pictures/P1050381_zps03fa93ce.jpg.html)

(http://i1055.photobucket.com/albums/s519/green55jeep/51%20cj-3a%20rust%20pictures/th_P1050380_zps392b9d03.jpg) (http://s1055.photobucket.com/user/green55jeep/media/51%20cj-3a%20rust%20pictures/P1050380_zps392b9d03.jpg.html)

(http://i1055.photobucket.com/albums/s519/green55jeep/51%20cj-3a%20rust%20pictures/th_P1050378_zps391ca9b7.jpg) (http://s1055.photobucket.com/user/green55jeep/media/51%20cj-3a%20rust%20pictures/P1050378_zps391ca9b7.jpg.html)

Thanks!

Title: Re: Aluminum Brake Master Cylinder
Post by: Quebec Jeep on May 28, 2013, 08:11:00 AM

Did you ask Carl Walck's?

Title: Re: Aluminum Brake Master Cylinder
Post by: 1955CJ-5 on May 28, 2013, 08:54:03 AM

Not yet...Good idea!

Title: Re: Aluminum Brake Master Cylinder
Post by: 1955CJ-5 on May 28, 2013, 05:29:12 PM

I called and talked with Carl. Yes it's an original brake master cylinder, and no, parts are not available. Although the rebuild kit is the same as the cast iron units, there are no caps available. I made a new gasket for the top...the cap is serviceable it just looks like heck, as someone used a pair of water pump pliers to loosen it at one time...from the damage it must have been pretty well stuck..

Title: Re: Aluminum Brake Master Cylinder
Post by: PaulS on May 28, 2013, 10:58:43 PM

I've got one in the spare parts bin that came with my Jeep.  It doesn't look quite the same as yours, and the cap is very different.  I'll see if I can get a picture for you.  I could also check if the cap from the other one fits it.  If so maybe you could buy that instead.

Paul

Title: Re: Aluminum Brake Master Cylinder
Post by: 1955CJ-5 on May 28, 2013, 11:05:19 PM

I'll look forward to the picture! My cap has a Lockheed part number on it..#12105..

Title: Re: Aluminum Brake Master Cylinder
Post by: PaulS on May 28, 2013, 11:21:04 PM

Here's mine:
(http://www3.telus.net/plsmjs/jeepblog/_MG_0673_.jpg)

Wagner Lockheed # FC4073 (or maybe F04073).

Very definitely NOT interchangeable with the cap for the steel or iron MC that was actually installed on my Jeep.

-Paul

Title: Re: Aluminum Brake Master Cylinder
Post by: 1955CJ-5 on May 28, 2013, 11:26:57 PM

Well that's yet another one...My cap is about 1.2" across the threaded portion. I think most the cast iron cylinders are about 1 1/2".....there is a fellow selling the 1 1/2" versions on ebay...he had a bunch of them...

Thanks for the picture!

Title: Re: Aluminum Brake Master Cylinder
Post by: PaulS on May 28, 2013, 11:31:04 PM

I didn't measure diameter, but it was certainly smaller than the iron one.  I would expect it to be the same as yours.

-Paul

Title: Re: Aluminum Brake Master Cylinder
Post by: 1955CJ-5 on July 23, 2013, 04:32:40 PM

I never thought I'd find one of these, much less a new one...

This fellow had one...super service too...

http://www.brakeproducts.com/

Title: Re: Aluminum Brake Master Cylinder
Post by: Bob W on July 23, 2013, 09:20:05 PM

Nice!!!!