The Stovebolt Site Forums The Shop Area General Truck Talk Are 51 and 52 M/C's the same on 1/2 tons

Have a guy who wants my m/c but I need to make sure it will fit his 51. I think they are the same for several years but I need to be SURE!....thanks

LMC Truck shows a different part number for 51 and 52-55 1st MC's. I'm guessing the answer is no.

Alvin,

Here are some "year breaks" for 1/2 ton master cylinders.

It looks like 1951 (first Bendix year) is different from both 1950 (Huck brakes) and 1952 (as also shown by Highflyer).

Thanks Tim and Highflyer. I should have checked the parts places myself...Duh!!

OK, it had been a long day in the shop and pass my bed time when I posted the ?

It shows both the '51 and '52-'54 as 1 1/8" bore size. Any idea what the difference might be between them?

Nice question. I have changed my huck brakes to bendix, on my 48. Doing so, I decided to change from the huck brake master cylinder to the bendix. The lines were replumbed to match this change also. I found that the lines entering the front brakes entered from the rear where the later (I used 53 lines) entered from the front. So, until I can get the correct length lines I put a pigs tail in the line. I am using the brake line kit I purchased from one of our vendors.

I have not put this truck on the road yet so I cannot give you any information from a test run.

Napa catalog shows the 51 all by its self. The kit is the same from 51-59. The difference is probably the mounting or the pedal shaft.

Thanks guys. I was trying to help a fellow bolter but looks like I struck out.

Struck out - no. Started a good conversation - yes.

Thanks

Here is what the American Classic Parts told me.

"You might want to sit down for this Martin. Napa’s parts number was 14484 but their price in 2006 was $450 retail and I don’t know if they still sell it. I have one on our shelf that I can let go for $175 which is what we paid for it. They now still sell it for $205.80 NMC M14484.

However having said that we sell reproductions BR0103 from don’t know where for $99.99 that take a 7/16 x 24 fitting.

The Stove bolt guys should have told you that the 52-55 master cylinders works BR0104 and the only difference is the fitting for the brake line which takes a 1/2 x 20 Male.

We also sell the conversion fitting. BR4404.

Hope this helps but if it doesn’t still say nice things about us. Please. CM.

www.americanclassic.com"