Stopping the truck


The old and reliable.

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Post Mon Mar 18, 2019 8:17 pm

Stopping the truck

First time posting..Start off by saying thanks. My build (project) 1948 KB 6 welding rig
The truck runs great...stops not so good..Just bought rear wheel cylinders. Need the find
Front wheel cylinders...

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Post Mon Mar 18, 2019 8:25 pm

Re: Stopping the truck

Check in the: Re: Parts Link Format
Type in " Wheel Cylinders" will find some info that might help you.

Golden Jubilee
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Location: Lyman, IA

Post Mon Mar 18, 2019 9:24 pm

Re: Stopping the truck

My experience with the larger K's (-6 and up) is they have excellent brakes. I have 2 -7's and one has a lighter GVW (closer to what your-6 would have) and even at 18K gross, it had no problem stopping.
Unless your truck doesn't have a Hydrovac, woah power shouldn't be a problem.
Rear cyl are the hard ones, fronts can easily be sleeved and rebuilt.

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Post Mon Mar 18, 2019 9:53 pm

Re: Stopping the truck

Thanks for you're reply. Really not sure about the hydrovac..it has air compressor. Air valve under the break petal that operates the master cylinder on the passenger side .It also has a trolley brake on the column.
....

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Post Mon Mar 18, 2019 11:22 pm

Re: Stopping the truck

Pictures always help.
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Golden Jubilee
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Post Tue Mar 19, 2019 4:59 am

Re: Stopping the truck

air brakes , nice

Golden Jubilee
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Posts: 4068

Joined: Thu Nov 29, 2012 9:28 pm

Location: Lyman, IA

Post Tue Mar 19, 2019 6:40 pm

Re: Stopping the truck

ironbear wrote:Thanks for you're reply. Really not sure about the hydrovac..it has air compressor. Air valve under the break petal that operates the master cylinder on the passenger side .It also has a trolley brake on the column.
....

I'd like to see pictures of this set up, Never seen a -6 on air and I thought -7's were the start of air being an option.
I'd have to double check my book, but I don't think they made air over hyd from the factory, it would be either all air or all hyd.
Trolley valves were made and used for vacuum as well as air (different unit but same idea)
Quite possable it was "converted" into a tractor at some point to pull air braked trailers. Right after the war trucks were in short supply and many hyd braked trucks underwent a conversion to pull air braked trailers. Kinds sounds like what you may have.
The large majority of the -7 were hyd braked and that goes for the -6's as well. -8 and -10's saw more air brakes but even then they aren't common.
I love to see pictures of what you have, it isn't everyday you see air on a lighter truck.

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Post Thu Mar 21, 2019 1:07 am

Re: Stopping the truck

IMG_20190320_212513.jpg
Master cylinder on passenger side

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Post Thu Mar 21, 2019 1:12 am

Re: Stopping the truck

IMG_20190320_211630.jpg
Air valve under brake petal

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Post Thu Mar 21, 2019 1:19 am

Re: Stopping the truck

IMG_20190320_212659.jpg
I also have a two speed rear end ..not shire if its electric or vacuum.. any help here you can give me would surely would appreciate it
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