Golden Jubilee
Posts: 2048
Joined: Thu Jan 24, 2013 8:49 pm
Re: KB6 Clutch
Use ONLY brake fluid to pre-lube during assembly.
Bench bleed the MC before installing.
Replace the steel brake line from the MC to the hydro-vac,it's very likely rusted inside,they're not expensive.
To answer the questions...
Yes,the brakes are "power assist", a Hydro-vac is a vacuum powered booster with a slave cylinder attached. That us why there's a specific procedure to bleed the system.
Hydro-boost is a combination of a vacuum booster & master cylinder,the function is very similar to an H-vac system but not exactly the same.
HydrA-boost brakes are powered by a hydraulic pump,such as a power steering pump and usually have a vacuum booster as "back up" in case the engine shuts off or the pump fails although some use a small electric motor as back up. Depending on the system a vehicles PS pump can be piped for both brakes and steering.
"Foundation brakes" are the wheel brakes to put it simply.
The plugged hole on the MC is for a brake light switch and should be 1/8-27 NPT.
Here's a couple 40's vintage (military) brake service manuals that cover the same type brake system you have.Very thorough,Read them!
https://ia700404.us.archive.org/28/item ... ed1944.pdf
https://ia601504.us.archive.org/3/items ... -1827B.pdf
They can be downloaded and then printed.
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