Re: KB6 Clutch
Posted: Thu Oct 16, 2014 1:48 pm
Stop right there! You used grease??? You've contaminated the brake fluid.Take it back off and clean it very thoroughly again with brake clean 1st then denatured alcohol to remove any residue of the brake clean. That includes the reservoir before reassembly,which I would do by using a 1-1/2" rubber sink stopper in the bore,pour a some alc. in the top,screw the cap on and shake the hell out of it,empty and then do it at least twice more. Let everything air dry,denatured alc. evaporates quickly.
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.
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.