Brilliant explanation, I had no idea it worked in such a way. It’s one of those classic designs that’s so good it hasn’t changed for decades and varies so little from car to car.
Great, glad you enjoyed it! Yes, apart from the size and therefore the amount of assistance it provides, it pretty much is the same on everything. Thanks for the kind words!
Good stuff! I am left wondering how the brake booster continues to function with forced-induction applications, however. Is that, perhaps, what the vacuum reservoirs you will sometimes see hidden in the engine bay or behind fenders are for?
My car won't push the brake fluid through the pipes, it also makes a sound as if air is escaping and the pedal will not resist when the engine is off, any ideas on what the problem could be? I thought it was the master cylinder so I changed that but it didn't fix it.
Hi, I’d first check the engine breather pipe, the one that runs from the top of the engine to the front of brake servo unit, see if it has any small splits?
Hi, yes, in theory that should be ok. The size of the unit itself is the most important thing. Usually, the bigger the servo unit, the less braking effort is needed. That can go too far and give over sensitive brake application if the size varies a lot. If the size is similar, it should be ok.
Why not just use a big brake cylinder? If you have the right dimensions it would do the same thing but less complex. Pretty sure they thought of it and it's not an option somehow but l can't see why. Thanks for the video btw 👍
Hi, thanks for the comment. I guess pushing a cylinder against fluid would involve a lot more pedal effort and probably much slower to react at the wheels? That’s my guess! Would physically work though. Thanks!
@@kwaynr1301 Classic cars frequently didn't have a servo or booster. That's why yes, you could stop them but you had to be putting a lot more pressure on the brake pedal. The servo / booster means you can get that same amount of pressure applied with a lot less force from your foot. Bear in mind regarding adding a large servo, engines will create varying amounts of vacuum. Diesel engines are fitted with vacuum pumps to create vacuum as they don't produce vacuum like a petrol engine does.
Brilliant explanation, I had no idea it worked in such a way. It’s one of those classic designs that’s so good it hasn’t changed for decades and varies so little from car to car.
Great, glad you enjoyed it! Yes, apart from the size and therefore the amount of assistance it provides, it pretty much is the same on everything. Thanks for the kind words!
Good stuff!
I am left wondering how the brake booster continues to function with forced-induction applications, however. Is that, perhaps, what the vacuum reservoirs you will sometimes see hidden in the engine bay or behind fenders are for?
❤❤ thanks alot for this amazing informative video
Glad it was helpful! Please consider subscribing if would, thanks again!
Great explanation - many thanks 👍
Glad it was helpful!
My car won't push the brake fluid through the pipes, it also makes a sound as if air is escaping and the pedal will not resist when the engine is off, any ideas on what the problem could be?
I thought it was the master cylinder so I changed that but it didn't fix it.
Hi, I’d first check the engine breather pipe, the one that runs from the top of the engine to the front of brake servo unit, see if it has any small splits?
Hi there, im wandering if i could use brake servo of 2.0 engine to 1.6 engine diesel ?
Thanks
Hi, yes, in theory that should be ok. The size of the unit itself is the most important thing. Usually, the bigger the servo unit, the less braking effort is needed. That can go too far and give over sensitive brake application if the size varies a lot. If the size is similar, it should be ok.
@AdamMechanic thanks very much for getting back to me, that's great help 😀
@@AB-ci4vh No problem!
Why not just use a big brake cylinder? If you have the right dimensions it would do the same thing but less complex. Pretty sure they thought of it and it's not an option somehow but l can't see why. Thanks for the video btw 👍
Hi, thanks for the comment. I guess pushing a cylinder against fluid would involve a lot more pedal effort and probably much slower to react at the wheels? That’s my guess! Would physically work though. Thanks!
@@AdamMechanic isn't that what a brake cylinder is doing, pushing a fluid?
Yes, that right, but obviously the servo has already multiplied the braking effort by that point.
@@AdamMechanic There are brake systems without servo. Every hydraulic brake system uses a cylinder to push a fluid.
@@kwaynr1301 Classic cars frequently didn't have a servo or booster. That's why yes, you could stop them but you had to be putting a lot more pressure on the brake pedal. The servo / booster means you can get that same amount of pressure applied with a lot less force from your foot. Bear in mind regarding adding a large servo, engines will create varying amounts of vacuum. Diesel engines are fitted with vacuum pumps to create vacuum as they don't produce vacuum like a petrol engine does.