What Is It?
#1
Burning Brakes
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I know others have somehow wiggled their hands into the abyss and managed to change the clutch master cylinder with all systems in place, I took (what I thought) was the easy route by removing the brake booster and doing a general clean-up while I was at it.
In cleaning the reservoir, there is a rubber cover over a spring loaded 'switch' that you can depress. Here it is without the rubber cover. What is it, and what do it do?
In cleaning the reservoir, there is a rubber cover over a spring loaded 'switch' that you can depress. Here it is without the rubber cover. What is it, and what do it do?
#2
Rennlist Member
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When you pulled the booster, did you push in the brake and secure the MC rod w/a clamp plate?
Last edited by Jadz928; 10-13-2013 at 11:01 PM. Reason: removed wrong info
#5
Burning Brakes
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Jim, I'm going with Mike's test switch answer. Sounds right to me.
Yes, I did push in on the brake pedal and secure it with a clamp...which flew off the minute I released the brake pedal. So, I clamped the rod with a small set of Vice Grips, and took 2 swipes at it per the WSM. It still was a couple of mm protruding too much to allow me to rotate the booster out.
So, I used a screw driver behind the Vice Grips to exert just a little more pressure and that got me what I needed. Not elegant, but it worked.
What is really needed is a threaded shaft on the booster that allows you to pull the rod out. How do we do that, Jim?
Here's a couple of photos:
Yes, I did push in on the brake pedal and secure it with a clamp...which flew off the minute I released the brake pedal. So, I clamped the rod with a small set of Vice Grips, and took 2 swipes at it per the WSM. It still was a couple of mm protruding too much to allow me to rotate the booster out.
So, I used a screw driver behind the Vice Grips to exert just a little more pressure and that got me what I needed. Not elegant, but it worked.
What is really needed is a threaded shaft on the booster that allows you to pull the rod out. How do we do that, Jim?
Here's a couple of photos:
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#8
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...
So, I used a screw driver behind the Vice Grips to exert just a little more pressure and that got me what I needed. Not elegant, but it worked.
What is really needed is a threaded shaft on the booster that allows you to pull the rod out. How do we do that, Jim?
Here's a couple of photos:
So, I used a screw driver behind the Vice Grips to exert just a little more pressure and that got me what I needed. Not elegant, but it worked.
What is really needed is a threaded shaft on the booster that allows you to pull the rod out. How do we do that, Jim?
Here's a couple of photos:
![Wink](https://rennlist.com/forums/images/smilies/wink.gif)
#9
Team Owner
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to pull the booster rod out,
simply get a piece of gas line hose slide it onto the rod then get the vice grips and clamp it ,
it wont move till your ready and no marks on the rod.
Ahh the other point to remember is that the seating surface of the MC to the booster is a precision fit ,
and if you scratch this surface then you may find your brakes wont work as well as they should,
since you will have effectively created a vacuum leak to the booster.
There is also a rubber seal thats in between the booster and MC but a scratch will make the seal difficult
simply get a piece of gas line hose slide it onto the rod then get the vice grips and clamp it ,
it wont move till your ready and no marks on the rod.
Ahh the other point to remember is that the seating surface of the MC to the booster is a precision fit ,
and if you scratch this surface then you may find your brakes wont work as well as they should,
since you will have effectively created a vacuum leak to the booster.
There is also a rubber seal thats in between the booster and MC but a scratch will make the seal difficult
#10
Burning Brakes
Thread Starter
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I'm going to work-up a bracket for the rear of the booster. I'll source parts tomorrow and cobble it together. If it works, I'll shoot it up to you.
I has a small spot of surface rust on the bottom of the booster, and after sand/prime, I hit it with the Eastwood Chassis Black and now it's clear that the whole booster will look amazing painted. Like you, I need to get that plate off to do it right.
Bob
I has a small spot of surface rust on the bottom of the booster, and after sand/prime, I hit it with the Eastwood Chassis Black and now it's clear that the whole booster will look amazing painted. Like you, I need to get that plate off to do it right.
Bob
#11
Burning Brakes
Thread Starter