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Tech Talk with Master Power Brakes

Got A Soft Brake Pedal? Don't Forget The Booster Pin to Master Cylinder Gap

Posted by Master Power Brakes Team on Feb 26, 2018 10:24:00 AM

A common problem and a question we answer more than we can remember is “Why does my pedal feel soft?” in my power brake system. One of the most overlooked things is probably the simplest fix.

Extending out of the booster is a pin. This pin simply extends into the piston in the back of the master cylinder. Have you ever set this distance? If you answered no, not only is this something you must do, it may be the reason for your soft pedal. Have we confused you? Take a look at the picture below and see if this helps.

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Topics: booster pin, brakes, classic cars, diagnosing and fixing soft pedal, How To Series, soft pedal, master cylinder

Picking the Proper Vacuum Hose For Your Brake System

Posted by toby on Sep 4, 2017 8:00:00 AM

Because we are gear heads, we take every chance to look under the hoods during car shows and swap meets.  One of our guys just got back from a big show and he was surprised by how a mistake he saw so many times. 

To use his words, “How could something like this be wrong on so many vehicles?”

Since we are in the brake business, we notice more things when it comes to a vehicle’s braking system than most classic car enthusiasts. Kind of like the house painter that can’t walk into a room without checking the paint line between the wall and the ceiling.

So what was it that our resident gear head noticed? About half of the vehicles he saw had a power brake booster with the wrong type of hose going from the engine vacuum source to the brake booster.

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Topics: brake systems, brakes, classic cars, How To Series, vacuum hose, Vintage Cars

How To: Diagnose and Fix Brake Drag

Posted by toby on Jun 5, 2017 4:20:00 PM

Whether you’re installing new brakes on your classic car or working on an existing system, brake drag can be a frustrating and challenging thing to diagnose and locate. On a positive note, the problem is usually a pretty simple repair once you find the culprit.

What Is Brake Drag?

Brake drag happens when the brake pads or shoes don’t release completely when the brake pedal is released, and is typically a result of mechanical issues or hydraulics. It is highly recommended to fix the dragging brakes as soon as possible, because it can lead to overheated parts and potential damage to the braking system, or worse yet, an accident.  

Referring to the checklists below will help you identify and repair your brake system’s brake drag woes so you can get back out on the road.


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Topics: brag drag, brake hose, classic cars, how to, How To Series, hyfraulic brake drag, master cylinder, mechanical brake drag, metering valve, repair

Adding Horsepower?  Don’t Neglect Your Brake System

Posted by toby on Jul 30, 2015 2:51:35 PM

Make no mistake about it, most classic car enthusiasts like to go fast.  We spend countless hours in the garage figuring out ways to go faster.  Adding more horsepower guarantees you’ll impress your buddies and have a blast every time you pull away from a red light, but that extra giddy-up can cause some problems too. 

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Topics: brakes, Brakes for Classic Cars & Hot Rods, classic cars, drum brakes, rotors, Vintage Cars, Disc Brakes

Bedding In Brake Pads and Rotors

Posted by toby on Jul 30, 2015 10:23:35 AM

We just received a question from a customer asking about the proper bedding procedure for his new Rallye Series front disc brake conversion kit.  Regardless of which kit you select, it is a good idea to bed or burnish the brakes to transfer an even layer of friction material to the rotors.  Taking this step will ensure smoother, quieter braking and enhanced stopping power.  If you bring the new pads and rotors up to temp too quickly and/or botch the cool down period, you may experience glazing on the pads and poor performance.  Proper bedding ensures a uniform coating of pad material is applied to the rotors.  So, how do we properly bed in new pads and rotors?

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Topics: bedding, Brake Pads, burnishing, classic cars, How To Series, rotors, Vintage Cars

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