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

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

Single vs. Dual Reservoir Master Cylinders

Posted by toby on Apr 24, 2015 9:22:56 AM

When it comes to brakes, you need think of a complete system consisting of components working together to stop your vehicle.  As brake systems evolved from 4 wheel drum systems to rear drum/front disc combinations, the design of the various components making up the system changed in order to keep pace with the new technology.  One of the best examples of this is illustrated by the changes in master cylinder design.

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Topics: drum brakes, dual master, single reservoir master, Vintage Cars, Classic Car Brakes, Disc Brakes, master cylinder, Master Cylinder

Master Cylinder FAQ’s For Classic Car Owners

Posted by toby on Jan 6, 2015 9:33:40 AM

The master cylinder is a critical component of your brake system.  Should a master cylinder fail, we have a safety problem that is even more compounded if you are driving a classic car with a single reservoir master cylinder. In addition to our own safety, we also endanger the drivers sharing the road with us.  This post offers a brief description of how the master cylinder works, explains why the unit may fail, and offers some answers to commonly asked questions. 

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Topics: brake systems, brakes, classic cars, Vintage Cars, master cylinder, Master Cylinder

How To Series: Syringe Bleeding the Master Cylinder

Posted by toby on Mar 20, 2014 9:07:34 AM
Plastic Syringe for Bleeding Brakes

Some of our customers wonder why we include syringes with our disc brake conversion kits and how to use them.  This illustrated post explains brake system syringes and how to use them.

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Topics: bench bleeding, how to, How To Series, combination valve, master cylinder

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