Tech Tip: Failed Booster Seal Causes Master Cylinder Leaks – UnderhoodService

Main Navigation

Advertisement
Social Connect
Resources
Our Brand Family
Underhood Service Logo
Technical resources to help diagnose and repair engine-related service issues.
Post

Tech Tip: Failed Booster Seal Causes Master Cylinder Leaks

Chronic master cylinder failure due to fluid leaking past secondary seal in the master cylinder bore could be caused by a defective master cylinder pushrod seal in the power brake booster allowing vacuum to draw fluid past secondary seal of the master cylinder. Replace both master cylinder and power brake unit ....

Underhood Service Staff Writers
By Underhood Service Staff Writers
Published:

Problem: Vehicles equipped with power brake booster assemblies.

Related Articles

Cause: Chronic master cylinder failure due to fluid leaking past secondary seal in the master cylinder bore. A defective master cylinder pushrod seal in the power brake booster allowing vacuum to draw fluid past secondary seal of the master cylinder.

Solution: Replace both master cylinder and power brake unit.

Note: When replacing brake components, always flush entire brake system with approved brake fluid from a sealed container.

Tech Tip courtesy of Cardone.

For additional information on products offered by Cardone, visit www.cardone.com.

You May Also Like

External Engine

Supercharger Pros And Cons

Customers generally look to superchargers for the instant throttle response, not fuel economy.

Underhood Service Staff Writers
By Underhood Service Staff Writers
Published:

Superchargers are synonymous with making horsepower, especially in drag racing, gaining popularity and recognition as a viable power adder. However, they’re not the best option for saving fuel.

While most automakers are currently fascinated with employing turbochargers to make up for lost horsepower due to lower-displacement engines, do superchargers have a place in the current automotive climate? Indeed, this power-adder is more commonly found in the performance arena, because it produces power at lower rpm and comes in a smaller package than a turbocharger. But there are some downsides.

Read Full Article

More Posts
Continental Releases 67 New Part Numbers

Twenty-two new import part numbers, as well as 39 new pulley and tensioner part numbers, are immediately available.

By Underhood Service Staff Writers
Standard Motor Products Introduces 268 New Numbers

The release provides new coverage in 75 product categories and 80 part numbers for 2023 and 2024 model-year vehicles, SMP said.

By Underhood Service Staff Writers
Toyota Explores Lithium-Ion Battery Recycling

The joint research project seeks to utilize a new process for recovering critical battery materials.

By Underhood Service Staff Writers
Ignition Coil Output

To see inductance inside the primary windings, use an amp probe placed around the positive wire for the ignition coil.

By Andrew Markel

Other Posts

Plastic Timing Chain Guides

Timing chain guides are designed to wear, but the guides are designed to last the engine’s life.

By Andrew Markel
Honda to Establish EV Value Chain in Ontario, Canada

It will strengthen EV supply system and capability with an eye toward a future increase in EV demand in North America, Honda said.

By Underhood Service Staff Writers
PRT Launches 30 New Complete Strut Assemblies

The new items represent more than 10 million vehicles in new coverage, PRT said.

By Underhood Service Staff Writers
BCA Bearings Unveils 2024 Endless Summer Promotion

The Endless Summer promotion runs from May 1 through June 30, 2024.

By Nadine Battah