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Basic Brake Hydraulics Fresno CA

Anyone who works on brakes should be familiar with basic hydraulics and the various components that make up the hydraulic portion of the brake system. So if you're not as familiar with this subject as you should be, keep reading and we'll refresh your memory.

Triple A Automotive
(559) 321-7103
906 Barstow
Clovis, CA
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(559) 485-7296
2229 E McKinley Avenue
Fresno, CA
Brownie Muffler Service
(559) 237-2081
3316 E Ventura Avenue
Fresno, CA
D & R Automotive of Fresno Inc
(559) 266-6060
901 M Street
Fresno, CA
Goodguys Tire Center
(559) 221-1438
4140 N Blackstone Avenue
Fresno, CA
Belmont Tire & Automotive
(559) 485-8970
1449 E Belmont Avenue
Fresno, CA
Blackstone Brake & Auto Repair
(559) 264-7863
1558 N Effie Street%2C %23 102
Fresno, CA
Rick's Tire & Service
(559) 485-7970, 001-2004
1501 Fulton Street
Fresno, CA
A & J Auto Repair
(559) 222-3912
4323 N Blackstone Avenue %23 B
Fresno, CA
Goodguys Tire Center
(559) 237-9383
2530 N Weber Avenue
Fresno, CA
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Basic Brake Hydraulics

Anyone who works on brakes should be familiar with basic hydraulics and the various components that make up the hydraulic portion of the brake system. So if you're not as familiar with this subject as you should be, keep reading and we'll refresh your memory.

We'll start at the heart of the system, which is the master cylinder. It converts the force exerted on the brake pedal by the vehicle's driver into hydraulic pressure to apply the brakes. Depressing the brake pedal moves a push rod in the master cylinder. Mounted on the push rod are a pair of pistons (primary and secondary) in tandem (one after the other) to push against the fluid in the master cylinder bore. This creates pressure which displaces fluid because it's incompressible. As fluid is pushed from the master cylinder, it exerts pressure through the brake lines to apply each of the brakes.

When the brake pedal is released, the spring-loaded piston assembly in the master cylinder returns to its rest position. The fluid that was displaced by the pistons is pushed back to the master cylinder as the disc brake pads kick out away from the rotors, and the springs inside the drums retract the brake shoes. The fluid returns to the fluid reservoir through the "compensating ports," which are small openings between the master cylinder bore and fluid reservoir just ahead of each of the pistons.

Master cylinders are divided into two separate hydraulic circuits, with each having its own fluid reservoir and piston. It'...

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