B only
The primary piston in a master cylinder is located within the cylinder itself and is responsible for generating hydraulic pressure when the brake pedal is engaged. It moves forward to push brake fluid through the brake lines to the brake calipers or wheel cylinders. This piston is typically the larger of the two pistons found in a dual master cylinder system, with the secondary piston handling the rear brakes. The design ensures that the primary piston creates sufficient pressure for effective braking performance.
The primary cup of a master cylinder piston serves as a seal that prevents brake fluid from leaking out of the master cylinder while also allowing the piston to create hydraulic pressure when the brake pedal is pressed. It ensures that the brake system maintains the necessary pressure for effective braking, while also helping to return the piston to its original position when the brake is released. Proper function of the primary cup is crucial for the reliability and safety of the braking system.
Bench Technician
its either,AActivate the secondary piston if primary pressure is lostB.Equalize pressure between the primary and secondary circuitsC.Allow for the normal expansion and contraction of brake fluid due to temperature changesD.Assist in the rapid return of the brake pedal when it is released
A fast-fill valve in a master cylinder acts as the inlet port and the compensating port. fitted between the reservoir and the cylinder bore. It is a combination valve with a ball and a pressure seal. Depending on the pressure, it allows flid to flow from the large bore of the cylinder to the reservoir, or from the reservoir into the large bore.
Bench technician
Mechanical pressure from the primary piston
Bench Technician
The primary difference between a master and a slave cylinder is which one make the other one work. We operate the master cylinder to make the slave cylinder work. The master cylinder on a hydraulic clutch is actuated by pushing on the clutch pedal. The hydraulic pressure then makes the clutch slave cylinder move and it pushes out to give the throw-out arm a shove. This will disengage the clutch from the flywheel (by actuating the pressure plate). the master cylinder is on the fire wall its the main one, when you push on the brake pedal down it pushes on a rod in the master sylinder. the wheel cylinders (slave) are on the dram drums. they push the brake shoes to the drum
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Help-desk technician Remote support technician Call center technician Jean Andrews A+ Guide to Software Managing, Maintaining, and Troubleshooting P 640
Brake booster pushrod