ABS System and Components

Raybestos Brakes
Raybestos Brakes
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In this video, we show you how small the passageways are in the ABS unit valves. This will give you an idea of how easy it is for even small pieces of debris to get stuck in these passageways.

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In a previous video, we talked about the importance of clamping off the brake hose before pushing the caliper piston in during a brake job. If you don't clamp off that hose, all of the debris that collected inside of the caliper back up the hose into the ABS unit. This can lead to a low brake pedal and brake pull.

When we talk about the debris that gathers in the hydraulic system, we aren't typically talking about dirt. The debris we are talking about is:

1.) The tiny pieces of rubber that come off the rubber components like the square cut seal in the caliper.
2.) The rust and corrosion that develops in the metal pieces of the hydraulic system.

All of this debris goes downstream in the brake fluid and collects in the caliper.

Some valves have screens on them to protect from debris getting stuck in the ABS valves. However, those screens can become clogged with debris if enough is pushed into the ABS system.

Other valves, like the dump valve found in RWAL brake systems, has a tiny opening to it. This valve opens and closes frequently to release pressurized fluid into the accumulator. This opening to the valve is so tiny, that debris can easily get caught in it. This debris can prevent the dump valve from closing, which results in a spongy brake pedal.
6 سال پیش در تاریخ 1397/02/07 منتشر شده است.
29,994 بـار بازدید شده
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