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How To Bleed Air Out Braking System On Tata 407

Bleeding the brakes is an inevitable part of DIY automotive repairs. Air can enter the brake system during repairs, but the more common reason is far more insidious. Brake fluid is hygroscopic and readily absorbs water from the atmosphere. Water in the brake fluid lowers its boiling point. Heat boils the brake fluid, and the resulting steam leaves air in the lines. Brake fluid is incompressible while air is easily compressed and manifests as a spongy brake pedal or worse.

Meanwhile, contaminated brake fluid attacks rubber, iron, and steel. Black gunk in the reservoir means the war against hoses, caliper piston seals, and wheel cylinder seals is well underway. Repairs caused by rotten brake fluid let in more air, and all of it leads back to bleeding the brakes, a required and universally loathed task that almost always leaves one pondering a better way while lying under the car in a cold toxic soup of brake fluid and rust.

As such, we’ve put together five different ways to get old brake fluid and air out and fresh brake fluid in. No matter the method, the prep is the same: soak the bleed screws in penetrating oil, siphon as much rotten crud out of the reservoir as possible, add fresh brake fluid, start with the bleed screw furthest away from the master cylinder, and work back to the closest one. Along with being poisonous, brake fluid destroys paint, so keep a large bucket or plentiful supply of cool, clean water nearby and immediately flush any spills.

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