Genuine BMW 335i Brake Master Cylinder

BMW 335i Brake Master Cylinder Parts Questions & Experts Answers

• Brake Master Cylinder
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  Q: How should brake fluid be disposed of properly and How to remove and reinstall the brake fluid reservoir and master cylinder on BMW 335i?

  A: Brake fluid is toxic for the environment and it can cause corrosion therefore, it needs to be disposed of. The following process should be used to start the procedure; First, you have to take off the cabin microfilter housings and the left lower dashboard trim. Remove the brake fluid level sensor connector that is fixed on the brake fluid reservoir situated at the left rear of the engine compartment; unscrew the reservoir cap. When performing brake service use a new syringe to suck out the brake fluid reservoir and block all open brake fluid line and duct to avoid any leak and contamination. Pull the brake fluid reservoir sideways up and out of the two grommets. Relieve pressure in the brake booster by unbolting and separating the brake pedal from the push rod. Remove the brake master cylinder brake fluid, pull out the brake lines from the brake master cylinder and plug the ends to avoid contaminations, thereafter, unbolt the brake master cylinder from its mounting studs. When reinstalling be careful to check that nuts, fluid couplings, thread bores and mating services are clean. Install the brake master cylinder to the brake booster with a new sealing O-ring in place and tighten self-locking nuts; additionally, link the brake master cylinder pushrod and booster pushrod. Do not apply too much pressure when tightening the mounting nuts to guard against damaging the brake booster and in the process, causing a poor vacuum creation. Secure the brake master cylinder then fit the brake fluid lines, refit the fluid reservoir with new sealing grommits and secure the brake booster. The rest of the removal is done in the reverse order to the installation and it is recommended that new brake fluid is to be added as well as the entire brake system to be flushed.