Genuine Acura Brake Booster

Acura Brake Booster Parts Questions & Experts Answers

• Master Power Assembly (8"+9")
  46400-S84-E01
  Q: How can the brake booster be diagnosed on an Acura Integra's brake system?

  A:

  The brakes have to be checked every time the wheels are taken off or when there is a suspicion of defect besides the recommended periods. Some signs that a brake system is defective are: the car veers towards one side on pressing brake pedal; brakes produce screeching and dragging noise during application; brake pedal travel is excessive; brake pedal pulsates on application; brake fluid leaks, usually onto the inside of the tire or wheel. For disc brakes inspection, loosen wheel lug nuts, raise vehicle and secure it with jackstands and then remove wheels. As seen through inspection holes each caliper contains two pads. Replace pads if their thickness is less than specified thickness. It is advisable to clean pads using a brake cleaner and re-measure them later on. And if the disc's thickness is smaller than minimum specified value, replace it. Before fitting wheels check out all damages in braking lines as well as hoses such as wear, deformation, crack, corrosion leakage deformations bends twists etc. To loosen drum on outside tap it twice before taking out drums and cleaning them up . Notice how thick lining material on front and rear shoes respectively is and change it corresponds to this figure if necessary. Wipe inside of drum clear any trace of fluid leakage from its surface at this point in time No cracks should be detected within drum's structure exactly near any scoring marks deep scratches nor "hard spots" which may require resurfacing anywhere at all Repeat this process for another wheel too In order to check booster of your brakes you can start an engine while holding down a break just for it move slightly downward By depressing a break pedal several times we want its travel distance not changing Turn off everything including engine for 30 seconds but do not allow your foot go free After about one minute of restarting an engine press hard more than 4 times releasing a break between each move until peddle would no longer be moving down If your brakes do not work as described the brake booster has failed. Pull up on a parking lever slowly while counting number of times such movement made until it could go no further This is correct if there are specified numbers of clicks Another method is to park the vehicle on a steep hill with the parking brake set and the transmission in Neutral If it does not hold the vehicle from rolling then adjust it.
• Power Assembly, Master (10") (Nissin)
  46400-SD4-013
  Q: What Are the Key Steps and Inspections for Regular Brake Booster Maintenance and Diagnostics on Acura Legend?

  A:

  It is crucial that brake inspections are done at specific times and regular basis as brakes are important in vehicle safety. Potential system problem symptoms could be; the occurrence of a car being pulled to one side while braking, whistling or disc dragging, excessive brake pedal travel, pulsation felt on pedal or loss of fluid from the hydraulic system. Disc Brake Pads incorporate built-in wear indicators that produce high-pitched noise when they get to the stage where replacement becomes urgent hence preventing expensive damage to rotors. Inspect disc brakes by checking pad thickness through caliper inspection holes and replace pads below the specified thickness. If unsure or worried about their condition remove and clean them for a detailed check using friction material gauges. At the same time assess rotor thickness and replace it if it falls below the minimum specification, look for scoring, gouging, or burned spots which necessitate resurfacing if required. Check thoroughly for any damages that have occurred during installation including leaks and sores before attaching wheels onto such vehicles' systems like brake lines and hoses against fitting specifications among others. After removing rear drum brakes, examine lining thicknesses, contamination levels as well as overall conditions. The installation process of shoe return plus hold-down springs and adjusting mechanism must be followed correctly too and wheel cylinder leakage or cracked drums must also be addressed properly. Finally, perform tests on booster for brakes then evaluate parking capability by counting clicks upon pulling up or carrying out a hill test for effectiveness after making necessary adjustments.
• Power Brake Booster
  01469-SEP-A00
  Q: How to perform an operating check and install a new Brake Booster on an Acura TL?

  A:

  To perform an operating check, depress the brake pedal several times with the engine off to ensure there is no change in the pedal reserve distance, then start the engine; if the pedal goes down slightly, operation is normal. For an airtightness check, start the engine and turn it off after one or two minutes, then depress the brake pedal several times slowly; if the pedal goes down farther the first time but gradually rises after the second or third depression, the booster is airtight. While the engine is running, depress the brake pedal and stop the engine with the pedal depressed; if there is no change in the pedal reserve travel after holding the pedal for 30 seconds, the booster is airtight. Disassembly of the power unit requires special tools and is not ordinarily performed by the home mechanic; if a problem develops, it's recommended that a new or factory rebuilt unit be installed. To remove the booster, first remove the brake master cylinder, then disconnect the hose leading from the engine to the booster, being careful not to damage the hose. For 2003 and earlier models, remove the two mounting bolts for the bracket that secures the fuel line above the booster, the starter cable retainer, and the mounting bolt for the bracket that secures the windshield wiper relay above the booster. For 2004 and later models, remove the air filter housing and detach the brake lines from the clip against the firewall. Working inside the vehicle, locate the pushrod clevis pin connecting the booster to the brake pedal and remove the lock-pin and clevis pin to disconnect the pushrod from the pedal, then remove the four booster mounting nuts holding the brake booster to the firewall. Working outside the vehicle, carefully guide the booster out until the studs and pushrod clevis clear the holes in the firewall, then remove the booster from the engine compartment, taking care not to bend any brake lines or damage the booster studs. If a new power brake booster unit is being installed, measure the length of the pushrod from the center of the clevis hole to the booster's mounting surface, including the gasket in the measurement, and compare it with the required value. Check and adjust the booster pushrod-to-master cylinder clearance to avoid brake drag or excessive brake pedal travel. Using a hand-held vacuum pump, apply a vacuum of 30 in-Hg to the booster and measure the pushrod protrusion from the master cylinder mounting surface, then measure the distance from the mounting flange to the end of the master cylinder and from the end of the master cylinder to the bottom of the pocket in the piston. Subtract the measurements to determine the pushrod clearance, which should be zero; adjust the pushrod length as necessary. For 2004 and later models, install the booster, tighten the retaining nuts, and connect the pushrod to the brake pedal using a new lock-pin. Install the master cylinder and brake hoses and lines, adjust the brake pedal freeplay, and bleed the brakes. The remainder of the installation is the reverse of removal, ensuring to tighten the booster mounting nuts and use a new lock-pin for the clevis pin. Finally, check and adjust the brake pedal height and carefully test the operation of the brakes before placing the vehicle into normal service.