How Are Aircraft Brake Lining and Disc Brakes Replaced?

All aircraft necessitate routine maintenance and regular checks to ensure that they are working optimally. During these checks, parts are examined for flaws, aircraft surfaces are assessed for wear, and components may even be replaced or repaired. However, not all parts can be reused and instead must be replaced. For instance, the brake lining and disc brakes must be replaced as they can deteriorate over time. 

To replace the linings, the old ones must be removed first. This process will necessitate the use of brake riveting tools that are specifically designed to punch out old rivets and make new ones. If the proper tool is not used, one can incorrectly elongate the rivet holes and damage the pressure or backing plates. Furthermore, if the rivets are set with a hammer, one can crack the brake lining. 

Once the right tools have been acquired, using them properly is paramount. Begin by positioning the backing or pressure plate in the tool and screw down the shaft until the rivet is punched out. To install the new linings, remove the punch-out adapter from the tool, place a new rivet in the hole via the new liner, and turn the shaft until the rivet is secured in place. Always consult the manufacturer’s manual when conducting break-in procedures for new brakes. 

In terms of the brake discs, one must consult the manufacturer’s maintenance manuals to determine the wear tolerances. Nonetheless, rusted, pitted, corroded, or warped discs should always be replaced. Once the wheel has been removed from the aircraft, deflate the tire completely. This step is integral to the safety of aircraft technicians. Next, remove the through bolts in the wheel in order to remove and replace the disc. 

Keep in mind that any remaining pressure in the tire can cause the wheel to explode in one’s face during the removal of the bolts. As such, this process should be handled with care. While changing a tire is categorized under preventative maintenance, changing a brake disc is not. That being said, this entire operation can be carried out without needing the approval of an A&P. However, if the wheel is reassembled with a new disc, you will be in violation of federal aviation regulations without the supervision of an A&P. 

With an array of brake discs on the market today, selecting a new type of disc can be difficult. Before making a purchase, one must consult the brake manufacturer to ensure compatibility within the assembly. While some discs offer corrosion-resistant properties, others have increased load capabilities. When sourcing aircraft brake discs, aircraft brake lining components, and other related items, rely on Unlimited NSN.

Unlimited NSN is a leading distributor of aircraft disc brake parts, all of which are subjected to varying levels of quality assurance measures, tests, verifications, and assessments. Kickoff the procurement process with a competitive quote and see why customers choose Unlimited NSN for all of their operational needs. For additional inquiries, call or email us directly; we are available 24/7x365!


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