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The Goodyear 9524161-1 Brake Piston Lining is a high-temperature insulator designed for Goodyear 5.00 x 5 brake assemblies, including Cessna 150 applications. Installed behind the brake piston, this piston lining helps protect the hydraulic system by reducing heat transfer from the brake disc and linings. By preventing excessive heat from reaching the piston and brake fluid, it supports reliable braking performance and helps reduce the risk of fluid boil and brake failure.
| General Information | |
|---|---|
| Part # | 9524161-1 |
| Manufacturer | Goodyear |
| Shipping Information | |
|---|---|
| Schedule B | 4011300000 |
| ECCN | 9A991.d |
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AIRCRAFT COMPATIBILITY
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QUESTIONS & ANSWERS
The 9524161-1 brake piston lining acts as a thermal barrier within the aircraft brake assembly. It reduces heat transfer from the brake linings and disc to the aluminum piston and hydraulic fluid. This insulation helps maintain braking performance and prevents brake fluid from overheating during taxi, takeoff, or landing.
This Goodyear brake piston lining is used in 5.00 x 5 brake assemblies, including systems found on certain Cessna 150 aircraft. It is specifically associated with assembly number 9532302. Operators maintaining legacy Goodyear wheels and brakes often require this replacement part.
Aircraft brakes generate significant frictional heat during operation, especially during landing roll and heavy taxiing. Without proper insulation, that heat can transfer to the piston, causing the hydraulic brake fluid to boil. Boiled fluid can cause brake fade or a total loss of braking power, making thermal protection critical.
Yes, the brake piston lining is a consumable component within the brake assembly. It should be inspected during brake servicing and replaced if there are signs of heat damage, distortion, or wear. Many technicians replace it alongside brake linings and discs as part of preventative maintenance.
A brake lining creates friction against the brake disc to slow the aircraft, while the piston lining serves as an insulator behind the piston. The two components perform different but complementary roles within the brake system. The piston lining focuses on protecting the hydraulic system from excessive heat.
Goodyear piston linings are made from high-temperature insulating materials engineered to withstand intense brake heat. These materials are designed to maintain structural integrity under repeated braking cycles. Their purpose is to shield seals and hydraulic components from thermal stress.
If the piston lining is cracked, deformed, or heat-compromised, it may no longer provide adequate insulation. This can increase the risk of brake fluid overheating and potential braking issues. Replacing damaged linings helps ensure safe and consistent aircraft brake performance.
The piston lining should be inspected whenever brake linings or discs are serviced or replaced. Routine inspections during scheduled maintenance help identify early signs of heat distortion or wear. Proactive replacement supports long-term brake reliability.
While it does not create friction like a brake pad, the piston lining directly supports braking efficiency by protecting the hydraulic system. By preventing fluid boil and maintaining seal integrity, it helps ensure consistent brake response. This makes it a critical safety component within the aircraft braking system.
Using the correct part number, such as the 9524161-1 piston lining, ensures compatibility with specific Goodyear brake assemblies. Proper fit and material specifications are essential for effective heat insulation and safe brake operation. Installing approved replacement parts helps maintain compliance and system reliability.
