Dongfeng GX truck parts left air chamber repair kit K260854K50

The kit includes all necessary parts to fully repair the left air chamber, eliminating the need to source individual components. Core items feature: 1 high-durability rubber diaphragm (resistant to air pressure and oil), 2 nitrile rubber piston seals (for airtight cylinder sealing), 4 corrosion-resistant stainless steel washers (for even load distribution), 2 return springs (to ensure proper piston retraction), and a tube of high-temperature brake grease (10g, formulated for air chamber components). Additionally, it comes with a detailed instruction sheet with step-by-step diagrams of the Dongfeng GX’s air chamber assembly, guiding technicians through disassembly, part replacement, and reassembly. This all-in-one set ensures a thorough repair in one session, reducing truck downtime

The kit’s key components use high-performance materials to withstand the harsh conditions of brake air chamber operation. The main diaphragm is crafted from chloroprene rubber (CR), which resists degradation from compressed air, brake fluid, and road salt—maintaining elasticity in temperatures ranging from -40°C to 120°C. Unlike standard rubber diaphragms that crack after 6–12 months, this CR material endures 500,000+ air pressure cycles without leaking. The piston seals are made of nitrile-butadiene rubber (NBR) with a Shore A hardness of 70, ensuring a tight seal against the cylinder bore while minimizing friction. These materials prevent air leakage— a major cause of brake failure—extending the air chamber’s service life by 2–3 times

Engineered to streamline air chamber repair (even for technicians with limited experience), the kit includes user-friendly features. The diaphragm has pre-marked alignment notches that match the air chamber’s housing, ensuring correct positioning without guesswork. The return springs are color-coded to indicate installation direction, avoiding reverse fitting errors. The instruction sheet highlights critical torque values (e.g., 12–15 N·m for housing bolts) and includes troubleshooting tips for common issues (e.g., air leakage testing). All components are packaged in labeled compartments, making it easy to identify and access parts during repair. These features reduce the average repair time by 35% compared to generic kits, enabling faster vehicle turnaround

By replacing worn air chamber components, the kit fully restores the Dongfeng GX’s left brake performance—critical for heavy-duty safety. Worn diaphragms or seals cause air leakage, leading to delayed brake response, reduced braking force, or even brake failure. The kit eliminates these risks by ensuring airtight operation, maintaining consistent brake pressure and actuation speed. The restored air chamber also ensures proper brake shoe retraction, reducing drag and extending brake shoe life by 20%. The kit complies with international brake safety standards (e.g., ECE R13, FMVSS 121) and is manufactured in an IATF 16949 certified facility. Backed by an 18-month warranty against defects (e.g., diaphragm tearing, seal leakage), it provides Dongfeng GX truck owners with reliable brake system protection and long-term peace of mind