LP4985 KNORR-BREMSE Twin Cylinder, Air Compressor

The twin cylinder air compressor is a vital component within the pneumatic braking system of heavy commercial vehicles. This unit is engineered to provide high-pressure air for braking and suspension systems through a robust two-cylinder architecture. Designed with heavy-duty grade materials, it ensures consistent air delivery and operational stability in demanding environments.

LP4985 is the OE-equivalent of the KNORR-BREMSE LP4985 air compressor used in specialized heavy commercial vehicle systems. This component features a cylinder bore of Ø88.00 and a stroke of 50 mm, producing a swept volume of 608cm³. It is specifically designed for compatibility with KNORR-BREMSE hardware and meets the technical requirements for reliable system pressure.

For workshop technicians, this assembly includes an optimized water-cooled design with a water inlet and outlet port of M16x1,5. The integration of the ESS feature and a water-cooled valve plate ensures thermal stability during intensive use. Maintenance should focus on ensuring the air unloader port (M22x1,5) and outlet ports are free from debris to maintain optimal pneumatic performance.

The assembly process requires precision to ensure the through-drive and connection points like the M26x1,5 outlet are properly seated. Regular inspection of the water cooling lines and port integrity is recommended to prevent overheating and maintain the integrity of the air brake system.