20701801 FH 500 Twin Cylinder, Air Compressor — VOLVO

This heavy-duty Twin Cylinder, Air Compressor is engineered to provide consistent air pressure for critical pneumatic systems in heavy commercial vehicles. Featuring a robust construction, the unit utilizes a Ø85.00 cylinder bore and a 62 mm stroke to achieve a swept volume of 704cm³. The water-cooled design ensures optimal thermal management during operation, maintaining system stability under demanding service conditions.

20701801 is the OE-equivalent of the VOLVO 20701801 Twin Cylinder, Air Compressor used in the VOLVO FH 500. This component is specifically designed to meet the rigorous demands of the vehicle's air brake system architecture. It features an M26x1,5 air outlet port and an M12x1 air unloader port, ensuring seamless integration with existing heavy-duty pneumatic hardware.

Workshop technicians should note that this unit is a water-cooled (W) type, requiring specific attention to the M16x1,5 water inlet and outlet ports during installation. Proper torque application on the M26x1,5 outlet and ensuring the water cooling circuit is correctly connected are essential for long-term reliability. The assembly includes an ESS feature and a water-cooled valve plate to enhance durability during high-load cycles.

Maintenance of the air brake system requires regular checks of the compressor's port connections and cooling efficiency. Ensuring that the Ø35 air inlet port remains free of debris will help maintain the intended performance of the 704cm³ swept volume system.