8112851 Compatible Twin Cylinder Compressor for Volvo NH12

What does a twin cylinder compressor do?

This twin cylinder compressor serves as a critical component within the pneumatic braking system of heavy commercial vehicles. By utilizing high-strength components, it provides the necessary air pressure required for consistent brake actuation and system stability. The design focuses on durability under heavy-duty operating conditions to prevent system failures.

Vehicle and engine compatibility

This specific model is engineered for Volvo NH12 trucks equipped with D12A engines. It functions effectively within the vehicle's air system, ensuring that the pneumatic requirements of the engine and braking assembly are met through stable air delivery.

Technical specifications and installation

Technical specifications include a Ø88.00 mm cylinder bore and a 50 mm stroke, providing a 608cm³ swept volume. The unit features water cooling with M16x1,5 inlet and outlet ports, an M26x1,5 air outlet port, and an M22x1,5 unloader port. Proper installation requires verifying the through-drive configuration and checking all connection threads to ensure a leak-free seal.

Maintenance and troubleshooting

Regular inspection of the water-cooled valve plate and air inlet ports is recommended to prevent buildup that could affect performance. Maintaining correct coolant levels helps ensure the compressor operates within optimal temperature ranges during long-haul service.

OE cross-reference

1300 050 005 (Twin Cylinder Compressor) is the equivalent of the Volvo OE number. This part directly replaces Volvo OE number 8112851.