8113003 Volvo NH12 Twin Cylinder Compressor

What does a twin cylinder compressor do?

This twin cylinder compressor serves as a critical component within the air brake system, converting mechanical energy into pneumatic pressure. Built with high-strength components, it is engineered to withstand the rigorous thermal and mechanical stresses found in heavy commercial vehicle applications. The unit features a water-cooled design to maintain optimal operating temperatures during continuous service.

Vehicle and engine compatibility

This specific model is designed for compatibility with Volvo NH12 trucks equipped with D12A engines. It integrates seamlessly into the engine's drive system, utilizing its through-drive capability to ensure consistent air delivery. This part is an essential replacement for maintaining the pneumatic integrity of the vehicle's braking and suspension air supply.

Installation and maintenance

Installation requires careful attention to the M26x1,5 air outlet port and the M16x1,5 water inlet/outlet ports. Technicians should verify that all connections are secure to prevent pressure drops or coolant leaks. Regular inspection of the water-cooled valve plate and unloader ports is recommended to ensure long-term reliability.

Troubleshooting guidance

Maintaining correct coolant flow through the water inlet and outlet ports is vital for preventing overheating. If air pressure builds slowly or fluctuates, check the unloader port and valve plate condition.

OE cross-reference

1300 050 003 (Twin Cylinder Compressor) is the equivalent of the Volvo OE number. This part directly replaces Volvo OE number 8113003.