303.02.0001.03 Ford Trucks Compatible Multi-circuit Protection Valve Repair Kit

What does a multi-circuit protection valve repair kit do?

This multi-circuit protection valve repair kit is a critical overhaul solution that keeps the service brake, parking brake, and auxiliary circuits of heavy commercial vehicles supplied independently and safely.

Vehicle and engine compatibility

This kit is specifically designed for Ford Trucks models equipped with Ecotorq engines, including the Cargo 2536, 2535, 3238, 2538, 3532, 1832, 3936, 2526, 3232, 3236, 3235, 3536, 1835, 4136, 2532, 1826, and 1838T. These components are also fitted to other heavy commercial vehicles from brands such as Faun, Mercedes-Benz, Solaris, Scania, VDL, DAF, and Iveco.

Installation and maintenance guidance

When performing maintenance on the pneumatic brake system, technicians should ensure the valve housing is thoroughly cleaned before installing the new internal components. It is essential to verify that the diaphragm and O-rings are seated correctly to maintain proper pressure balance between the service and parking circuits. This kit allows for the restoration of internal sealing without the need to replace the entire valve assembly.

Maintenance and troubleshooting

Regular inspection of the valve components helps prevent air pressure loss across different circuits. For optimal performance in heavy-duty applications, always check for signs of leaks or pressure drops in the auxiliary lines during routine service intervals. Check the compatibility list to ensure correct fitment.

OE cross-reference

303.02.0001.03 (Multi-circuit Protection Valve Repair Kit) is the equivalent of the Mercedes-Benz and WABCO OE numbers. This part directly replaces Mercedes-Benz OE number 0004307206. It also replaces WABCO OE number 9347050012.