The WG9000360661 is a diaphragm spring brake chamber designed for the intermediate axle of Howo 430 series trucks. It is a service part used in the air brake system, with a total length of 220mm as indicated by the "L=220" designation.

1. Installation Location
This brake chamber is installed on the intermediate axle of Howo 430 trucks. It is mounted to the axle housing via bolts, with its push rod connected to the brake slack adjuster. The installation interface follows standard brake chamber mounting dimensions.

2. Function
The unit combines service brake and spring brake functions in one housing. The service brake side uses compressed air to push the diaphragm and apply the brakes during normal driving. The spring brake side uses a powerful spring that automatically applies the parking brake when air pressure is released, and also serves as an emergency brake in case of system pressure loss.

3. Maintenance and Service
Regular inspection includes checking the diaphragm for cracks or wear, inspecting the push rod boot for damage, and ensuring all mounting bolts are secure. If the diaphragm fails or the chamber shows signs of leakage, the unit should be replaced as a complete assembly. This component contains a high-force spring under tension; disassembly should only be performed by qualified personnel with proper safety equipment. When replacing, ensure the correct "L=220" specification is used.

4. Important Notes
Always fully drain the air brake system pressure before removing or installing this brake chamber. Verify the part number WG9000360661 matches the original component. Ensure all air line connections are properly sealed after installation and test brake function before returning the vehicle to service.