SDLG L975F BRAKE VALVE 4120005158 CONTROL VALVE 06-466-435

OEM Part Number: 4120005158
Standard Name: Series Brake Control Valve (Dual-Circuit Air Brake Foot Valve)
Common English Name: Brake Control Valve / Foot Brake Valve / Brake Valve
Compatible Models: SDLG L975F, LG968F 7-ton heavy-duty loaders (standard equipment on the original vehicle)
Quantity per Vehicle: 1 piece/vehicle
Code Explanation: The prefix 4120 indicates Lingong hydraulic/pneumatic valve accessories, belonging to the core main control valve of the vehicle's braking system.
II. Structure and Working Principle
The L975F adopts a dual-circuit safety braking system. This valve is an integrated series valve:
Two independent air outlets control the front axle brake booster pump and the rear axle brake booster pump respectively;
If one air circuit fails, the other can still brake normally, providing redundant safety design for heavy-duty mining applications;
Integrated pedal mounting base and brake light pressure sensor switch; pressing the pedal outputs air pressure to drive the four-wheel disc brake calipers (4110015302). III. Complete Vehicle Braking System (Series Connection)
Air Reservoir → 4120005158 Master Brake Valve → Front and Rear Brake Booster Pumps → Brake Lines → Brake Caliper 4110015302 → Brake Pads 4110015302009 → Brake Disc 29070200451

Major Chassis Components: ZF 4WG208 Transmission, 29070200551 Rear Final Drive, 29070200431 Wheel-End Reducer, 4110015663 Wheel Rim, 26.5-25 Tires