Modulator Valve –controls air pressure to foundation brake(s) during a ABS, ATC and ESC event to prevent wheel lock up or reduce a wheel overspeed condition
Pressure Modulator Valves A modulator valve controls air pressure to an affected wheel-end brake during an ABS or ESC event to reduce speed and prevent wheel lock-up. Modulator valves are also used during ATC events to correctly gain traction on the affected wheel end.
An electronic control unit (ECU) receives and processes signals from the wheel speed sensors. When the ECU determines a wheel lockup condition, the unit activates an appropriate modulator valve, and air pressure is reduced. When the wheel speed enters the stable region again, the pressure is automatically increased.
Allow the solution to flow between the brake drum and the brake support or the brake rotor and caliper. The wheel hub and brake assembly components should be thoroughly wetted to suppress dust before the brake shoes or brake pads are removed.
Meritor WABCO® Antilock Braking System - Public Technical …
During emergency braking, the modulator valve alternately reduces, increases, or maintains air pressure supply in the brake chamber to prevent front and rear wheel lockup. The Meritor WABCO ABS combines one front-axle control channel with one rear-axle control channel to form one control circuit.
This manual describes the correct service, replacement, installation and operation procedures for WABCO anti-lock braking systems for trucks, tractors and buses. Read and understand all instructions and procedures before you begin to service components. Read and observe all Warning and Caution hazard alert messages in this publication.
Wabco 5 Port ABS Combo Modulator Valve - Truckliner Parts
Wabco 5 Port ABS Combo Modulator Valve. Modulator Valve, Antilock Brakes, ABS Combo, 5 Port, Automatic Traction Control, 5.5 psi. P/N: 9760001030 / WAB 976 000 103 0. System Type: 4S/4M; Voltage: 12 V. Ampere Rating: 2220 mA. Port 1 & Port 21 Thread Size: 1/2"-14 NPTF. Port 4 & Port 25 Thread Size: 3/8"-18 NPTF. Connection Type: HDSCS Code A ...
Modulator Valve - Antilock Brakes, Abs Combo, 6 Port, Automatic ...
Looking for the OEM Wabco Modulator Valve - Antilock Brakes, Abs Combo, 6 Port, Automatic Traction Control, 4.0Psi 976-000-110-0? Find it and many more Wabco parts at the lowest prices at Big Rig World!
Meritor Wabco Antilock Brake Modulator Valve, ABS Combo, 6 …
The WAB 976 000 105 0 is a valve called a modulator specifically designed for use in anti-lock brake systems (ABS) with automatic traction control. This valve, which has six ports, plays a vital role in regulating the brake pressure within the ABS system.
ABS System | Peterbilt Brake Parts & Components
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