Meritor WABCO -- Products -- Electronic Leveling Modules

The Meritor WABCO ELM is designed to electronically sense and control the tractor rear air suspension during operation. The ELM supplies air to the suspension only when needed. This results in optimum control of tractor ride height with minimal parasitic compressor load on the engine.

Features	Benefits
Premium aluminum valve body with heavy-duty internal solenoid valving	Longer life, less maintenance
Large internal air passages and valves	Rapid raising and lowering of rear suspension height when required for quick trailer coupling/uncoupling
Weather-resistant, electronic, bayonet-type connector ports	Ensure internal electronics are protected from shorting or malfunctions caused by the intrusion of moisture
Electronic inductive height sensor and automatic return-to-ride height at preset vehicle speed after suspension air dump	Controls ride height; optimized driveline angles; reduced vibration and wear on drivetrain components
Electronically-controlled solenoid valves	Reduces air consumption by suspension, lowering wear cycles on air system components to help extend compressor life. Maximum available driveline power with reduced fuel consumption
Optional pressure sensor	Monitors rear axle load

ELM for Trailers

The Meritor WABCO ELM is designed to electronically sense and control the trailer air suspension during tractor-trailer operation. The ELM supplies air to the suspension only when needed. This results in optimal control of trailer ride height with minimal parasitic compressor load on the engine.

Features	Benefits
Premium aluminum valve body with heavy-duty internal solenoid valving	Longer life, less maintenance
Large internal air passages and valves	Rapid raising and lowering trailer height when required to reduce loading and unloading times
Weather-resistant electronic bayonet-type connector ports	Ensure internal electronics are protected from shorting or malfunctions caused by the intrusion of moisture
Electronic inductive height sensor	Accurate control of trailer ride height
Automatic return to ride-height at pre-set vehicle speed after suspension air dump	Helps prevent suspension bottoming or exceeding height regulations
Electronically-controlled solenoid valves	Reduces air consumption by suspension, lowering wear cycles on air system components to help extend compressor life. Maximum available driveline power with reduced fuel consumption
Optional pressure sensor	Monitors axle load

Tractor and trailer ELM dimensions. Trailer ELM is available with an optional remote control pad.