This installation manual describes the correct installation procedures for the Haldex PLC Select 1M and 2M for Trailers/Dollies. The PLC Select 1M and 2M may be used with either drum or disc brakes. Care must be taken during each phase of the installation in order to ensure the system is installed correctly.

Remanufactured Meritor/WABCO Style ABS Valves. Rear Axle Valve Packs..... 29 Relay Valve for Valve Packs..... 31

For a 2M System, verify sensor and valve wiring/plumbing is correct. Slow brake release, foundation brake mechanical faults, dry bushings, broken ABS valve, restricted piping. Check for kinks and blockage etc. Incorrect airlines, wiring. Modulator valve solenoid failure, solenoid connection or valve cable damage.

Equip your truck’s anti-lock braking system with a high-quality Haldex ABS electronic control unit for improved traction. This product offers improved reliability to avoid unexpected breakdown and costly downtime.

PLC, PLC Plus and PLC Select systems are available in 2 valve platforms: With a patented Haldex Full Function ABS (FFABS) Valve or an ABS Relay Valve. The differ-ence is that FFABS uses a single valve to provide the ABS function and control the spring (emergency) brakes as well as the service brakes (along with pressure protec-

Part number: AL919342, Brand: HALDEX Price: $1299.00 Free same-business day shipping. Get it tomorrow with UPS next day air delivery! Easy returns and warranty.

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This potted ECU enclosure provides protection from the environment that could damage the unit and contains a wheel-speed sensor and trailer power that connects directly to the ECU. No intermediate cables required. This DIN 12V, SLH-A7 ECU supports all 2S/1M applications and measures 4.25 inches high and 5.5 inches wide.

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Haldex AL919342 - PLC Select 2M Electronic Control Unit (ECU) - DIN Connector, SLH-A7 Software, For use on 4S/2M (or 2S/2M) Valves