Haldex Modular Dolly System (HMDS) with Brake
Monitoring System (BMS) for Single Axle Dollies
Installation/Service Guide (L31298W)
PAGE 4
Haldex Modular Dolly System (HMDS)
Components - Rear
Pressure Protection Valve
(PPV) with One-way Check
Reservoir Purge
Valve (RPV)
Pressure Protection
Valve (PPV)
Supply to Height
Control Valve
Panel Hanger
(Used on 5 1/4”
C-Channel Only)
Brake Monitoring
System (BMS) Alarm
