Haldex Modular Dolly System (HMDS) with Brake Monitoring System (BMS)
Dolly ABS Module System:
Height 15” x Length 20”
Weight:
Less than 35 lbs.
Configuration:
2-Port ABS Relay valve - 2S/1M Single Axle
C-Channel Dimension Mounting:
Approximate Height 5 1/4” x Width 3”
C-Channel Dimension (Option):
Approximate Height 7 3/4” x Width 3”
Fittings:
Push-To-Connect (PTC) Valves and Components
Panel Fasteners:
Threaded Nuts 1/4-20 UNC and 5/16-18 UNC
Mounting Fasteners:
3/8”-16 UNC X 1 1/4” Long Hex Bolt
Nylon tubing (DOT):
1/4”, 3/8” and 1/2” Installed (5/8” tubing provided
by installer)
Included:
Rubber Service Brake Hose clamp Assembly
NOTE: See L31250W Manual for Brake Monitoring System (BMS-1) Information.
Technical Information
PAGE 3
Haldex Modular Dolly System (HMDS) with Brake
Monitoring System (BMS) for Single Axle Dollies
Installation/Service Guide (L31298W)
Haldex Modular Dolly System (HMDS)
Components - Front
ITCM Electronic
Control Unit (ECU)
ABS
Power
Emergency
Valve
Suspension
Dump Valve
2-Port ABS
Relay Valve
Service Pressure
Switch
Dolly Air
Module Panel
Booster
Valve
Manifold
One-Way
Check Valve
Quick Release
Valve
Supply Pressure
Switch