45
Heavy Haul Trailers
3.7
Trailer Suspension and Brake Controls
The Trailer Air Suspension Controls are situated in a box mounted on the Rear Axle Section, as shown
in Fig. 3-27.
Housed in the box is the Ride Control Valve, which has settings for 3 different ride heights; the
Suspension Air Regulating Valve, for over riding the air bag pressure; a Air Bag Pressure Gauge; the Air
Bag Pressure Relief Valve, used when dumping the air from the air bags; the Emergency Brake Release
Valve; the switch for the Rear Strobe Lights and the switch for the optional Strobe Light Battery Back-
up.
A chart on the inside of the door outlines the air bag pressure required for different weight loads.
FIG. 3-28.
Control Box Components
SUSPENSION
LOAD CHART
Suspension Air Gauge
Strobe Light Switch
Strobe Light Battery
Back-up Switch
Emergency Brake
Release Valve
Air Bag Pressure
Relief Valve
Height Control Valve
Suspension Air Regulator
FIG. 3-27.
Trailer Suspension and Brake Controls Location
Control Box
Summary of Contents for H550 Series
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Page 52: ...43 Heavy Haul Trailers 3 5 4 Extension Load Shim Instructions ...
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Page 84: ...69 Heavy Haul Trailers Date Maintenance Performed Maintenance Records ...
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