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Hydraulic Brakes
Dexter offers several varieties of hydraulic trailer brakes. Your vehicle may be
equipped with drum brakes or disc brakes.
The hydraulic brakes on your trailer are much like those on your automobile
or light truck. The hydraulic uid from a master cylinder or actuation system is
used to actuate the wheel cylinder which, in turn, applies force against the brake
shoes and drum. The main difference between automotive hydraulic brakes and
hydraulic trailer brakes is the trailers’ actuation system. These systems respond
to the braking signal from the tow vehicle and supply the required brake uid
volume and pressure to the trailer brakes.
In the following pages you will nd a more detailed description of the hydraulic
brakes and actuation system used on your trailer.
CAUTION
The maximum operating pressure for Dexter brakes:
• 7" diameter drum brakes
maximum operating pressure is 750 psi
• 10" diameter and larger drum brakes
maximum operating pressure is 1,000 psi
• Hydraulic disc brakes (all sizes)
maximum operating pressure is 1,600 psi
Braking Systems - Hydraulic
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