-45-
Introduction to Troubleshooting
Proper brake function is critical to the safe operation of any vehicle. A properly
installed vacuum/hydraulic, electric/hydraulic, or air/hydraulic system should
not require any special attention with the exception of routine maintenance as
dened by the manufacturer. If problems occur, the entire tow vehicle/trailer
braking system should be analyzed by a qualied mechanic. Typical problems in
a hydraulic braking system are:
• Air or vacuum leaks
• Hydraulic system leaks
• Air in brake lines
• Water or other impurity in brake uid
• Rusted or corroded master or wheel cylinders
• Actuation system malfunction
Please consult the following troubleshooting charts to determine the causes and
solutions for common problems found in trailer braking systems.
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
To Next Page
Loading...