Brake System - Hyundai 250D-9 Manual

5. BRAKE SYSTEM

5. BRAKE SYSTEM
Trouble symptom Trouble symptom
1. Insufficient braking force
2. Brake acting unevenly.
(Truck is turned to one
side during braking.)
3. Brake trailing.
4. Overheat
Probable cause Probable cause
·Hydraulic system leaks oil.
·Hydraulic system leaks air.
·Disk worn.
·Brake valve malfunctioning
·Hydraulic system clogged
·Tires unequally inflated.
·Brake out of adjustment.
·Disk surface roughened.
·Wheel bearing out of adjustment.
·Hydraulic system clogged.
·Pedal has no play.
·Piston cup faulty.
·Brake valve return port clogged.
·Hydraulic system clogged.
·Wheel bearing out of adjustment.
·Cooling oil insufficient.
·Cooling system malfunctioning.
·Excessive braking.
9-8
Remedy Remedy
·Repair and add oil.
·Bleed air.
·Replace
·Repair or replace.
·Clean.
·Adjust tire pressure.
·Adjust.
·Repair by polishing or replace.
·Adjust or replace.
·Clean.
·Adjust.
·Replace.
·Clean.
·Clean.
·Adjust or replace.
·Add.
·Repair or replace.
·Use engine brake.