Hyundai 80D-9 User Manual

9-8
5. BRAKE SYSTEM
5. BRAKE SYSTEM
Trouble symptom
1. Insufficient braking force
2. Brake acting unevenly.
(Truck is turned to one
side during braking.)
· Hydraulic system leaks oil.
· Hydraulic system sucks 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.
· Adjust tire pressure.
· Adjust.
· Repair by polishing or replace.
· Adjust or replace.
· Clean.
· Repair and add oil.
· Bleed air.
· Replace
· Repair or replace.
· Clean.
Probable cause Remedy
3. Brake trailing. · Pedal has no play.
· Piston cup faulty.
· Brake valve return port clogged.
· Hydraulic system clogged.
· Wheel bearing out of adjustment.
· Adjust.
· Replace.
· Clean.
· Clean.
· Adjust or replace.

Hyundai 80D-9 Specifications

General

Model	80D-9
Load Capacity	8000 kg
Engine Type	Diesel
Engine Model	Cummins QSF3.8
Operating Weight	11400 kg
Tire Type	Pneumatic
Fuel Type	Diesel
Transmission Type	Automatic