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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.
4. Overheat
·
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.
·
Adjust.
·
Replace.
·
Clean.
·
Clean.
·
Adjust or replace.
·
Add.
·
Repair or replace.
·
Use engine brake.