Hyundai 35DS-7 Operation Manual page 104

2 2 . TROUBLESHOOTING
Problem
Insufficient braking force
Brake acting unevenly.
(Machine is turned to one
side during braking.)
Brake trailing.
Brake chirps
Brake squeaks
Large pedal stroke
Pedal dragging.
c c ause
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.
Brake trailing.
Piston fails to return.
Disk worn.
Disk surface roughened.
Disk surface roughened.
Disk worn.
Excessively large friction between
disk plate.
Brake out of adjustment.
Hydraulic line sucking air.
Oil leaks from hydraulic line, or lack
of oil.
Disk worn.
Twisted push rod caused by improp-
erly fitted brake valve.
Brake valve seal faulty.
4-10
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.
See above. Brake trailing.
Replace.
Replace.
Repair by polishing or replace.
Repair by polishing or replace.
Replace.
Clean and apply brake grease.
Adjust.
Bleed air.
Check and repair or add oil.
Replace.
Adjust.
Replace.