Hyundai 18L 7M User Manual

4-7
Problem
Insufficient braking force
Brake acting unevenly.
(Machine is turned to one
side during braking.)
 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.
 Adjust tire pressure.
 Adjust.
 Repair by polishing or replace.
 Adjust or replace.
 Clean.
 Repair and add oil.
 Bleed air.
 Replace.
 Repair or replace.
 Clean.
c
cause Remedy
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.
22. TROUBLESHOOTING
Brake chirps
 Brake trailing.
 Piston fails to return.
 Disk worn.
 Disk surface roughened.
 See above. Brake trailing.
 Replace.
 Replace.
 Repair by polishing or replace.
Brake squeaks
 Disk surface roughened.
 Disk worn.
 Excessively large friction between
disk plate.
 Repair by polishing or replace.
 Replace.
 Clean and apply brake grease.
Large pedal stroke
Pedal dragging.
 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.
 Adjust.
 Bleed air.
 Check and repair or add oil.
 Replace.
 Adjust.
 Replace.

Hyundai 18L 7M Specifications

General

Brand	Hyundai
Model	18L 7M
Category	Forklifts
Language	English