Hyundai HX130LCR Manual page 339

5) TRAVEL ACTION IS POWERLESS (travel only)
Is travel brake
YES
pressure within
standard level?
Is travel relief
valve pressure
within standard
level?
NO
Remove parking
brake spring in
travel motor,
draw out piston
ⓐ
completely, refit
cover and check
if travel power
changes.
6) MACHINE RUNS RECKLESSLY ON A SLOPE
Travel brake valve
(counterbalance
valve) is faulty.
YES
Is travel motor's
YES
drain rate within
standard level?
NO
NO
Increases
Remains
unchanged
6-16
ⓐ
Travel motor is
faulty.
Travel brake valve
is defective.
Travel relief valve
is faulty.
YES
Hydraulic circuit
that releases
Does parking
brake piston
travel parking
move lightly by
brake is clogged
hand?
with dirt.
Parking brake
NO
piston in travel
motor is stuck.
Travel reduction
unit is defective.
Cause Remedy
Disassemble
and repair.
Disassemble
and repair or
replace.
Disassemble
and repair or
replace.
Disassemble
and clean.
Disassemble
and repair.
Disassemble
and repair.
Cause Remedy
Disassemble
and repair or
replace.