Hyundai HX145LCR Manual page 368

5. TRAVEL SYSTEM 5. TRAVEL SYSTEM
1) 1) TRAVEL DOES NOT FUNCTION AT ALL ON ONE SIDE TRAVEL DOES NOT FUNCTION AT ALL ON ONE SIDE
Has travel spool
YES
changed over
positively?
Is bucket or arm
operation
possible?
Does the
symptom change
when LH/RH
NO
travel relief valves
are exchanged?
YES
Is travel brake
YES
valve pressure
within standard
level?
NO
YES
Does travel spool
move?
NO
NO
YES
Do not metallic
particles come
ⓐ
out of drain port
in travel
reduction unit?
NO
Does the symptom
change when A1
NO YES
and A2 pump
discharge hoses
are exchanged?
YES
6-13
YES
ⓐ
Does
counterbalance
spool move lightly
by hand?
Counter spool is
NO
stuck.
Does the symptom
change when
YES
relief valves in
Relief valve built
travel motor are
in travel motor is
exchanged?
faulty.
Control system is
defective.
Travel spool is
stuck.
Travel reduction
unit is faulty.
Travel motor is
out of order.
Hydraulic pump is
broken.
Travel relief
valves are faulty.
Cause Remedy
Disassemble
and repair or
replace.
Disassemble
and repair.
Disassemble
inspect and
repair.
Disassemble
and repair.
Disassemble
and repair.
Disassemble
and repair.
Disassemble
and repair.
Disassemble
and repair or
replace.