Hyundai HX130LCR Manual page 340

7) MACHINE MAKES A CURVED TRAVEL OR DOES NOT TRAVEL AT ALL WHEN TRAVEL
AND ATTACHMENT OPERATIONS ARE EXECUTED AT THE SAME TIME
Is straight spool
YES
normal?
Is pilot pressure
for travel straight
spool within
standard level?
Is signal orifice
clogged?
NO
YES
NO
YES
YES
Is gear pump
delivering oil?
NO
NO
6-17
Straight spool is
faulty.
Is pilot relief
NO
Pilot relief valve is
valve normal?
defective.
Gear pump is
broken.
Cause Remedy
Normal.
Repair or
replace.
Remove dirt on
signal orifice.
Disassemble
and repair or
replace.
Disassemble
and repair.