Hyundai HX130LCR Manual page 328

2. DRIVE SYSTEM
UNUSUAL NOISE COMES OUT OF PUMP CONNECTION
1)
YES
Remove dust
plug under engine
flywheel and
check if rubber
pieces or particles
are not present.
Coupling hub
spline is worn or
NO
hub fastening
setscrew is slack.
YES
If hydraulic pump or engine is
suspected as a culprit refer to this
NO
manual "Structure and function".
6-5
Cause Remedy
Coupling element Disassemble
is broken. and repair.
Replace hub or
retighten
setscrew.