Hyundai 35DS-7 Operation Manual page 167

4) LIFT CYLINDER
Problem
Oil leaks out from gland
through rod.
Oil leaks out from cylinder
gland thread.
Rod spontaneously retract.
Wear(clearance between
cylinder tube and wear ring)
Abnormal noise is produced
during tilting operation.
C C ause
Foreign matters on packing.
Unallowable score on rod.
Unusual distortion of dust seal.
Chrome plating is striped.
O-ring damaged.
Scores on inner surface of tube.
Unallowable score on the inner
suface of tube.
Foreign matters in piston seal.
Excessive clearance between
cylinder tube and wear ring.
Insufficient lubrication of anchor pin or
worn bushing and pin.
Bent tilt cylinder rod.
6-23
Remedy
Replace packing.
Smooth rod surface with an oil stone.
Replace dust seal.
Replace rod.
Replace O-ring.
Smooth rod surface with an oil stone.
Replace cylinder tube.
Replace piston seal.
Replace wear ring.
Lubricate or replace.
Replace.