Hyundai HL955 Manual page 422

Problem
"Motoring" effect. "Motoring" effect.
The steering wheel can The steering wheel can
turn on its own. turn on its own.
Cause
Leaf springs are stuck or broken and
have therefore reduced spring force.
Inner and outer spools pinch, possibly
due to dirt.
Return pressure in connection with the
reaction between differential cylinder
and steering unit too high.
Oil is needed in the tank.
Steering cylinder worn.
Gear wheel set worn.
Spacer across cardan shaft forgotten.
5-18
Remedy
Replace leaf springs.
Clean steering unit or contact the
nearest service shop.
Reduce return pressure.
Fill with clean oil and bleed the system.
Replace or repair cylinder.
Replace gear wheel set.
Install spacer.