5-19 Problem Cause Remedy Backlash Cardan shaft fork worn or broken. Leaf springs without spring force or broken. Worn splines on the steering column. Replace cardan shaft. Replace leaf springs. Replace steering column. "Shimmy" effect. The steered wheels vibrate. (Rough tread on tires gives vibrations) Air in the steering cylinder. Mechanical connections or wheel bearings worn. High priority valve setting pressure. Bleed cylinder. Find and remove the reason for air collection. Replace worn parts. Set pressure as regular value. Steering wheel can be turned slowly in one or both directions without the steered wheels turn- ing.
One or both shock valves are leaky or are missing in steering valve. Clean or replace defective of missing valves. Steering is too slow and heavy when trying to turn quickly. Insufficient oil supply to steering unit, pump defective or number of revolutions too low. Relief valve setting too low. Relief valve sticking owing to dirt. Spool in priority valve sticking owing to dirt. Too weak spring in priority valve. Replace pump or increase number of revolutions. Adjust valve to correct setting. Clean the valve. Clean the valve, check that spool moves easily without spring. Replace spring by a stronger. "Kick back" in steering wheel from system. Kicks from wheels. Fault in the system.
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