5-14 Problem Cause Remedy "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 the whole time without the steered wheels moving Oil is needed in the tank. Steering cylinder worn. Gear wheel set worn. Spacer across cardan shaft forgotten. Fill with clean oil and bleed the system. Replace or repair cylinder. Replace gear wheel set. Install spacer.
Steering wheel can be turned slowly in one or both directions without t h e s t e e r e d w h e e l s turning One or both anticavitation valves are leaky or are missing in overload relief valves. One or both overload relief valves are leaky. Clean or replace defect or missing valves. Clean or replace. 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. Contact authorized man or shop. H e av y k i ck - b a ck i n steering wheel in both directions Wrong setting of cardan shaft and gear-wheel set. Correct setting as shown in group 4. Turning the steering wheel activates the steered wheels opposite Hydraulic hoses for the steering cylinders have been switched around. Connect lines to correct ports. Hard point when starting to turn the steering wheel Spring force in priority valve too weak. Air in LS line. Clogged orifi ces in priority valve. Oil is too thick (cold).
Replace spring by a stronger. Bleed LS line. Clean orifi ces in spool and in connecting plugs for LS. Let machine run until oil is warm. Too little steering force Pump pressure too low. Correct pump pressure.