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/PT 27-0007.pdf
DSA7085 PT 27 0007 Binding Steering On Turns Applies to all steering systems Binding tight feel when turning steering wheel Possible steering coupling universal joint failure Steering binding is often mistakingly diagnosed as a defective steering unit or power steering pump Further diagnosis may reveal that it is a frozen or sticking universal coupling on the steering shaft that connects to the unit input shaft Most couplers are sealed and cannot be lubricated Exposure to weather and road conditions causes them to dry out and rust shortening their life 1 Disconnect the coupling from the steering unit input shaft usually attached with a pinch bolt 2 After sliding the coupling off of the input shaft rotate the coupling U joint in both directions to feel for any binding or tight spots 3 If it is binding or tight replace the coupling with a quality replacement 4 If it is free and no binding is found re install coupling and continue diagnosis of other steering linkage and all mechanically connected components If all component test results are good continue with diagnosis of hydraulic system including pressure tests Refer to your vehicle s service manual for repair procedures specs and possible TSB s This Pro Tech bulletin is supplied as technical information only and is not an authorization for repair Application Cause Problem Note Solution Test Procedure Coupling Steering unit Lower column shaft
