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/PT 27-0008.pdf
JDA8340 PT 27 0008 Test Steering Gears Under Pressure All Domestic Power Steering Gears After installation of a replacement unit input shaft free play seems excessive Unit must be tested under pressure from power steering pump Most steering gears will have more free play around center until power steering pressure is applied to the gear Follow the test steps below when testing for free play 1 Gear must be on mechanical center Determine center by dividing total turns lock to lock in half If gear is not centered there will be excessive play 2 Start engine Be sure pump is producing proper pressure and flow through the gear If gear is not under pressure the input shaft which consists of a torsion bar within the spool valve will produce play When under pressure the fluid compensates With no pressure applied input play can exceed 5 degrees 3 Test unit If free play persists be sure coupler is good it is firmly tightened to the shaft suspension components and linkages are serviceable and tires are correct for the vehicle and properly inflated This Pro Tech bulletin is supplied as technical information only and is not an authorization for repair Be sure to refer to the vehicle service manual and any applicable service bulletins for additional information Application Cause Problem Note Solution
