ll 48 STEEIIIII6 r Service Dlagnesis Steerlng Gear and Pump Continued Condition Possible Cause Correction HARD STEERING OR 1 Loose pump belt 1 Adjust belt tension to specifi LACK OF ASSIST cation 2 Low oil level in reservoir 2 Fill to proper level If excessively low check all lines and joints for NOTE Low oil level will also result in evidence of external leakage excessive pump noise Tighten loose connectors 3 Tires not properly inflated 3 Inflate to recommended pressure 3 5 hI f3 h l sO 1l Further possible causes could be rigleal mus Ofthard 4 Sticky flow control valve In order to diagnose conditions such as S g if SI listed in 4 5 6 v a test or me pressure QS 5 Insufficient pump pressure entire power steering system using output gauge tool J 21567 is required 6 Excessive internal pump leakage 7 Excessive intemal gear leakage FOAMING AERATED 1 Air in the fluid and loss of fluid 1 Check for leak and correct Bleed POWER STEERING due to internal pump leakage system Extremely cold tempera FLUID LOW FLUID causing overflow tures will cause system aeriation LEVEL AND should the oil level be low If oil POSSIBLE LOW level is correct and pump still PRESSURE foams remove pump from ve hicle and separate reservoir from housing Check welsh plug and housing for cracks If plug is loose or housing is cracked re place housing LOW PRESSURE DUE 1 Flow control valve stuck or in 1 Remove burrs or dirt or replace TO STEERING PUMP operative Flush system 2 Pressure plate not flat against 2 Correct cam ring 3 Extreme wear of cam ring 3 Replace parts Flush system 4 Scored pressure plate thrust 4 Replace parts Flush system plate or rotor 5 Vanes not installed properly 5 Install properly 6 Vanes sticking in rotor slots 6 Freeup by removing burrs varnish or dirt 7 Cracked or broken thrust or 7 Replace part pressure plate LOW PRESSURE DUE 1 Pressure loss in cylinder due to 1 Remove gear from car for disas TO STEERING GEAR worn piston ring or badly worn sembly and inspection of ring and housing bore housing bore 2 Leakage at valve rings valve 2 Remove gear from car for disas body to worm seal sembly and replace seals