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/How to Service Power Steering.pdf
Restric tion In System C Guidelines for Inspection CBrittleness or hardness an early sign of internal wear The hose has lost its ability to absorb pressure surges CSoft spongy hose A more serious sign of wear indicating advanced internal deterioration and probably leakage CLeakage of power steering fluid easily detected by visual inspection of hose at fittings CExternal wear and abrasion caused by contact with manifold or other engine parts calls for replacement and realignment of hose CThick sludgy fluid in pump reservoir indicates internal hose wear and need for a complete flush of system Identifying Power Steering Problems Physical Problems Probable Causes Low Tire Pressure C C High Internal Leak Pump or Gear C C Pump Belt Loose C C C Flow Control Valve Sticking C C Low Oil In Reservoir C C C Air In System C Front End Mis aligned C C C C Steering Linkage Coupler Damaged C C Symptom Hard Steering Increased Effort Wheel Jerks at Low Speeds Loose Steering or Excess Wheel Return Vehicle Wanders from Side to Side Poor Wheel Return Split or dent road debris or rust from high salt areas Stripped thread improper installation or worn o rings Couplings creeping off oil contamination Checking or flaking of external cover Wear from rubbing against metal Probable Solutions AA4 4 Fill Tire To Recom mended Pressure Replace Gear Or Pump Tighten Pump Belt Remove Valve Buff Clean And Replace Fill Reservoir With Oil Flush And Bleed System RealignReplace Ball Studs Tie Rods Or Linkage Flush System Check Hoses For Blockage SERVICING YOUR POWER STEERING HOSE Maintenance and Causes of Wear CInspection of power steering hose eliminates expensive repairing or replacing of the pump or other components CHoses should be replaced after 20 000 24 000 miles as preventive maintenance CHigh temperature pulsations cause power steering hoses to deteriorate from the inside The constant flexing and pressure surges result in the breaking off of small particles of hose which are carried through the system and can lead to system malfunction Audible Problems Probable Causes Probable Solutions Flow Control Valve Sticking C C Low Oil In Reservoir C C C Air In System C C C C Damper O Ring On Spool Valve Cut C Restric tion In System C Scored Pump Shaft Bushing Bearing C C Scored Pump Plate C Wear On Cam Ring C Symptom Gear Squawk Growling Hissing Noise Groan Swish in Pump Whine in Pump Weeping deterioration at crimp Exterior deterioration excessive heat or ozone AA5 5 Remove Valve Buff Clean And Replace Fill Reservoir With Oil Flush And Bleed System Replace O Ring Flush System Check Hoses For Blockage Replace Bushing Replace Pump Replace Pump
