Cardone 96-8739 New Power Steering Unit CARDONE Engineering new products to improve upon OE designs and eliminate premature OE failures 100% computerized hydraulic testing is performed for proper flow, leakage and performance to ensure perfect fit and function All units are built with premium grade seals and o-rings Units are supplied with 100% tested and calibrated pressure relief valves The pulley may have cracked upon removal. If the shaft was mushroomed before removing the pulley, it has now enlarged the bore in the pulley. The pulley must be replaced. There may be debris in the flow control valve bore not allowing the flow control valve to move as it should. (Valve and bore are located behind the high pressure fitting on the pump). The system must be checked for contamination and flushed. Use the correct fluid type that meets O.E. specifications for your vehicle Flush system with approved fluid to remove debris and contamination Install a filter to eliminate potential restrictions from debris Check for collapsed hoses that could potentially cause a restriction Always replace sealing O-Rings Never use Teflon tape as an attempt to seal fittings Leaks Lack of power assist while turning the wheel Whining, groaning or squealing noises from the pump Power assist only with increase in engine rpm