Troubleshooting Trouble SymptomProbable causeRemedyVehicle pulls to one sideScoring of driveshaft ball jointReplaceWear, rattle or scoring of wheel bearingReplaceDefective front suspension and steeringAdjustment or ReplaceVibrationWear, damage or bending of driveshaftReplaceDriveshaft rattle and hub serrationReplaceWear, rattle or scratching of wheel bearingReplaceShimmyDefective wheel balanceAdjustment or ReplaceDefective front suspension and steeringAdjustment or ReplaceExcessive noiseWear, damage or bending of driveshaftReplaceRattle of driveshaft and worn hub splinesReplaceWear, rattle or scoring of wheel bearingReplaceLoose hub nutAdjustment or ReplaceDefective front suspension and steeringAdjustment or Replace
Components 1. Front knuckle assembly2. Dust cover3. Front hub bearing4. Brake disc
Oil Specification 1. The HFC-134a system requires synthetic (PAG) compressor oil whereas the R-12 system requires mineral compressor oil. The two oils must never be mixed. 2. Compressor (PAG) oil varies according to compressor model. Be sure to use oil specified for the compressor model.
Replacement 1. Discharge refrigerant from refrigeration system. 2. Replace any faulty tubes or hoses. Cap the open fittings immediately to keep moisture or dirt out of the system. 3. Tighten the bolt or nut joint to the specified torque.