31 90... Front axle troubleshooting
Follow troubleshooting for STEERING /SHOCK ABSORBERS .
TROUBLESHOOTING CHART
| Fault | Cause | Remedy |
|---|---|---|
| Grinding noise (louder when negotiating bends) | Wheel bearings faulty | Replace WHEEL BEARINGS |
| Vibration | Wheel imbalance | Balance WHEELS |
| Radial/lateral rim runout | Check rims, replace if necessary. See CHECKING RIM FOR FACE AND RADIAL RUNOUT , CHANGING A TIRE (ON FRONT, REAR OR SPARE WHEEL) , or REPLACING A RUNFLAT TIRE OR A UHP TIRE . | |
| Radial tire runout | Match or replace tires. See CHECKING FRONT AND REAR WHEEL FOR FACE AND RADIAL RUNOUT , CHECKING ONE ROAD WHEEL ON BALANCING MACHINE FOR FACE AND RADIAL RUNOUT (WHEEL REMOVED) , CHANGING A TIRE (ON FRONT, REAR OR SPARE WHEEL) , or REPLACING A RUNFLAT TIRE OR A UHP TIRE . | |
| Steering-wheel shake | Wheel imbalance | Balance WHEELS |
| Radial/lateral rim runout | Check rims, replace if necessary. See CHECKING RIM FOR FACE AND RADIAL RUNOUT , CHANGING A TIRE (ON FRONT, REAR OR SPARE WHEEL) , or REPLACING A RUNFLAT TIRE OR A UHP TIRE . | |
| Rubber mount of control arm faulty | Replace CONTROL ARMS | |
| Ball joint in control arm worn | Replace CONTROL ARMS | |
| Rubber mount of tension strut faulty | Replace RUBBER MOUNTS ON BOTH TENSION STRUTS | |
| Ball joint on tension strut worn | Replace both TENSION STRUTS | |
| Refer to TROUBLESHOOTING for steering | ||
| Excessive steering wheel play/steering wheel inclination | Refer to BMW diagnosis system "Troubleshooting tree wheel/chassis alignment check" | |
| Rattling noise | Bolts for reinforcement plate loose | Tighten down bolts (refer to REMOVING AND INSTALLING/REPLACING REINFORCEMENT PLATE ) |
| Bolts for front axle carrier to engine carrier loose | Replace bolts (refer to LOWERING FRONT AXLE CARRIER ) | |
| Bolt for spring strut to swivel bearing loose | Replace bolt & nut (refer to REMOVING AND INSTALLING FRONT SPRING STRUT ) | |
| Ball joint in control arm worn | Replace CONTROL ARMS | |
| Ball joint on tension strut worn | Replace both TENSION STRUTS | |
| Rubber mounts for stabilizer bar bracket faulty | Replace both RUBBER MOUNTS OF STABILIZER BAR BRACKET | |
| Ball joints on stabilizer link(s) worn | Replace both STABILIZER LINKS | |
| Excessive tire wear | Front or rear axle alignment incorrectly adjusted | Check suspension components for damage; if necessary, carry out chassis/wheel alignment check. See KDS CHASSIS/WHEEL ALIGNMENT CHECK WITH LOAD UP TO DESIGN POSITION or KDS CHASSIS/WHEEL ALIGNMENT CHECK WITH RIDE-HEIGHT MEASUREMENT WITHOUT LOAD . |