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Home >> BMW >> 2000 >> 740iL >> Repair and Diagnosis (Single Page) >> Steering >> Power Steering >> Steering And Wheel Alignment - Repair >> Troubleshooting >> 32 00... Troubleshooting on the front axle / rear axle (alignment check) >> Troubleshooting on the front axle

Troubleshooting on the front axle

FRONT AXLE TROUBLESHOOTING

Fault Cause Remedy
1. Toe deviation
  1. Vehicle not in normal position
  2. Tie rod(s) bent
  3. Ball joints on track rod(s) misaligned
  4. Rubber mount in control arm faulty
  1. Height setting, refer to RIDING HEIGHT
  2. Replacing track rod(s), refer to 32 21 231 REPLACING LEFT OR RIGHT TIE ROD .
  3. Replacing track rod(s), refer to 32 21 231 REPLACING LEFT OR RIGHT TIE ROD .
  4. Replacing control arm, refer to UPPER CONTROL ARM .
2. Camber deviation:
Camber is defined by design and cannot be adjusted.
  1. Rubber mount in control arm faulty
  2. Control arm deformed
  3. Spring strut deformed
  4. Guide joint worn
  5. Spring deflection too great
  6. Front-axle carrier deformed
  7. Spring strut shock absorber mount mis-shapen
  8. Distortion in floor assembly (engine carrier)
  1. Replacing control arm, refer to UPPER CONTROL ARM .
  2. Replacing control arm, refer to UPPER CONTROL ARM .
  3. Replacing spring strut, refer to COIL SPRING & SHOCK ABSORBER .
  4. Replacing control arm, refer to UPPER CONTROL ARM .
  5. Replacing coil spring, refer to COIL SPRING & SHOCK ABSORBER and RIDING HEIGHT .
  6. Replacing front axle carrier, refer to FRONT AXLE (WITH SPRING STRUTS) and FRONT AXLE SUPPORT .
  7. Repair front end
  8. Repair body


FRONT AXLE TROUBLESHOOTING

Fault Cause Remedy
3. Caster deviation: caster is a design feature and cannot be adjusted.
  1. Rubber mount for traction strut unserviceable
  2. Traction strut mis-shapen
  3. Control arm deformed
  4. Spring strut deformed
  5. Wheel house deformed (spring-strut mount)
  6. Distortion in floor assembly (engine carrier)
  1. Replacing rubber mount, refer to RUBBER MOUNTS ON TRACTION STRUTS .
  2. Replacing traction strut, refer to TRACTION STRUT .
  3. Replacing control arm, refer to UPPER CONTROL ARM .
  4. Replacing spring strut, refer to COIL SPRING & SHOCK ABSORBER .
  5. Repair front end
  6. Repair body
4. Toe-difference angle deviation Requirements: camber and caster are correct
  1. Tie rods not adjusted uniformly
  1. Adjust toe on left and right sides to same value
5. Wheel-offset deviation Requirements: front wheels have equal single toe to geometrical axis
  1. Front-axle carrier deformed
  2. Engine carrier deformed
  3. Control arm deformed
  4. Traction strut mis-shapen
  1. Replacing front axle carrier, refer to FRONT AXLE (WITH SPRING STRUTS) and FRONT AXLE SUPPORT .
  2. Repair body
  3. Replacing control arm, refer to UPPER CONTROL ARM .
  4. Replacing traction strut, refer to TRACTION STRUT .
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