Running gear, axles, steering

Chapter overview

• Technical data
  1
• 1 Safety information
  1
• 1.1 Safety measures when working on vehicles with start/stop system
  1
• 1.2 Safety precautions when working on subframe
  1
• 2 General information
  2
• 2.1 General notes on tyre pressure indicator
  2
• 3 Repair notes
  3
• 3.1 Rules for cleanliness
  3
• 3.2 Leaks at shock absorbers
  3
• 3.3 Noises from shock absorbers
  4
• 3.4 Checking shock absorbers when removed
  4
• 3.5 Steering rack
  5
• 3.6 Gaskets and seals
  5
• 3.7 Nuts and bolts
  6
• 3.8 Routing and attachment of lines
  6
• 3.9 Raising suspension to unladen position (vehicles with coil springs)
  6
• 4 Evaluating accident vehicles
  12
• 4.1 Check list for evaluating running gear on accident vehicles
  12
• 5 Disposal
  14
• 5.1 Releasing gas and draining front gas-filled shock absorbers
  14
• 5.2 Releasing gas and draining rear gas-filled shock absorbers
  15
• 6 Hazard classification of high-voltage system
  16
• Front suspension
  17
• 1 Front axle
  17
• 1.1 Overview of fitting locations – front axle
  17
• 2 Subframe
  18
• 2.1 Assembly overview – subframe
  18
• 2.2 Removing and installing subframe with steering rack
  19
• 2.3 Repairing subframe
  23
• 2.4 Removing and installing anti-roll bar
  27
• 2.5 Renewing anti-roll bar bushes
  28
• 2.6 Removing and installing coupling rod
  28
• 2.7 Fixing subframe in position
  29
• 3 Suspension strut
  35
• 3.1 Assembly overview – suspension strut
  35
• 3.2 Removing and installing suspension strut
  37
• 3.3 Repairing suspension strut
  50
• 4 Lower suspension link, swivel joint
  53
• 4.1 Assembly overview - lower suspension link, swivel joint
  53
• 4.2 Removing and installing lower suspension link
  55
• 4.3 Checking swivel joint
  57
• 4.4 Removing and installing swivel joint
  58
• 4.5 Renewing bonded rubber bush for lower suspension link
  60
• 5 Wheel bearing
  67
• 5.1 Assembly overview – wheel bearing assembly
  67
• 5.2 Removing and installing wheel bearing housing
  68
• 5.3 Removing and installing wheel bearing unit
  75
• 6 Drive shaft
  85
• 6.1 Assembly overview – drive shaft
  85
• 6.2 Removing and installing drive shaft
  89
• 6.3 Loosening and tightening threaded connections of drive shaft
  99
• 6.4 Dismantling and assembling drive shaft
  101
• 6.5 Checking outer constant velocity joint
  117
• 6.6 Checking inner constant velocity joint
  119
• 6.7 Repairing intermediate shaft
  121
• Rear suspension
  125
• 1 Rear axle
  125
• 1.1 Overview – rear axle
  125
• 2 Anti-roll bar
  126
• 2.1 Assembly overview – anti-roll bar
  126
• 2.2 Removing and installing anti-roll bar
  126
• 2.3 Renewing anti-roll bar bushes
  128
• 3 Suspension link, track rod
  132
• 3.1 Assembly overview - transverse link
  132
• 3.2 Removing and installing lower transverse link
  132
• 3.3 Renewing bonded rubber bush for suspension link
  135
• 4 Suspension strut, shock absorber, spring
  142
• 4.1 Assembly overview - suspension strut, shock absorber, spring
  142
• 4.2 Removing and installing shock absorber
  143
• 4.3 Removing and installing spring
  145
• 5 Wheel bearing assembly, trailing arm
  149
• 5.1 Assembly overview – wheel bearing assembly
  149
• 5.2 Removing and installing wheel bearing unit
  149
• 6 Drive shaft
  155
• 6.1 Assembly overview – drive shaft
  155
• 6.2 Removing and installing drive shaft
  157
• 6.3 Dismantling and assembling drive shaft
  162
• 6.4 Loosening and tightening threaded connections of drive shaft
  170
• 6.5 Checking inner constant velocity joint
  172
• Self-levelling suspension
  175
• 1 Electronically controlled damping system
  175
• 1.1 Assembly overview - electronically controlled damping system
  175
• 1.2 Removing and installing electronically controlled damping control unit J250
  176
• 1.3 Removing and installing front body acceleration senders G341/G342
  177
• 1.4 Removing and installing rear body acceleration sender G343
  178
• 2 Vehicle level sender
  180
• 2.1 Assembly overview – front vehicle level senders
  180
• 2.2 Assembly overview – rear vehicle level senders
  182
• 2.3 Removing and installing front vehicle level senders G78/G289
  183
• 2.4 Removing and installing rear vehicle level senders G76/G77
  185
• Wheels, tyres, vehicle geometry
  187
• 1 Wheels, tyres
  187
• 1.1 Removing tyre from wheel
  187
• 1.2 Fitting tyre
  187
• 1.3 Wheel change
  188
• 1.4 Specified torques for wheel bolts
  192
• 1.5 Pressing tyre off wheel rim
  193
• 1.6 Tyre sealant disposal
  193
• 1.7 Models with breakdown set
  194
• 2 Tyre Pressure Monitoring System
  197
• 2.1 System description – Tyre Pressure Monitoring System
  197
• 2.2 Overview of fitting locations - Tyre Pressure Monitoring System
  197
• 2.3 Assembly overview - tyre pressure sensor
  198
• 2.4 Removing and installing Tyre Pressure Monitoring System control unit J502
  200
• 2.5 Removing and installing tyre pressure sensors G222/G223/G224/G225
  200
• 3 Wheel alignment
  202
• 3.1 Notes for wheel alignment
  202
• 3.2 Conditions for testing
  203
• 3.3 Test preparations
  203
• 3.4 Specifications for wheel alignment
  205
• 3.5 Wheel alignment procedure
  207
• 3.6 Necessity of wheel alignment
  208
• 3.7 Explanatory notes on production control numbers (PR no.)
  209
• 3.8 Adjusting camber at front wheels
  210
• 3.9 Adjusting front axle toe
  210
• 3.10 Adjusting toe at rear axle
  211
• 3.11 Wheel runout compensation
  212
• 3.12 Vehicle data sticker
  213
• 3.13 Checking maximum steering wheel angle
  213
• 3.14 Checking steering centre position on steering rack
  214
• 4 Adaptive cruise control
  215
• Steering
  216
• 1 Steering wheel
  216
• 1.1 Assembly overview – steering wheel
  216
• 1.2 Removing and installing steering wheel
  216
• 2 Steering column
  219
• 2.1 Assembly overview – steering column
  219
• 2.2 Checking steering column for damage
  221
• 2.3 Handling and transporting steering column
  221
• 2.4 Removing and installing steering column
  222
• 2.5 Removing and installing intermediate steering shaft
  224
• 3 Steering rack
  229
• 3.1 Assembly overview – steering rack
  229
• 3.2 Checking steering rack for damage
  230
• 3.3 Handling and transporting steering rack
  230
• 3.4 Removing and installing steering rack
  230
• 3.5 Removing and installing bellows
  231
• 3.6 Removing and installing track rod
  232
• 3.7 Removing and installing track rod ball joint
  235
• 3.8 Repairing steering rack
  237
• 4 Sensors
  238
• 4.1 Removing and installing steering angle sender G85
  238