Running gear, axles, steering

Chapter overview

• Technical data
  1
• 1 Safety information
  1
• 1.1 Safety measures when working on vehicles with a start/stop system
  1
• 1.2 Safety precautions when working on subframe
  1
• 2 Repair notes
  2
• 2.1 Leaks at shock absorbers
  2
• 2.2 Checking shock absorbers when removed
  3
• 2.3 Rules for cleanliness
  3
• 2.4 General information
  4
• 2.5 Contact corrosion
  5
• 2.6 Steering rack
  5
• 2.7 Gaskets and seals
  5
• 2.8 Nuts and bolts
  6
• 2.9 Electrical components
  6
• 2.10 Repairing damaged threads in longitudinal member (subframe to body)
  6
• 2.11 Raising suspension to unladen position (vehicles with coil springs)
  6
• 2.12 Lifting suspension to normal level (vehicles with air suspension)
  13
• 3 Evaluating accident vehicles
  21
• 3.1 Check list for evaluating running gear on accident vehicles
  21
• 4 Waste disposal
  23
• 4.1 Releasing gas and draining front gas-filled shock absorbers
  23
• 4.2 Releasing gas and draining rear gas-filled shock absorbers
  23
• 4.3 Draining front suspension strut (air suspension)
  24
• 4.4 Draining accumulator
  24
• Front suspension
  26
• 1 Front axle
  26
• 1.1 Overview of fitting locations - front axle
  26
• 2 Subframe
  28
• 2.1 Assembly overview - subframe
  28
• 2.2 Removing and installing subframe with steering rack
  31
• 2.3 Removing and installing subframe cross brace
  39
• 2.4 Removing and installing subframe shield
  41
• 2.5 Fixing position of subframe
  42
• 2.6 Lowering subframe
  46
• 3 Suspension strut, upper suspension link
  50
• 3.1 Assembly overview - suspension strut, upper suspension link
  50
• 3.2 Removing and installing suspension strut
  55
• 3.3 Repairing suspension strut
  59
• 3.4 Removing and installing upper links
  63
• 3.5 Renewing bushes for upper suspension link
  66
• 3.6 Renewing bellows
  67
• 3.7 Charging suspension strut
  70
• 3.8 Removing and installing shock absorber fork
  72
• 3.9 Removing and installing body brace
  75
• 4 Lower suspension link, swivel joint
  79
• 4.1 Assembly overview - lower suspension link, swivel joint
  79
• 4.2 Removing and installing track control link
  80
• 4.3 Removing and installing guide link
  83
• 4.4 Renewing bush for track control link
  86
• 4.5 Removing and installing swivel joint
  90
• 4.6 Removing and installing bonded rubber bush for guide link
  92
• 5 Wheel bearing
  95
• 5.1 Assembly overview - wheel bearing
  95
• 5.2 Removing and installing wheel bearing housing
  95
• 5.3 Removing and installing wheel bearing unit
  98
• 5.4 Repairing wheel bearing unit
  100
• 6 Drive shaft
  105
• 6.1 Assembly overview - drive shaft
  105
• 6.2 Removing and installing drive shaft
  106
• 6.3 Loosening and tightening threaded connections of drive shaft
  107
• 6.4 Removing and installing drive shaft heat shield
  108
• 6.5 Dismantling and assembling drive shaft
  109
• 6.6 Repairing constant velocity joint
  121
• 6.7 Checking outer constant velocity joint
  123
• 7 Anti-roll bar
  126
• 7.1 Assembly overview - anti-roll bar
  126
• 7.2 Removing and installing anti-roll bar
  129
• 7.3 Removing and installing coupling rod
  135
• 7.4 Removing and installing anti-roll bar control unit J736
  137
• Rear suspension
  138
• 1 Rear axle
  138
• 1.1 Overview - rear axle
  138
• 1.2 Removing and installing rear axle
  140
• 2 Subframe
  144
• 2.1 Assembly overview - subframe
  144
• 2.2 Fixing position of subframe
  145
• 2.3 Repairing subframe
  149
• 3 Anti-roll bar
  162
• 3.1 Assembly overview - anti-roll bar
  162
• 3.2 Removing and installing anti-roll bar
  164
• 3.3 Removing and installing coupling rod
  167
• 3.4 Removing and installing anti-roll bar control unit 2 J1071
  168
• 4 Suspension link, track rod
  170
• 4.1 Assembly overview - transverse link
  170
• 4.2 Removing and installing upper transverse link
  172
• 4.3 Removing and installing lower transverse link
  176
• 4.4 Removing and installing track rod
  182
• 4.5 Removing and installing stone deflector
  184
• 5 Suspension strut, shock absorber, spring
  186
• 5.1 Assembly overview - suspension strut, shock absorber, spring
  186
• 5.2 Removing and installing shock absorbers
  189
• 5.3 Repairing shock absorber
  192
• 5.4 Removing and installing spring
  193
• 6 Wheel bearing assembly, trailing arm
  203
• 6.1 Assembly overview - wheel bearing
  203
• 6.2 Removing and installing wheel bearing housing
  203
• 6.3 Removing and installing wheel bearing unit
  206
• 6.4 Repairing wheel bearing unit
  208
• 7 Drive shaft
  212
• 7.1 Assembly overview - drive shaft
  212
• 7.2 Removing and installing drive shaft
  213
• 7.3 Dismantling and assembling drive shaft
  215
• 7.4 Loosening and tightening threaded connections of drive shaft
  223
• 7.5 Checking outer constant velocity joint
  224
• 7.6 Checking inner constant velocity joint
  224
• Self-levelling suspension
  227
• 1 Vehicle level sender
  227
• 1.1 Assembly overview - front vehicle level senders
  227
• 1.2 Assembly overview - rear vehicle level senders
  228
• 1.3 Removing and installing front vehicle level senders G78 / G289
  228
• 1.4 Removing and installing rear vehicle level senders G76 / G77
  229
• 2 Air suspension
  231
• 2.1 Overview of fitting locations - electrical components
  231
• 2.2 Overview of fitting locations - air suspension
  233
• 2.3 Assembly overview - air supply unit
  235
• 2.4 Checking air suspension for leaks
  237
• 2.5 Repairing air pipe
  239
• 2.6 Renewing connection piece
  242
• 2.7 Removing and installing air supply unit
  244
• 2.8 Removing and installing solenoid valve block
  246
• 2.9 Removing and installing accumulator
  248
• 2.10 Re-adapting normal level
  249
• 2.11 Removing and installing running gear control unit J775
  250
• 2.12 Removing and installing adaptive suspension compressor electronics J1135
  250
• 2.13 Removing and installing filter
  251
• Wheels, tyres, vehicle geometry
  253
• 1 Wheel alignment
  253
• 1.1 Notes for wheel alignment
  253
• 1.2 Conditions for testing
  253
• 1.3 Test preparations
  254
• 1.4 Specifications for wheel alignment
  257
• 1.5 Wheel alignment procedure
  258
• 1.6 Necessity of wheel alignment
  259
• 1.7 Explanatory notes on production control numbers (PR no.)
  260
• 1.8 Wheel runout compensation
  260
• 1.9 Checking maximum wheel lock
  261
• 1.10 Checking normal level for wheel alignment (vehicles with air suspension)
  261
• 1.11 Adjusting camber on rear axle
  261
• 1.12 Adjusting toe at rear axle
  262
• 1.13 Adjusting camber at front wheels
  263
• 1.14 Adjusting front axle toe
  265
• 2 Adaptive cruise control
  267
• 3 Front camera for assist systems
  268
• 4 Night vision assist
  269
• Steering
  270
• 1 Steering wheel
  270
• 1.1 Assembly overview - steering wheel
  270
• 1.2 Removing and installing steering wheel
  270
• 2 Steering column
  273
• 2.1 Assembly overview - steering column
  273
• 2.2 Checking steering column for damage
  275
• 2.3 Handling and transporting steering column
  275
• 2.4 Removing and installing steering column
  276
• 2.5 Removing and installing intermediate steering shaft
  278
• 2.7 Removing and installing control unit for electronic steering column lock J764
  281
• 3 Steering rack
  283
• 3.1 Assembly overview - steering rack
  283
• 3.2 Handling and transporting steering rack
  285
• 3.3 Removing and installing steering rack
  286
• 3.4 Removing and installing bellows
  290
• 3.5 Removing and installing track rod
  293
• 3.6 Checking dimension of track rod ball joint
  295
• 3.7 Removing and installing track rod ball joint
  295
• 4 Rear wheel steering
  298
• 4.1 Assembly overview - rear wheel steering
  298
• 4.2 Removing and installing steering rack of rear axle
  299
• 4.3 Aligning steering rack of rear axle
  301
• 4.4 Checking alignment of rear axle steering rack
  303
• 4.5 Adjusting rear axle steering rack to zero position
  304