7-speed dual clutch gearbox 0BH

Chapter overview

• Technical data
  1
• 1 Safety information
  1
• 1.1 General safety provisions
  1
• 1.2 Safety measures when working on vehicles with a start/stop system
  2
• 1.3 Notes on tow-starting/towing
  2
• 2 Identification
  4
• 2.1 Identification of gearbox
  4
• 3 Repair notes
  5
• 3.1 General information
  5
• 3.2 Rules for cleanliness
  6
• 3.3 General repair instructions
  6
• 3.4 Gaskets and seals
  7
• 3.5 Nuts and bolts
  8
• 4 Technical data
  9
• 4.1 Allocation gearbox - engine
  9
• 4.2 Capacities
  9
• 5 Electrical components
  11
• 5.1 Overview of fitting locations - electrical components
  11
• Clutch
  12
• 1 Clutch
  12
• 1.1 Assembly overview - dual clutch
  12
• 1.2 Removing and installing clutch end cover
  13
• 1.3 Removing dual clutch
  18
• 1.4 Installing dual clutch
  21
• Controls, housing
  32
• 1 Mechatronic unit
  32
• 1.2 Removing and installing mechatronic unit for dual clutch gearbox J743 (gearbox removed)
  40
• 2 Removing and installing gear oil cooler
  49
• 2.1 Renewing bleeder
  51
• 3 Emergency release of selector lever
  53
• 4 Removing and installing selector lever handle
  54
• 4.1 Removing and installing handle
  54
• 4.2 Moving push-button in the handle to installation position
  58
• 5 Selector mechanism
  60
• 5.1 Overview - selector mechanism
  60
• 5.2 Removing and installing selector mechanism
  61
• 5.3 Checking selector lever cable
  65
• 5.4 Adjusting selector lever cable
  66
• 6 Checking selector mechanism
  68
• 6.1 Selector lever in “P” position and ignition switched on
  68
• 6.2 Selector lever in “N” position and ignition switched on
  68
• 6.3 Selector lever in position “Tiptronic”
  68
• 6.4 Ignition and light switched on
  69
• 6.5 Selector lever position indicator
  69
• 7 Dismantling and assembling gearbox
  70
• 7.1 Assembly overview - gearbox
  70
• 8 Removing and installing gearbox
  76
• 8.1 Removing gearbox
  76
• 8.2 Installing gearbox
  97
• 8.3 Specified torques
  97
• 9 Transporting gearbox and securing to assembly stand
  101
• 10 Bevel box
  102
• 10.3 Detaching bevel box from gearbox – gearbox removed
  114
• 11 Oil and oil filter
  119
• 11.1 Renewing oil filter
  120
• 11.2 Checking oil level and topping up
  121
• 11.3 Draining and filling oil
  124
• Gears, shafts
  129
• 1 Currently, no repairs can be made to gears and shafts
  129
• Final drive - differential
  130
• 1 Bevel box
  130
• 1.1 Assembly overview - bevel box
  130
• 2 Overview of fitting locations - oil seals
  133
• 3 Renewing seals on gearbox
  134
• 3.1 Renewing oil seal for left flange shaft
  134
• 3.2 Renewing right seal (between gearbox and bevel box) on gearbox
  136
• 4 Renewing seals on bevel box
  138
• 4.1 Renewing seals on left (between bevel box and gearbox)
  139
• 4.2 Renewing right seal (drive shaft side)
  142
• 4.3 Renewing output flange oil seal (bevel box removed)
  144
• 4.4 Renewing needle bearing (polygon bearing) for stub shaft
  150
• 5 Checking and topping up gear oil in bevel box
  155
• 5.1 Checking gear oil in bevel box
  155
• 5.2 Filling gear oil in bevel box
  155
• 5.3 Specified torque
  158