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A5

Power transmission > Servicing 7-speed dual clutch gearbox 0B5 (S tronic) > Gearbox,mechanics,gears,shafts,internal operation > Mechatronic unit for dual clutch gearboxJ743

Exploded view - mechatronic unit for dual clutch gearboxJ743
   
Exploded view - mechatronic unit for dual clutch gearbox -J743-
1 - ATF drain plug
q   Tightening torque → 7-speed dual clutch gearbox 0B5 (S tronic); Rep. gr.34
2 - Seal
q   Renew
3 - Bolt
q   Tightening torque and sequence → Fig.
4 - Spreader rivet
q   In original equipment version for securing gasket to ATF oil pan
q   Not essential for installation
5 - Magnet
q   2x
q   Insert in recess in ATF oil pan
q   Ensure that the magnet is in full contact with the ATF oil pan
6 - Bolt
q   Renew
q   Tightening torque and sequence → Fig.
7 - O-rings
q   Renew
8 - ATF pressure pipes (clutch pressure)
9 - Retaining plate
q   For ATF pressure pipes (clutch pressure)
10 - Bolt
q   10 Nm
11 - O-rings
q   Renew
12 - O-rings
q   Renew
13 - ATF pipes
q   Different versions possible
14 - O-rings
q   Renew
15 - O-ring
q   Renew
q   Different versions possible
16 - Filter housing for exchangeable ATF filter
q   For gearboxes with exchangeable ATF filter
q   Different versions possible
17 - O-ring
q   For gearboxes with exchangeable ATF filter
q   Renew
18 - Cap for ATF filter
q   For gearboxes with exchangeable ATF filter
q   8 Nm
19 - Exchangeable ATF filter
q   Renew after changing ATF or after performing gearbox repairs
q   Note correct allocation → Electronic parts catalogue (also called filter element)
q   → Chapter „Removing and installing exchangeable ATF filter“
20 - Bolt
q   3x
q   10 Nm
q   For gearboxes with exchangeable ATF filter
21 - O-rings
q   Renew
q   For gearboxes with exchangeable ATF filter
22 - ATF line (return)
q   For gearboxes with exchangeable ATF filter
q   Removing and installing → 7-speed dual clutch gearbox 0B5 (S tronic); Rep. gr.34
23 - ATF line (supply)
q   For gearboxes with exchangeable ATF filter
q   Removing and installing → 7-speed dual clutch gearbox 0B5 (S tronic); Rep. gr.34
24 - Bolt
q   Tightening torque → 7-speed dual clutch gearbox 0B5 (S tronic); Rep. gr.34
q   For gearboxes with exchangeable ATF filter
25 - Bolt
q   3x
q   10 Nm
q   For gearboxes with in-line ATF filter
26 - ATF line (return)
q   For gearboxes with in-line ATF filter
q   Removing and installing → 7-speed dual clutch gearbox 0B5 (S tronic); Rep. gr.34
27 - Bolt
q   Tightening torque → 7-speed dual clutch gearbox 0B5 (S tronic); Rep. gr.34
q   For gearboxes with in-line ATF filter
28 - O-rings
q   Renew
q   For gearboxes with in-line ATF filter
29 - Connection piece for ATF lines
q   For gearboxes with in-line ATF filter
30 - In-line ATF filter
q   Renew in-line ATF filter after replacing or repairing gearbox
q   Removing and installing → 7-speed dual clutch gearbox 0B5 (S tronic); Rep. gr.34
31 - ATF filler and inspection plug
q   Tightening torque → 7-speed dual clutch gearbox 0B5 (S tronic); Rep. gr.34
32 - O-rings
q   Renew
33 - Bolt
q   8 Nm
34 - Connector housing
–  To remove, unscrew bolt -item 33- and turn connector housing anti-clockwise
35 - Gearbox housing
36 - O-rings
q   Renew
37 - ATF pipes
q   Different versions are available; for correct version refer to → Electronic parts catalogue
38 - Bolt
q   8 Nm
39 - Wiring harness for speed sensors
40 - O-ring
q   Renew
41 - ATF intake filter
q   Removing and installing → Chapter
42 - Mechatronic unit for dual clutch gearbox -J743-
q   Removing and installing → Chapter
l  After renewing the mechatronic unit for dual clutch gearbox -J743-, run the appropriate „Guided Function“ on a vehicle diagnostic tester → 7-speed dual clutch gearbox 0B5 (S tronic); Rep. gr.34.
l  Disconnecting printed circuits from mechatronic unit for dual clutch gearbox -J743- → Chapter
43 - Gasket
q   Renew
q   Installing → Anchor
44 - ATF oil pan
q   Removing and installing → Chapter

   
Tightening torque and sequence for ATF oil pan
–  Tighten bolts in 2 stages as follows:
1.  Screw in bolts -arrows- by hand.
2.  Tighten bolts -1 … 15- diagonally in stages to 10 Nm.
  A34-10429
Tightening torque and sequence for mechatronic unit
–  Tighten bolts to 10 Nm in sequence -1 ... 6-.
  A34-10312

Power transmission > Servicing 7-speed dual clutch gearbox 0B5 (S tronic) > Gearbox,mechanics,gears,shafts,internal operation > Mechatronic unit for dual clutch gearboxJ743

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