TorqFix

Gearbox removal & installation: Daewoo Leganza DOHC 2.0 (X20SED)

Step-by-step gearbox removal & installation for the Daewoo Leganza DOHC 2.0 (X20SED): 64 steps. What to remove, in what order, and what to check after.

Workshop procedure for DAEWOO — the exact step sequence and torque figures, straight from real workshop data.

64 steps 1 engine code

🧭 Before you start

Fits: platform codes 2.0, 16V

  • Opens: coolant, engine oil, power steering fluid

🔧 Engine codes this applies to

X20SED

📋 Procedure

  1. Before disconnecting the battery cable, check the audio system security code
  2. Disconnect the battery
  3. Right-hand engine support:
  4. Drain the engine oil
  5. Vehicles with air conditioning:
X20SED? Steps differ between engine variants — check this job against your exact car before you commit to it. Check my car — free →
  1. Drain the air-conditioning system
  2. Crankshaft pulley:
  3. All vehicles:
  4. Disconnect the inlet air temperature sensor
  5. Remove the air filter/throttle body air hose
  6. Disconnect the crankcase breather hose from the valve cover
  7. Remove the front right wheel
  8. Remove the front right splash guard
  9. Remove the ancillary drive belts
  10. Drain the cooling system
  11. Remove the radiator and fan
  12. Disconnect the water hose from the thermostat
  13. Drain the power steering fluid
  14. Disconnect the power steering hoses
  15. Disconnect the ignition module connector
  16. Disconnect the earth cable from the control unit
  17. Disconnect the oxygen sensor
  18. Disconnect the idle air control connector
  19. Disconnect the MAP sensor connector
  20. Disconnect the throttle valve potentiometer
  21. Disconnect the coolant temperature sensor
  22. Disconnect the alternator electrical connections
  23. Disconnect the fuel and vacuum lines
  24. Remove the fuel rail
  25. Remove the accelerator cable
  26. Disconnect the throttle body preheater hoses
  27. Disconnect the heater hoses from the engine
  28. Disconnect the lower radiator hose
  29. Disconnect the starter motor electrical connections
  30. Vehicles with air conditioning:
  31. Remove the air-conditioning compressor
  32. All vehicles:
  33. Remove the front exhaust pipe
  34. Remove the crankshaft pulley
  35. Disconnect the canister purge solenoid electrical connection and vacuum hose
  36. Disconnect the EGR valve electrical connection(s)
  37. Disconnect the oil pressure switch
  38. Disconnect the crankshaft position sensor
  39. Disconnect the knock sensor
  40. Support the gearbox
  41. Attach the engine to a hoist
  42. Disconnect the gearbox by undoing the bolts
  43. Automatic transmission:
  44. Disconnect the gearbox support
  45. Remove the resonance duct
  46. Remove the right-hand engine support
  47. Disconnect the front engine support
  48. Separate the engine and gearbox while lifting the engine
  49. Lift the engine out of the vehicle

Other DAEWOO procedures

Who makes these pages, and how

TorqFix was built by a mechanic — after a 2,700 km drive with five roadside repairs that no diagnostic tool could explain.

The figures on this page come from manufacturer workshop documentation and are shown as they are. The page is assembled automatically from that data — it is not written by an AI. The AI works in the chat, where it answers for your specific car. It writes nothing here.

Variants of the same model differ. Cross-check torque against the factory manual for your engine before final tightening.

Seen a figure that does not match your manual? Write to us — we correct it and note when. support@torqfix.com

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Workshop data on this page last updated 20 Sep 2026.