Removing and installing compressor (engine codes BLG, BMY) — VW

🧭 Before you start

Fits: VW Touran I (1T, 2003–2015), VW Golf V / Jetta (1K, 2003–2009); platform code 5M1

• Timing position: the crankshaft or camshaft is set and locked during this job
• Special tools named: 16 mm spanner
• Renewed: o-rings

Don't miss

• Renew O-rings on pressure pipe .Before installing, lightly moisten O-rings with engine oil.The pressure pipe can only be pushed in one position into the intake silencer for charge air (note locating element).
• Renew oil seal (1) and ensure it is correctly seated in the groove.
• Ensure correct position of noise insulation in housing.
• Ensure that the vacuum hose is locked onto the union (2).

🔧 Engine codes this applies to

🔩 Torque settings

Values can differ between engine variants — check the code stamped on your block.

ℹ️ Always cross-check the exact figure against your vehicle's factory manual before final tightening — a wrong torque can damage the engine. These values are extracted from workshop data and may not cover every variant or revision.

📋 Procedure

1. Release vacuum hose on vacuum reservoir (arrow) and pull it off.
2. Lift engine cover panel at points (1) and pull it forwards in direction of (arrow).
3. Pull vacuum hose off (arrow).
4. Lift engine cover panel at points (1) and pull it forwards in direction of (arrow).
5. Detach spring-type clip from intake hose (arrow).

6. Remove securing bolt on silencer .
7. Separate fuel supply line (1) and line to activated charcoal filter (2). Press release tabs to do this.
8. Unscrew hose clip (1) at charge air pipe.
9. Remove securing bolt for charge air pipe (2).
10. Remove front right wheel housing liner General body repairs66Wheel housing liner; Removing and installing front wheel housing liner.
11. Remove poly V-belt .
12. Remove right drive shaft Running gear, axles, steering40Repairing drive shafts; Removing and installing drive shafts.
13. Remove Lambda probe after catalytic converter G130(1).
14. Unbolt exhaust pipe from catalytic converter (arrows).
15. Unbolt exhaust pipe to front silencer (arrows).
16. Loosen securing bolts of double clamp (arrows) and pull exhaust pipe to rear.
17. Also pull out exhaust pipe together with flexible joint.
18. Push securing clip at charge air cooler in direction of (arrow) and pull hose (arrow) off.
19. Unscrew securing bolt for charge air pipe (arrow) and remove charge air pipe (1) downwards.
20. Slacken supercharger poly V-belt by swinging tensioning element in direction of (arrow) with 16 mm spanner.
21. Lock tensioning element using locking pin T10060 A.
22. Unscrew securing bolts (arrows) for tensioning element and remove tensioning element.
23. Tightly hold compressor shaft with a spanner (1).
24. Remove securing bolt (2) for pulley and remove pulley and supercharger poly V-belt (3).
25. Opens clips for hose guides (2) and push hoses to one side.
26. Carefully press locking lugs on noise insulation housing (arrows) outwards.
27. Pull off front housing with noise insulation.
28. Unscrew securing bolts (1) for supercharger and remove supercharger together with intake silencer.
29. Pull intake silencer for charge air (2) together with pressure pipe in direction of (arrow). [Note: Renew O-rings on pressure pipe .Before installing, lightly moisten O-rings with engine oil.The pressure pipe can only be pushed in one position into the intake silencer for charge air (note locating element).]
30. ⚠ When installing poly V-belts, observe direction of rotation and make sure they are properly seated on pulleys and tensioning elements. — Push intake silencer for charge air (2) together with pressure pipe in direction of (arrow) into intake connecting pipe.
31. Press intake silencer for charge air (2) against crankcase to allow both dowel sleeves (3) to sit in holes.
32. Turn guide pins T10341 hand-tight to stop in both lower threaded holes.
33. Renew oil seal (1) and ensure it is correctly seated in the groove.
34. Push supercharger together with intake silencer onto guide pins T10341 and tighten upper securing bolts hand-tight.
35. Remove guide pins T10341.
36. Tighten lower securing bolts hand-tight.
37. Tighten securing bolts (1) evenly in diagonal sequence.
38. Install poly V-belt (3) for compressor along with belt pulley.
39. Hold supercharger shaft with 16 mm spanner (1).
40. Install tensioner.
41. Tighten securing bolts (arrows) to 23 Nm. — 23 Nm (17 lb-ft)
42. Hold tensioner using a 16 mm spanner and pull out pin T10060 A.
43. Position housing with noise insulation onto supercharger. [Note: Ensure correct position of noise insulation in housing.]
44. Press housing together with noise insulation against supercharger until locking lugs (arrows) click into place.
45. Place vacuum hose (2) onto vacuum reservoir union (1). [Note: Ensure that the vacuum hose is locked onto the union (2).]
46. Push engine cover panel down at points (1) in direction of (arrow) until it engages.
47. Push engine cover panel down at points (1) in direction of (arrow) until it engages.
48. Fit vacuum hose onto connection (arrow).
49. Start engine and check that belt runs properly.

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