Removing and installing sealing flange on gearbox side: VW Polo 6C (AXZ, BHK, BHL, BLV, …)

🧭 Before you start

Fits: VW Polo 6C (2014–2017); platform code 614

• Timing position: the crankshaft or camshaft is set and locked during this job
• Special tools named: locking pin

Don't miss

• Locking pin T10340 locks crankshaft in direction of engine rotation only.
• The sealing flange (1) is pressed off crankshaft (3) together with the sender wheel (2).
• Do not take the sender wheel out of the sealing flange or rotate it out of position.
• When installing sealing flange, ensure that sender wheel remains fixed in assembly device.
• The guide pin for diesel engines (black knob) must not be inserted in threaded hole of crankshaft.

🔧 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. Remove noise insulation General body repairs, exterior66Noise insulation; Assembly overview - noise insulation.
2. Removing gearbox 34Removing and installing gearbox.
3. Remove clutch 30Removing and installing clutch.
4. Remove flywheel .
5. Remove drive plate .

6. Remove intermediate plate (1) from dowel sleeves (arrows A).
7. Guide intermediate plate (1) upwards.
8. While doing so, pull retaining lug (arrow B) of intermediate plate (1) out of recess behind sealing flange.
9. Remove ignition coil with output stage for cylinder 1 .
10. Unscrew spark plug for no. 1 cylinder using spark plug socket, e.g. 3122 B.
11. Carefully insert a screwdriver with a shaft length of at least 250 mm in (direction of arrow) into spark plug hole so that it contacts piston crown.
12. Turn crankshaft in direction of engine rotation to "“BDC”" for no. 1 cylinder.
13. Turn crankshaft further in direction of engine rotation, until screwdriver has moved 35 mm upwards in (direction of arrow).
14. Unscrew plug for "“TDC”" hole in cylinder block .
15. Unscrew plug for "“TDC”" hole in cylinder block.
16. ⚠ Risk of damage to the engine.If locking pin T10340 cannot be screwed in as far as stop, this indicates that crankshaft is not in the correct position!In this case, proceed as follows:Unscrew locking pin.Turn crankshaft 90° in direction of engine rotation.Screw locking pin T10340 into cylinder block as far as stop and tighten to 30 Nm.Turn crankshaft in direction of engine rotation as far as the stop. — Screw locking pin T10340 into cylinder block as far as stop and tighten to 30 Nm. — 30 Nm (22 lb-ft)
17. Rotate crankshaft in normal direction of rotation as far as stop. [Note: Locking pin T10340 locks crankshaft in direction of engine rotation only.]
18. Remove sump (bottom section) .
19. Remove upper part of sump .
20. Remove engine speed sender G28.
21. Unscrew bolts (arrows) for sealing flange (1).
22. To press off, screw 3 bolts M6 x 35 into sealing flange (1)(arrows). [Note: The sealing flange (1) is pressed off crankshaft (3) together with the sender wheel (2).]
23. Screw bolts alternately into sealing flange not more than 1/2 turn at a time.
24. Remove sealing flange (1) together with sender wheel (2). [Note: The sealing flange with a PTFE seal is equipped with a sealing lip support ring (2). This support ring serves as a fitting sleeve and must not be removed prior to installation.Sealing flange and sender wheel (1) must not be separated or turned after removal from packaging.The sender wheel (1) is held in its installation position on the locating pin of the assembly tool T10134.Sealing flange and oil seal form one unit and must only be renewed together with the sender wheel.The assembly tool T10134 is held in its position relative to the crankshaft by a guide pin inserted into a hole in the crankshaft .]
25. Screw on nut (B) until just before it touches the clamping surface (A) of the threaded spindle.
26. Clamp assembly device T10134 at clamping surface (A) of threaded spindle in a vice (1).
27. Press assembly housing (C) downwards until it rests against nut (B).
28. If fitted, remove securing clip (arrow) from new sealing flange. [Note: Do not take the sender wheel out of the sealing flange or rotate it out of position.]
29. Place sealing flange (1) with front side facing downwards on a clean level surface.
30. Push sealing lip support ring (2) downwards in (direction of arrow) until it rests against flat surface.
31. Place sealing flange (1) with front side facing downwards onto assembly tool T10134 so that locating pin (D) is seated in hole (3) in sender wheel hole (2).
32. Screw knurled screws (H) into sealing flange (1).
33. Press sealing flange (1) and sealing lip support ring (2) against surface of assembly tool T10134 whilst tightening knurled screws.
34. This prevents the locating pin from slipping out of the sender wheel hole.
35. When installing sealing flange, ensure that sender wheel remains fixed in assembly device.
36. Screw on nut (B) until it reaches end of threaded spindle.
37. Press threaded spindle of assembly tool T10134 in (direction of arrow), until nut (B) rests against assembly housing (C).
38. Align flat side of assembly housing to sealing surface of cylinder block on sump side.
39. Attach assembly tool T10134 together with sealing flange (1) to crankshaft flange (2).
40. To do this, screw hexagon socket head bolts (E) into crankshaft flange (approx. 5 full turns) using a hexagon key.
41. Push guide pin for petrol engines (red knob) (F) into crankshaft flange.
42. To guide sealing flange (1), screw two M6 × 35 mm bolts (3) into cylinder block (2).
43. Push assembly housing (C) by hand in (direction of arrow) until sealing lip support ring (1) rests against crankshaft flange (2).
44. Make sure that guide pin for petrol engines (red knob) (F) is properly seated in hole in crankshaft. This ensures that the sender wheel reaches its final installation position. [Note: The guide pin for diesel engines (black knob) must not be inserted in threaded hole of crankshaft.]
45. Tighten the two hexagon socket head bolts of the assembly tool hand-tight.
46. Screw nut (B) by hand onto threaded spindle until it rests against assembly housing (C).
47. Tighten nut (B) of assembly tool T10134 to 35 Nm. — 35 Nm (26 lb-ft)
48. Screw on nut (B) until it reaches end of threaded spindle.
49. Unscrew the two bolts (2) from cylinder block.
50. Pull guide pin for petrol engines (red knob) (F) out of crankshaft flange.
51. Unscrew knurled screws (H) from sealing flange (1).
52. Unbolt assembly tool T10134 from crankshaft flange, unscrewing hexagon socket head bolts (E) from crankshaft flange.
53. Remove sealing lip support ring.
54. Position depth gaugeVAS 6082 on crankshaft flange (2).
55. Measure distance between crankshaft flange (2) and sender wheel (1).
56. Measure distance (a) between crankshaft flange (2) and sender wheel (1).
57. If specification is not achieved, press sender wheel further in .
58. If specification is achieved, proceed with subsequent work steps .
59. Secure assembly tool T10134 on crankshaft flange (2).
60. Make sure that locating pin of assembly tool T10134 is properly seated in sender wheel hole.

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