Checking valve timing, engine codes CHPA, CMBA, CPVA, CXSA, CZCA, CPVB, CZDA — VW

🧭 Before you start

Fits: VW Golf VII Variant (BA), VW Golf Sportsvan (AM1, 2014–2020), VW Golf VII (5G, 2012–2020), VW Passat B8 (3G, 2014–), VW Touran II (5T, 2015–)

• Opens: coolant
• Timing position: the crankshaft or camshaft is set and locked during this job
• Special tools named: T10527/1
• Renewed: o-ring of plug

Don't miss

• Turn the crankshaft in the normal direction of rotation until the piston in cylinder 1 shows "“BDC”".
• Locking pin T10340 locks crankshaft in direction of engine rotation only.
• The camshaft clamp T10494 must slide into position easily.Do not knock camshaft clamp into place with any kind of tool.
• Renew bolts that are tightened with specified tightening angle.Renew O-ring of plug if damaged.

🔧 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. Loosen hose clips (1, 2) and remove air pipe.
2. Move air hoses clear at air pipe.
3. Detach connector from charge pressure senderGX26.
4. Release fasteners (arrows) using release tools T10527 and T10527/1.
5. Remove air pipe (1).

6. Press release tabs and disconnect hose (1) for activated charcoal filter.
7. Remove bolts (arrows) and detach crankcase breather hose.
8. Remove noise insulation General body repairs, exterior66Noise insulation; Assembly overview - noise insulation.
9. Drain coolant .
10. Unscrew bolts (A ... D), and push cover (1) for thermostat to one side.
11. Lay wiring harness to one side (arrows).
12. Unscrew bolts (1, 3) and remove cover (2) for toothed belt for coolant pump.
13. Unscrew bolts (arrows) and detach sealing cap (1).
14. Remove ignition coil 1 with output stage N70 and cylinder 1 spark plug .
15. Insert a screwdriver with a shaft length of at least 250 mm into spark plug hole so that it contact piston crown.
16. Turn the crankshaft in the normal direction of rotation until the piston in cylinder 1 shows "“BDC”".
17. Turn the crankshaft further, until the screwdriver has moved (30 mm) in the (direction of the arrows)
18. Unscrew plug for "“TDC”" hole in cylinder block.
19. Screw locking pin T10340 into cylinder block as far as stop and tighten to 30 Nm. — 30 Nm (22 lb-ft)
20. Rotate crankshaft in normal direction of rotation as far as stop. [Note: Locking pin T10340 locks crankshaft in direction of engine rotation only.]
21. If camshafts are not positioned as described, unscrew locking pin T10340, turn crankshaft one rotation further and return to "“TDC”" position. [Note: The camshaft clamp T10494 must slide into position easily.Do not knock camshaft clamp into place with any kind of tool.]
22. Use assembly tool T10487 to push against toothed belt in (direction of arrow).
23. Insert camshaft clamp T10494 as far as stop into camshaft.
24. Tighten bolt (arrow) by hand.
25. Adjust valve timing: removing toothed belt from camshafts .
26. Valve timing is OK. [Note: Renew bolts that are tightened with specified tightening angle.Renew O-ring of plug if damaged.]

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