Removing and installing pressure control valve for crankcase breather system — AUDI

🧭 Before you start

Fits: platform code 42

• Renewed: damaged hoses

Don't miss

• Disregard (item 1).
• Ignore items marked (1) and (arrows).
• Check that crankcase breather hoses are undamaged and securely fitted and renew damaged hoses.Secure all hose connections with the correct type of hose clips (same as original equipment) Electronic parts catalogue.
• Risk of violating emission legislation applying to USA models.Do NOT open hose connection (3). — Install service flap 55.

🔧 Engine codes this applies to

📋 Procedure

1. Fit protective covers on bodywork .
2. Remove wide air cleaner housing/both air cleaner housings .
3. Remove service flap 55.
4. Remove bolts (arrows) at retaining clips for vacuum line.
5. Move clear breather hose (arrow) for gearbox.

6. Press release tab (2) and detach hose from pressure control valve for crankcase breather system. Move hose to side.
7. Press release tabs (3, 4) and disconnect crankcase breather hose. Move hose to side.
8. Seal off open lines and connections with clean plugs from engine bung setVAS 6122. [Note: Disregard (item 1).]
9. Move clear vacuum hose (5) for brake servo.
10. Detach vacuum hose (2) from intake manifold.
11. Loosen hose clip (1) and move air hose clear to one side (vacuum hose (5) for brake servo remains connected).
12. Loosen hose clip (3) and move air hose clear to one side (vacuum hose (4) remains connected).
13. ⚠ Risk of serious damage to gearbox.Cover openings with cloth to prevent bolts and nuts from accidentally falling through the openings (arrow) into the gearbox. — Detach hose (2) from pressure control valve for crankcase breather system and move clear to one side.
14. Disconnect crankcase breather hose (4) from oil reservoir (press release tabs).
15. Remove bolt (3) on retaining clip.
16. Seal off open lines and connections with clean plugs from engine bung setVAS 6122. [Note: Ignore items marked (1) and (arrows).]
17. Remove bolts (arrows).
18. Press release tabs, detach crankcase breather hose (3) from cylinder head cover (right-side) and place on left side.
19. Detach crankcase breather hoses (1) and (2) from intake manifold.
20. Move hose from activated charcoal filter clear at pressure control valve for crankcase breather.
21. Detach pressure control valve for crankcase breather system and disconnect from oil return hose (4).
22. Seal off open lines and connections with clean plugs from engine bung setVAS 6122. [Note: Check that crankcase breather hoses are undamaged and securely fitted and renew damaged hoses.Secure all hose connections with the correct type of hose clips (same as original equipment) Electronic parts catalogue.]
23. ⚠ Risk of violating emission legislation applying to USA models.Do NOT open hose connection (3). — Install service flap 55.
24. Install air cleaner housing .
25. Install engine compartment trim panels 53.

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