Removing and installing coolant pump - all engine codes except CUKB, CXUA — AUDI

🧭 Before you start

Drain the coolant, remove the air pipe and disconnect the sender connector, charcoal filter hose and breather hose. Take off the toothed belt cover, slacken the pump bolts in sequence 5 to 1 and remove the pump with its belt. Check the gaskets, wet the seal with coolant, fit the belt centred, pre-tighten the bolts, back them off one turn, tension the pump at 30 Nm and tighten in sequence. Fill with fresh coolant.

Fits: Audi A3 (8V, 2012–2020); platform code 85

• Opens: coolant
• Special tools named: T10527/1, VAS 6583, torque wrench
• Renewed: seal, toothed belt as well

Don't miss

• Renew the seal; a new coolant pump always gets a new toothed belt as well.
• Slacken bolts in the order 5 to 1 and tighten them in the specified sequence.
• Pump preload is 30 Nm, applied by a second mechanic on VAS 6583 with a 10 mm hex key.
• Do not support the torque wrench with your other hand or overload it.
• Check the gaskets are correctly seated before positioning the pump.
• Do not reuse drained coolant.

Written for this job from the workshop steps below · TorqFix editorial.

🔧 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.

📐 45 workshop diagrams for CJZA

Real factory drawings for this job — timing marks, bolt locations and routing. Locked in the free view.

📋 Procedure

1. Drain coolant .
2. Loosen hose clips (1, 2) and remove air pipe.
3. Unplug electrical connector (1) at charge pressure sender G31 / intake air temperature sender 2G299. [Note: Disregard (arrows).]
4. Move air hoses clear at air pipe.
5. Release fasteners (arrows) with release tool T10527 and T10527/1, and detach 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. Move clear electrical wiring harness (1) and coolant hose (2).
9. Release hose clips (arrows) and disconnect coolant hoses.
10. Move electrical wiring harness clear (arrows).
11. Unscrew bolts (1, 3) and remove cover (2) for toothed belt for coolant pump.
12. Slacken and remove bolts in the sequence: (5 ... 1).
13. Detach coolant pump with toothed belt. [Note: Renew seal.If coolant pump is being renewed, renew toothed belt as well.Secure all hose connections with the correct type of hose clips (same as original equipment) Electronic parts catalogue.]
14. Check that gaskets are correctly seated (arrows).
15. Lubricate seal for coolant pump lightly with coolant.
16. Fit toothed belt so that it is centred and move coolant pump into installation position.
17. Pre-tighten bolts in the specified sequence:
18. Loosen all bolts again by one turn.
19. Apply torque wrench VAS 6583 with hexagon key (10 mm) (item 6) to coolant pump. [Note: For ease of handling, apply torque wrench VAS 6583 vertically.]
20. Have a second mechanic apply a torque of 30 Nm to coolant pump. [Note: Do not support torque wrench with your other hand.Do not apply excessive force to torque wrench.] — 30 Nm (22 lb-ft)
21. While keeping coolant pump under tension, tighten bolts for coolant pump in specified sequence: [Note: Do not reuse coolant.]
22. Fill up with coolant .

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