Filling Audi A8 D3 рестайлинг

Filling

Note. The cooling system is filled all year round with a mixture of frost and corrosion protection additives and water. Use only coolant additive Plus G 012 A8F A1 (short: G12+) "according to TL VW 774 F". Other coolant additives may above all reduce the corrosion protection effect significantly. The damage resulting from this may lead to loss of coolant and consequently to severe engine damage. Coolant additive G12+ can be combined with additives G11 and G12. G12+ and coolant additives with the designation "according to TL VW 774 F" reduce frost and corrosion damage as well as lime deposits. They also raise the boiling point. For this reason the system must be filled all year round with frost and corrosion protection additives. Because of its high boiling point, the coolant improves engine reliability under heavy loads, particularly in countries with tropical climates. Protection against frost must be assured to about -25°C (in arctic climatic countries to about -35°C). The coolant concentration must not be reduced by adding water even in warmer seasons and in warmer countries. The coolant additive portion must be at least 40%. If for climatic reasons greater frost protection is required, the amount of G12+ can be increased, but only up to 60% (frost protection to about -40°C), otherwise frost protection and cooling effectiveness will be reduced. Only clean drinking water may be used for mixing coolant. If the radiator, heater core, cylinder head and cylinder head gasket or cylinder block is replaced, completely replace the engine coolant. Dirty coolant must not be re-used. For coolant G12+ , use refractometer T10007 to test frost protection in cooling system. Replace seal. Secure all hose connections using hose clamps appropriate for the model type .

1. Connect coolant hose - 1 -.
2. Install drain plug - 2 - at oil filter bracket with new gasket in engine at right.

1. Install drain plug - 2 - at oil filter bracket with new gasket in engine at left.

Scheme 280

1. Fill replacement reservoir VAS 6096/1 with at least 14 liters of pre-mixed coolant with correct mixture ratio

1. G12+ (40%) and water (60%) for frost protection up to -25°C
2. G12+ (50%) and water (50%) for frost protection up to -35°C
3. G12+ (60%) and water (40%) for frost protection up to -40°C

1. Install adapter V.A.G 1274/8 on expansion tank.
2. Assemble cooling system charge unit VAS 6096 on adapter V.A.G 1274/8.
3. Place air outlet hose - 1 - into a small container - 2 -.

1. A small amount of coolant is drawn off with the discharged air which should be collected.

1. Close both valves - A - and - B - (lever perpendicular to direction of flow).
2. Connect hose - 3 - to pressurized air.

1. Pressure: 6 to 10 bar positive pressure

Scheme 281

1. Open valve - B - (lever in direction of flow).

1. A vacuum is created in cooling system by suction jet pump.
2. Needle on instrument display must travel into green region.

1. Also, open valve briefly - A - (lever in direction of flow) so that hose of cooling system charge unit VAS 6096/1 is filled with coolant.
2. Close valve - A - again.
3. Let valve - B - remain open another 2 minutes.

1. A further vacuum is created in cooling system by suction jet pump.
2. Needle on instrument display must still remain in green region.

1. Close valve - B -.

1. Needle in display instrument must remain in green region, then sufficient vacuum in cooling system is obtained for upcoming filling.
2. If needle stands below green region, repeat procedure.
3. If vacuum decreases, cooling system is leaking.

1. Disconnect pressurized air hose.
2. Open valve - A -.

1. The vacuum in cooling system has effect of extracting coolant from replacement reservoir VAS 6096/1 so that cooling system is filled.

1. Detach cooling system charge unit VAS 6096 from coolant expansion tank.

Scheme 282

1. Connect adapter for VAG1274 tester V.A.G 1274/10 to adapter V.A.G 1274/8.

1. Remove rubber seal - 1 - for plenum chamber cover.
2. Remove plenum chamber cover - 2 -.

Scheme 283

1. Open bleeder screws - 1 - and - 2 -.
2. Fill up coolant until it escapes at bleeder screws - 1 - and - 2 - without bubbles.
3. Close bleeder screws.
4. Close expansion tank.

1. If present, switch on auxiliary heater for about 30 seconds.
2. Set interior temperature to "HI".
3. Let engine run at 2000 RPM for 3 minutes.
4. Let engine run at idle long enough until both large coolant hoses on main cooler are warm.

1. Let engine run at 2000 RPM for 1 minute.
2. Turn off engine and allow it to cool off.

Scheme 284

1. Check coolant level.

1. With cold engine, coolant level must be at MAX marking.
2. Coolant level may be above MAX marking with engine at operating temperature.

Scheme 285

Special tools, testers and auxiliary items required

1. Cooling system tester V.A.G 1274
2. Adapter for cooling system tester V.A.G 1274/8
3. Adapter for cooling system tester V.A.G 1274/9

Test requirements

1. Engine at operating temperature.

Test sequence

1. Open cap of coolant expansion tank.

Scheme 286

1. Attach cooling system tester V.A.G 1274 with adapter V.A.G 1274/8 to expansion tank.
2. Generate a positive pressure of approx. 1.0 bar using hand pump of cooling system tester.
3. If pressure decreases, search for leaking areas and repair malfunction.

Pressure relief valve in cap, checking

Scheme 287

1. Attach cooling system tester V.A.G 1274 with adapter V.A.G 1274/9 to cap.
2. Operate hand pump.

1. Pressure release valve must open at a positive pressure of 1.4 to 1.6 bar.

Scheme 288

1 - 14 Nm

1. Bolt class 10.9

2 - 10 Nm

3 - Thermostat housing

4 - O-ring

1. Replace

5 - Coolant thermostat

1. Removing and installing --> «Coolant thermostat, removing and installing, checking»(/audi/a8/d3-2005-2007/remont/cooling-fan/#42l-v8-5v-engine-mechanical-engine-codes-bfm__coolant-thermostat-removing-and-installing-checking)
2. Checking --> «Thermostat, checking»(/audi/a8/d3-2005-2007/remont/cooling-fan/#42l-v8-5v-engine-mechanical-engine-codes-bfm__thermostat-checking)
3. Installed location --> «Coolant thermostat installation location»(/audi/a8/d3-2005-2007/remont/cooling-fan/#42l-v8-5v-engine-mechanical-engine-codes-bfm)

6 - Gasket

1. Replace

7 - Mechanical coolant pump

1. Removing and installing --> «Coolant pump, removing and installing»(/audi/a8/d3-2005-2007/remont/cooling-fan/#42l-v8-5v-engine-mechanical-engine-codes-bfm)

8 - 14 Nm

1. Bolt class 10.9

9 - Pin bolt, 9 Nm

Scheme 289

1. Bleeder valve - arrow - toward top.

Scheme 290

Special tools, testers and auxiliary items required

1. Drip tray for workshop crane VAS 6208
2. Hose clamp pliers V.A.G 1921
3. Spring-type clip pliers V.A.S 5024 A

Removing

1. Drain coolant --> «Cooling system, draining and filling»(/audi/a8/d3-2005-2007/remont/cooling-fan/#42l-v8-5v-engine-mechanical-engine-codes-bfm) .
2. Toothed belt, removing --> «Toothed belt, removing and installing»(/audi/a8/d3-2005-2007/remont/cooling-fan/#42l-v8-5v-engine-mechanical-engine-codes-bfm) .

Scheme 291

1. Remove nuts - 2 - for toothed belt guard at left rear.
2. Remove bolts - 1 - for coolant pump and remove coolant pump.

Installing

Installation is in reverse order of removal, note the following

Note. Replace seals.

1. Clean sealing surfaces at cylinder block.
2. Install toothed belt (adjust timing) --> «Toothed belt, removing and installing»(/audi/a8/d3-2005-2007/remont/cooling-fan/#42l-v8-5v-engine-mechanical-engine-codes-bfm) .
3. Fill with coolant.
4. Install torque support --> «Torque support (with torque support valve N382), assembly overview»(/audi/a8/d3-2005-2007/remont/cooling-fan/#42l-v8-5v-engine-mechanical-engine-codes-bfm) .

Torque specifications

1. 1) Bolt class 10.9