Coolant, Draining And Filling, Low Temperature Circuit: Filling:

• The ignition is off.

NOTE:

The mixture of the water used greatly influences the effectiveness of the coolant. The water quality to be used is based on the contents, which can be specific to a country or even a region. Distilled water fulfills all requirements. For this reason, distilled water must be used when adding coolant or filling coolant for the first time.

Use only coolant additives listed. Refer to the Parts Information. 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 with the correct mixture ratio prevents freezing and corrosion damage and calcium deposits. Additionally, the boiling temperature will be raised. For this reason the cooling system must be filled with coolant additive year-round.

Because of its high boiling point, the coolant contributes to engine reliability under heavy engine loads, particularly in countries with tropical climates.

The :T10007A  MUST be used to determine the current freeze protection value.

Fig 1: Freeze Protection Value On Scale

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Freeze protection must be assured down to minimum -25 °C (-13 °F) (in arctic climatic countries down to approximately -36 °C (-32.8 °F)). The freeze protection may only be increased, when stronger freeze protection is needed due to the climate. But only down to -48 °C (-54 °F), otherwise the effectiveness of the coolant decreases.

The coolant concentration must not be reduced by adding water even in warmer seasons and in warmer countries. The frost protection must be at least -25 °C (-13 °F).

Read the freeze protection value on the scale for the coolant additive that has been added.

The temperature on the :T10007A  corresponds to the >>freezing point<<. At this temperature, ice crystals may begin to form in the coolant.

Used coolant cannot be used again.

Only use water/coolant additive to lubricate the coolant hoses.

-- Connect the coolant hoses -arrows-.

Fig 2: Coolant Hoses -Arrows

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-- Fill the coolant reservoir on the Cooling System Charge Kit:VAS6096  with at least five liters (5.28 quarts) of premixed coolant with the proper mixture ratio:

• Coolant additive (40%) and distilled water (60%) for freeze protection down to -25 °C (-13 °F)
• Coolant additive (50%) and distilled water (50%) for freeze protection down to -36 °C (-32.8 °F)
• Coolant additive. Refer to the Parts Information.

-- Install the Cooling System Tester - Adapter:VAG1274/8  on the coolant expansion tank.

Fig 3: Filling Coolant Reservoir Of Cooling System Charge Unit VAS 6096

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-- Secure the Cooling System Charge Kit:VAS6096  on the adapter.

-- Close valves -A and B- by turning lever at a right angle to the flow direction.

-- Place the drain hose -1- in a small container -2-.

-- Connect the hose -3- to compressed air.

• Pressure: 6 to 10 bar (87 to 145 psi) positive pressure.

-- Open the valve -B- by turning the lever in the flow direction.

Fig 4: Cooling System, Draining And Filling

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• A further vacuum is created in the cooling system by the suction jet pump. The needle on the instrument display must travel into the green region.

-- Briefly open the valve -A- by turning the lever in the flow direction so that the coolant reservoir hose on the Cooling System Charge Kit:VAS6096  fills with coolant.

-- Close the valve -A- again.

-- Leave the valve -B- open another two minutes.

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

-- Close the valve -B-.

Fig 5: Cooling System, Draining And Filling

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• The needle on display must remain in the green range. Only then is there enough vacuum in the coolant system for the filling.

-- Remove the pressure hose.

-- Open the valve -A- slowly.

• Coolant is extracted from the Cooling System Charge Kit:VAS6096  coolant reservoir by pressure in the coolant system and the system is filled.

-- Remove the Cooling System Charge Kit: VAS6096  from the Cooling System Tester - Adapter:VAG1274/8  on coolant expansion tank.

-- Install the Cooling System Tester - Adapter:VAG1274/10  on the adapter.

Fig 6: Identifying V.A.G 1274/10 On V.A.G 1274/8

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-- Fill with coolant until the coolant system tester tube is full. Fill again during the Bleeding Procedure  if necessary.

-- Remove the engine covers -1 and 2- upward.

Fig 7: Engine Cover -2-

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-- Open the bleeder valve -arrow- until the coolant starts to come out.

Fig 8: Open The Valve -Arrow- Until Coolant Starts To Come Out.

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-- Close the bleeder valve.

-- Open the bleeder screws -1 and 2- one after the other until coolant starts to come out.

Fig 9: Bleeder Screws -1 And 2

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-- Close the bleeder screws.

-- Extract coolant until the level is between the MIN and MAX markings.

Fig 10: Extract Coolant Until The Level Is Between The Min And Max Marks

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-- Close coolant reservoir cap.

-- Install the noise insulation. Refer to NOISE INSULATION .