2.3 Assembly overview - coolant temperature sender

– Open valve -B-; turn lever in direction of flow to do this. • The suction-jet pump reduces pressure in the cooling system to below atmospheric pressure. The needle on the gauge should move into the green zone. – Also briefly open valve -A- (turn lever in direction of flow to do this) so that the hose on the coolant expansion tank of VAS 6096- fills with coolant.

– Close valve -A- again. – Leave valve -B- open for a further 2 minutes. • The suction-jet pump will continue generating a vacuum in the cooling system. The needle on the gauge must remain in the green zone. – Close valve -B-.

• The needle on the gauge must stay in the green zone. The vacuum in the cooling system is then sufficient for subsequent filling.

Note

♦ If the needle does not reach the green zone, repeat the proc‐ess.

♦ If vacuum drops, cooling system must be checked for leaks.

– Detach the compressed air hose. – Open valve -A-. • The vacuum in the cooling system causes the coolant to be drawn out of the coolant expansion tank of -VAS 6096- ; the cooling system is then filled. – Remove cooling system charge unit - VAS 6096- from coolant expansion tank.

– Fill coolant up to “max.” mark. – Install noise insulation ⇒ General body repairs, exterior; Rep.

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– Set temperature regulator to “HI”. – Switch off air conditioner compressor. To do this, press AC button.

• LED in the button must not light up. – Start engine and run it for max. 2 min. at a speed of approx. 1500 rpm. – Fill coolant up to the overflow hole of the coolant expansion tank while the engine is running. – Tighten cap of coolant expansion tank until it engages. – Run engine at idling speed until both large coolant hoses on radiator are heated up. – Switch off engine and let it cool off.