Filling: Using cooling system charge unit VAS 6096 only — VW

Filling: Using
cooling system charge unit
VAS 6096
only
Cooling system is leak tight
Fill coolant reservoir of
VAS 6096
with at least 8 litres of pre-mixed coolant in correct mixture ratio:
Screw
adapter for cooling system tester
V.A.G 1274/8
onto coolant expansion tank.
Mount
cooling system charge unit
VAS 6096
on adapter
V.A.G 1274/8
.
Feed vent hose
1
into a small container
2
.
Note
Exhaust air takes a slight quantity of coolant along with it; this should be collected.
Close valves
A
and
B
(turn lever transverse to direction of flow to do this).
Connect hose
3
to compressed air.
Pressure: 6 … 10 bar.
Open valve
B
; turn lever in direction of flow to do this.
In cooling system, vacuum is generated by suction jet pump; needle of gauge must move into green area.
Also briefly open valve
A
(turn lever in direction of flow to do this) so that hose on coolant expansion tank of cooling system charge unit
VAS 6096
fills with coolant.
Close valve
A
again.
Leave valve
B
open for a further 2 minutes.
In cooling system, vacuum continues to be generated by suction jet pump; needle of gauge must remain in green area.
Close valve
B
.
The needle on the gauge should remain in the green zone; this means that the vacuum in the cooling system is sufficient for subsequent filling.
Note
If the needle does not reach the green zone, repeat the process.
If vacuum drops, cooling system must be checked for leaks.
Pull off 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.
Fit expansion tank cap.
Start engine. Keep engine speed at approx. 2000 rpm for approx. 3 minutes.
Then run engine at idling speed until radiator fan cuts in.
Check coolant level and top-up if necessary. When the engine is at normal operating temperature, the coolant level must be at the upper mark; when the engine is cold, in the middle of the hatched field.