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Cooling System, Charge and Bleed
Inspect
| 1. |
Only use anti-freeze (red) approved by Opel and ensure a
concentration of 50% water and 50% anti-freeze. The purpose of
anti-freeze is not only to protect the entire cooling system
against freezing but also to protect all coolant-affected parts
against corrosion and lime deposit. For this reason, anti-freeze
must be used even in tropical regions.
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| 2. |
The water quality also plays an important role in addition to
the mix ratio. Water of drinkable quality usually meets these
requirements. The quality of purified sea water is inadequate!
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| 3. |
Damage may also be caused to the engine if unauthorised
anti-freeze agent is used!
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| 4. |
If radiator, cylinder head or cylinder head gasket have been
replaced the old coolant must not be re-used.
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Important: Vehicles with air
conditioning: switch air conditioning off and set to ECO mode with
ECC.
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| 5. |
Open cooling system
Warning: Cooling system is under
pressure.
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| • |
Unscrew coolant expansion tank cover
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| 6. |
Open vent screw
Note: The resonator is
not shown in the illustration to provide a better overview.
| • |
Open vent screw (2) with screwdriver (1) via the opening in the
top front (arrow)
Note: The vent screw
can be seen from the direction of view of the coolant expansion
tank.
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| 7. |
Top up the coolant to the lower edge of the overflow tube
(arrow) on the coolant expansion tank
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| 8. |
Close vent screw when coolant flows out of the vent screw
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| 9. |
Seal off cooling system
| • |
Screw in coolant expansion tank cover
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| 10. |
Start engine and allow to warm up
| • |
Allow engine to warm up at idling speed of up to 2500 rpm until
first radiator fan setting switches on
Note: After removing
the heating element, the following additional work must be done:
Briefly pump the accelerator (fuel pulse) 3 times straight after
starting the engine - The engine speed created by the fuel pulse
should not be greater than 2500 rpm.
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| 11. |
Vent cooling system
| • |
Briefly pump the accelerator (fuel pulse) 3 times -- The engine
speed created by the fuel pulse should not be greater than 2500
rpm
Note: After removing
the heating element, let engine run for 2 minutes at 2000 to 2500
rmp. This ensures complete venting of the cooling system.
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| 12. |
Switch engine off and allow to cool
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| 13. |
Check coolant level and correct the coolant to "COLD" mark
(arrow) if necessary
Note: After a test
drive, check the coolant level again and top up coolant to "COLD"
mark if necessary
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