Cooling System, Flushing: Notes
Special Tools And Workshop Equipment Required
- Coolant Flushing and Filling Device:VAS531007
- Cooling System Tester - Directional Valve:VAS691005/5
- Hose Clip Pliers:VAS6362
- Suction jet pump from the Cooling System Charge Kit:VAS6096
- Shop Crane - Drip Tray:VAS6208
- Refractometer:T10007A
- Compressed air connector with 6 to 10 bar (101.52 psi to 145.03 psi) pressure
- Elbow Assembly Tool:T10118
The Cooling System Must Be Flushed If The Following Abnormalities Occur:
- The coolant is strongly colored or discolored.
- The coolant has an unnatural or unusual odor.
- Particles are visible in the coolant.
- Strong deposits have accumulated in the coolant expansion tank.
NOTE:
Coolant has drained from flushing. Then the cooling system is filled with distilled water.
The cooling system is then flushed with approximately 20 liters of distilled water. The distilled water is replaced with coolant (mixture ratio 50:50).
Used coolant cannot be used again.
Brief instructions can be found here. Refer to COOLING SYSTEM, FLUSHING, BRIEF INSTRUCTIONS . The primary steps of the procedure are described in the brief instructions. The brief instructions can be printed and checked off during the procedure.
Coolant Flushing and Filling Device:VAS531007 Schematic Overview:
- Reservoir with Distilled Water
- Fill with 30 liters (8 gallons) of distilled water
- Reservoir with Coolant
- Fill with 30 liters (8 gallons) of coolant
- Freeze protection through approximately -36 °C (-32.8 °F)
- Empty Container
- For used coolant
- Empty Container
- For used coolant
- Suction Hose
- Comes from the connection 2 on the viewing glass
- Viewing Glass
- If colored the viewing glass must be cleaned with a nylon brush
- Pump
- Cut-off pressure approximately 1.5 bar (21.75 psi)
- Valve Block
- With pressure gauge and shut-off valves
- Drain Hose
- Is connected to the valve block to reduce the pressure
- Flushing Hoses
- Is connected for flushing on the coolant expansion tank bleeder hose
- Comes from the connection 1 on the viewing glass
- If not used seal with plugs
- Plugs
- Hose Clamps
- Quantity: 4
- Cleaning Adapters
- Approximately 15 cm long
- For cleaning the Coolant Flushing and Filling Device:VAS531007 after flushing
- Is connected between the valve block and the flushing hose -item ) COOLING SYSTEM, FLUSHING - Flushing Hoses
- Extraction Adapter
- Approximately 100 cm long
- Is connected to extract the coolant from the suction hose -item ) COOLING SYSTEM, FLUSHING - Suction Hose