Removing coolant expansion tank
WARNING:
Hot fluids
.
Risk of scalding!
Risk of scalding!
- Conduct all work in the vehicle wearing appropriate personal protective equipment only.
NOTE:
TECHNICAL INFORMATION
Collect and dispose of emerging fluids. Observe country-specific waste disposal regulations.
Collect and dispose of emerging fluids. Observe country-specific waste disposal regulations.
Preliminary work
- Refer to DEACTIVATING VEHICLE ELECTRICAL SYSTEM .
- Refer to REMOVING THE ACOUSTIC COVER .
- Refer to REMOVING THE COVER PANEL OF THE SLAVE DME CONTROL DEVICE .
- Refer to REPLACING HOLDER OF THE DME CONTROL UNIT FOR CYLINDERS 5 TO 8 .
WARNING:
Hot surfaces
.
Risk of burning!
Risk of burning!
- Perform all work only on components that have cooled down.
NOTE:
RISK OF DAMAGE
Injectors contaminated with coolant .
Damage and failure of injectors that have been wetted with coolant for a long time .
Injectors contaminated with coolant .
Damage and failure of injectors that have been wetted with coolant for a long time .
- Covering injectors with suitable auxiliary materials before testing or topping up the coolant is mandatory.
- Always cover injectors with suitable aids before working on the cooling system in the vicinity of the injectors.
- If necessary, draw off all of the coolant from the coolant expansion tank.
- Always clean injectors or injector shafts contaminated with coolant (e.g. with compressed air).
NOTE:
TECHNICAL INFORMATION
Collect and dispose of emerging fluids. Observe country-specific waste disposal regulations.
Collect and dispose of emerging fluids. Observe country-specific waste disposal regulations.
- Loosen screws (1).
- Unlock plug connection (2) and disconnect.
- Prepare a standard waterproof rubber mat (1).
Letter: Dimension in cm A 32.00 B 52.00 - Unclamp the coolant hoses with clamping pliers (3).
- Raise coolant expansion tank (2).
- Position the rubber mat (1) between the expansion tank and the cylinder head cover.
- Unclip the fuel lines in area (4) from expansion tank (2).
- Ensure that rubber mat (2) covers the areas between expansion tank (1) and the cylinder head cover in the area of injector shafts (3).
- Unlock and disconnect coolant line connections (4).
- Ensure that radiator cap (2) is sealed.
- Ensure that fuel lines are unclipped in area (3).
- Unlock and disconnect coolant lines (1).
- Seal the connections to the coolant expansion tank with seal plugs (1) part number 17 12 8 515 062.
- Set coolant expansion tank (1) aside.
- Ensure that the coolant hose is clamped with clamping pliers.
- Unlock and disconnect coolant hose in area (1).
- Remove the coolant expansion tank (2).
NOTE:
RISK OF DAMAGE
Injectors contaminated with coolant .
Damage and failure of injectors that have been wetted with coolant for a long time .
Injectors contaminated with coolant .
Damage and failure of injectors that have been wetted with coolant for a long time .
- Covering injectors with suitable auxiliary materials before testing or topping up the coolant is mandatory.
- Always cover injectors with suitable aids before working on the cooling system in the vicinity of the injectors.
- If necessary, draw off all of the coolant from the coolant expansion tank.
- Always clean injectors or injector shafts contaminated with coolant (e.g. with compressed air).
CAUTION:
Swirling dirt particles caused by compressed air
.
Injury hazard!
Injury hazard!
- Collect dirt particles, e.g. when blowing out, use cloth to do so.
- Wear safety goggles.
CAUTION:
Materials harmful to health
.
Contact with fluids harmful to health!
Contact with fluids harmful to health!
- Note and follow safety instructions on containers.
- Conduct all work in appropriate personal protective equipment only.
- Check the injector shafts for coolant residues (1).
- If there are coolant residues (1) in the injector shaft: Clean the injector shafts with an air gun (2).