Attaching coolant expansion tank

WARNING: Hot surfaces.
Risk of burning!

Perform all work only on components that have cooled down.

NOTE: RISK OF DAMAGE
Injectors contaminated with coolant.
Damage to and failure of injectors that were coated with coolant for an extended period.

Covering injectors with suitable auxiliary materials before testing or topping up the coolant is mandatory.
Covering injectors with suitable auxiliary materials before working on the cooling system in the area of the injectors is mandatory.
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.

Check

Check whether the foam on the holder of the coolant expansion tank (1) is damaged, porous, loose or present in the area (2).

Courtesy of BMW OF NORTH AMERICA, INC.

Result

» The foam is damaged and/or porous or loose.

Measure
- Replace foam.
  Parts: foam
Measure
- Clean foam residue or residual adhesive from the bonding surface in the area (2) with the cleaning agent R2.
  Parts: Cleaning agent
Measure
- Bond foam.
Result

» Foam is not installed.

Measure
- Retrofit foam.
  Parts : foam
Measure
- Clean the bonding surface in the area (2) with the cleaning agent R2.
  Parts: Cleaning agent
Measure
- Bond foam.
NOTE:
RISK OF DAMAGE
Injectors contaminated with coolant.
Damage to and failure of injectors that were coated with coolant for an extended period.
- Covering injectors with suitable auxiliary materials before testing or topping up the coolant is mandatory.
- Covering injectors with suitable auxiliary materials before working on the cooling system in the area of the injectors is mandatory.
- 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).
Courtesy of BMW OF NORTH AMERICA, INC.
CAUTION:
Swirling dirt particles caused by compressed air.
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!
- 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).