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Home >> BMW >> 2021 >> 745e xDrive >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> Engine - Cylinder Head/Valve Cover (2 Of 6) - Repair (G12) >> 11 12 Cylinder Head, Valve Cover >> 11 12 001 Replace the cylinder head cover (740e xDrive PHEV 2017-2019) >> Removing the cylinder head cover

Removing the cylinder head cover

WARNING: Working on fuel system. 
Risk of fire! Danger of explosion! 
  • When working on the fuel system, make sure the workstation has sufficient ventilation, e.g., by means of extraction.
  • Tightly seal off open lines and connections; collect any leakage fuel directly at the point of exit.
  • No fire, sparks, open flames or smoking.
CAUTION: On releasing high pressure line, fuel may emerge at high speed. 
Injury hazard! 
  • Wear suitable personal protective equipment.
  • Before performing any installation work, allow cooling system to cool down to less than 40°C.
  • Note warnings on cylinder head cover.
NOTE: TECHNICAL INFORMATION 
Collect and dispose of emerging fluids. Observe country-specific waste disposal regulations.

Preliminary work 

Bolts of the cylinder head cover 

Fig 1: Cylinder Head Cover Bolts Loosening Sequence
G15126904Courtesy of BMW OF NORTH AMERICA, INC.
NOTE: TECHNICAL INFORMATION 
Collect and dispose of emerging fluids. Observe country-specific waste disposal regulations.
G12700736Courtesy of BMW OF NORTH AMERICA, INC.
Fig 2: Cylinder Head Cover Screws Loosening Sequence
G12700738Courtesy of BMW OF NORTH AMERICA, INC.