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Home >> BMW >> 2021 >> 840i 2D Convertible >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> Crankshaft Seal & Timing Case Cover -- Repair (G14, G15, & G16) >> 11 14 Crankshaft Seal, Timing Case Cover >> 11 14 612 Removing and installing/sealing or replacing lower timing case cover (M850i xDrive coupe/convertible/Gran Coupe sedan) >> Remove timing case cover, bottom

Remove timing case cover, bottom

Precondition 

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.
NOTE: TECHNICAL INFORMATION 
Collect and dispose of emerging fluids. Observe country-specific waste disposal regulations.

Preliminary work 

G14253100Courtesy of BMW OF NORTH AMERICA, INC.

Unscrew the screw connection 1 on the timing case cover in front 

Fig 1: Carrier Plate Screws Loosening Sequence
G14240096Courtesy of BMW OF NORTH AMERICA, INC.

Release the screw connection 2 on the front timing case cover 

Fig 2: Front Timing Case Cover Screws Loosening Sequence
G14240097Courtesy of BMW OF NORTH AMERICA, INC.

Release the screw connection 3 on the timing case cover in front 

Fig 3: Timing Case Cover Screws Loosening Sequence
G14240098Courtesy of BMW OF NORTH AMERICA, INC.