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Home >> BMW >> 2021 >> 840i 2D Convertible >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> Crankshaft -- Repair (G14, G15, & G16) >> 11 21 Crankshaft And Bearings >> 11 21 001 Replace crankshaft (840i coupe/convertible/Gran Coupe sedan) >> Removing crankshaft

Removing crankshaft

CAUTION: Component with heavy weight. 
Injury hazard! 
  • Note component's center of gravity.
  • Support component using a jack.
  • Secure component against falling off the jack.
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 

NOTE: RISK OF DAMAGE 
Engine damage caused by incorrectly installed bearing shells and bearing brackets. 
If the bearing shells and bearing brackets are installed incorrectly, then engine damage can occur. 
  • Always install all bearing shells and bearing brackets in the same position from which they were removed.
G12728448Courtesy of BMW OF NORTH AMERICA, INC.


CAUTION: Component with heavy weight. 
Injury hazard! 
  • Note component's center of gravity.
  • Support component using a jack.
  • Secure component against falling off the jack.
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 

NOTE: RISK OF DAMAGE 
Engine damage caused by incorrectly installed bearing shells and bearing brackets. 
If the bearing shells and bearing brackets are installed incorrectly, then engine damage can occur. 
  • Always install all bearing shells and bearing brackets in the same position from which they were removed.