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Home >> BMW >> 2021 >> 840i 2D Convertible >> Repair and Diagnosis >> External Pages >> Different car >> Section 206 (Crankshaft Seal & Timing Case Cover -- Repair (G02)) >> 11 14 Crankshaft Seal, Timing Case Cover >> 11 14 005 Replacing front crankshaft seal (X4 M40i 2019) >> Replacing the front crankshaft seal

Replacing the front crankshaft seal

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WARNING: Hot surfaces. 
Risk of burning! 
  • Perform all work only on components that have cooled down.

Preliminary work 

G11644920Courtesy of BMW OF NORTH AMERICA, INC.
NOTE: RISK OF DAMAGE 
Careless handling of tools and sharp-edged components. 
Scratches, surface damage. 
  • Protect working area.
  • Handle tools and components carefully.
G11644921Courtesy of BMW OF NORTH AMERICA, INC.
G12700838Courtesy of BMW OF NORTH AMERICA, INC.
NOTE: RISK OF DAMAGE 
Radial shaft seal damage. 
Taping the sealing lip (inner) and applying oil to the radial shaft seal will lead to its destruction. 
  • Do not tap the sealing lip (inner) of the radial shaft seal.
  • Do not apply oil to the radial shaft seal.
  • Install the radial shaft seal dry.
G12700839Courtesy of BMW OF NORTH AMERICA, INC.
G12700840Courtesy of BMW OF NORTH AMERICA, INC.
G12700841Courtesy of BMW OF NORTH AMERICA, INC.

Follow-up work