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Home >> BMW >> 2021 >> X4 M Base >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Fuel System -- Repair (F98) >> 13 51 Fuel Injection Pump >> 13 51 057 Removing and installing high pressure pump (cylinders 1-3) >> Removing the high pressure pump of cylinders 1 to 3

Removing the high pressure pump of cylinders 1 to 3

NOTE: TECHNICAL INFORMATION 
When the engine is stopped after the completion of trip, it may be necessary to run the electric fan. In rare cases, operation of the electric fan can take up to 11 minutes. This protects the components. In this case, replacing the electric fan is not necessary.

Preliminary work 

NOTE: RISK OF DAMAGE 
Contaminant or foreign body. 
Contamination can result in malfunctions, loss of function or leaks. 
  • Adhere to the utmost cleanliness.
  • Protect components from contamination e.g. by covering.
  • Close off line connections with seal plugs.
NOTE: TECHNICAL INFORMATION 
Collect and dispose of emerging fluids. Observe country-specific waste disposal regulations.
NOTE: RISK OF DAMAGE 
The high pressure pump is preloaded by the piston spring and must be removed by alternately unscrewing the screws without tilting.
Before installing the high pressure pump, the cam of the high pressure pump drive must be turned to bottom dead center.
If necessary, turn the engine in the direction of engine rotation on the central bolt of the crankshaft, otherwise there is a risk of piston breakage of the high pressure pump.
G14927573Courtesy of BMW OF NORTH AMERICA, INC.