LEMON Manuals: Even more car manuals for everyone
Home >> BMW >> 2021 >> M3 Base, Automatic Trans >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Fuel System -- Repair M3 (G80) >> 13 51 Fuel Injection Pump >> 13 51 059 Removing and installing both high pressure pumps (M3 base, M3 Competition, M3 Competition M xDrive, M3 CS) >> Removing both high pressure pumps

Removing both high pressure pumps

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 last up to 11 min. This protects the components. In this case, replacing the electric fan will not remedy the problem!

Preliminary work 

Removing the high pressure pump for cylinders 1 to 3 

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: TECHNICAL INFORMATION 
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
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.

Removing the high pressure pump for cylinders 4 to 6 

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: TECHNICAL INFORMATION 
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
G14902527Courtesy of BMW OF NORTH AMERICA, INC.