LEMON Manuals: Even more car manuals for everyone
Home >> BMW >> 2021 >> M5 Competition >> Repair and Diagnosis >> External Pages >> Different car >> Section 202 (Fuel System -- Repair M4 (G82 & G83)) >> 13 51 High-Pressure Pump >> 13 51 059 Removing and installing both high pressure pumps (M4 2021-2023) >> Removing both high pressure pumps

Removing both high pressure pumps

WARNING: This page is about a different car, the 2025 BMW M4, 2024 BMW M4, 2023 BMW M4, 2022 BMW M4, and 2021 BMW M4. However, it is still accessible from the selected car via links, so may be relevant.
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.
G15297265Courtesy 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.
G15297275Courtesy of BMW OF NORTH AMERICA, INC.