1353315 Removing and installing/replacing all injectors of fuel injection system (M57T2)
Necessary preliminary tasks
- Read out fault memories of DDE control units
- Switch off ignition
- Remove acoustic cover
- Detach LEAKAGE OIL LINE
- Remove ALL PRESSURE LINES
IMPORTANT:
It is essential to adhere to conditions of absolute cleanliness when working on the fuel system.
- Do not allow any dirt particles or foreign bodies to get into the system
- Use only fluff-free cloths
- Remove all traces of dirt before removing pipes or individual components
- Seal all fuel system openings with protective caps
NOTE:
Following description applies to all injectors:
Unlock plug (1) and remove.
Unscrew nuts.
Remove injector (2).
Unlock plug (1) and remove.
Unscrew nuts.
Remove injector (2).
Installation:
Tightening torque 13 53 4AZ .
Installation:
Replace sealing rings (1 and 2).
Replace gasket (3).
Apply a light coating of highly temperature-resistant grease to injector stem.
(BMW part number 83 23 0 441 070)
IMPORTANT:
Danger of breakage of pressure line on injector! Observe tightening torque without fail.
Tightening torque 13 53 1AZ .
Tightening torque 13 53 1AZ .
- Hand-tighten all union nuts on pressure lines.
- Tighten down union nuts on injectors and on pressure accumulator to specified torque.
- Inspect all components of Common Rail System for leaks.
NOTE:
In the case of piezo injectors, the seven-digit adjustment value must be stored in the control unit after an injector has been replaced.
Read off adjustment value (1) on new injector (2).
NOTE:
If injectors have been replaced, "Injector map adjustment" must be carried out:
- Connect DIS Tester
- Identify car
- Select "Function selection"
- Select "Service functions"
- Select "Digital Diesel Electronics (DDE)"
- Select "Injector adjustment"
- Select "Test schedule"
- Start Service functions with right arrow key.
NOTE:
Now clear the fault memory.