13 53 170 Removing and installing/replacing pressure lines to the injectors (N57 D30O/T 1)
Special tools required:
IMPORTANT:
Risk of damage to injection system and pressure accumulator!
Observe tightening torque 13 53 2AZ without fail If the pressure lines are leaking after installation, they must be replaced. Do not retighten pressure lines with a higher tightening torque! Risk of damage to injection system and pressure accumulator!
When working on the fuel circuit, you must protect the alternator against dirt contamination.
Cover alternator with suitable materials.
Failure to comply with this procedure may result in an alternator malfunction.
After disconnecting the pressure lines, it is absolutely essential to seal the injectors and the high-pressure accumulator with protective caps. 32 1 270
Observe tightening torque 13 53 2AZ without fail If the pressure lines are leaking after installation, they must be replaced. Do not retighten pressure lines with a higher tightening torque! Risk of damage to injection system and pressure accumulator!
When working on the fuel circuit, you must protect the alternator against dirt contamination.
Cover alternator with suitable materials.
Failure to comply with this procedure may result in an alternator malfunction.
After disconnecting the pressure lines, it is absolutely essential to seal the injectors and the high-pressure accumulator with protective caps. 32 1 270
Necessary preliminary tasks:
- Read out the fault memory of the DDE control unit.
- Switch off ignition.
- Remove INTAKE SILENCER HOUSING .
- ACOUSTIC COVER , rear.
- Remove sound insulation on injectors.
Recycling:
Catch and dispose of escaping fuel.
Observe country-specific waste disposal regulations.
Release union nut (1) of pressure line with special tool 37 1 152 .
NOTE:
Reset special tool in good time to prevent bending of pressure lines.
Release all union nuts of the pressure lines with special tool (2) 37 1 152 .
NOTE:
Reset special tool in good time to prevent bending of pressure lines.
IMPORTANT:
Risk of damage to injection system and pressure accumulator!
Observe tightening torque 13 53 2AZ without fail! If the pressure lines are leaking after installation, they must be replaced. Do not retighten pressure lines with a higher tightening torque! Risk of damage to injection system and pressure accumulator!
Observe tightening torque 13 53 2AZ without fail! If the pressure lines are leaking after installation, they must be replaced. Do not retighten pressure lines with a higher tightening torque! Risk of damage to injection system and pressure accumulator!
Installing pressure lines .
- Insert pressure lines.
- Hand-tighten all union nuts on pressure lines.
- Tighten down union nuts on injectors to specified torque.
Tightening torque 13 53 2AZ .
- Tighten down union nuts on pressure accumulator to specified torque.
Tightening torque 13 53 2AZ .
Reassemble the vehicle.
Vent fuel system via BMW diagnosis system.
Check fuel system for tightness.