13 53 170 Removing and installing/replacing pressure lines to the injectors (N47 D16/20 K/U/O/T 1))
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Special tools required:
IMPORTANT:
When working on the oil, coolant or fuel circuit, you must protect the alternator against contamination.
Cover alternator with suitable materials.
Failure to comply with this procedure may result in an alternator malfunction.
Cover alternator with suitable materials.
Failure to comply with this procedure may result in an alternator malfunction.
IMPORTANT:
After the engine has stopped, wait at least 1 minute before releasing the high pressure lines.
After disconnecting the pressure lines, it is absolutely essential to seal the injectors and the high-pressure accumulator with protective caps.
Do not mix up new pressure lines.
After disconnecting the pressure lines, it is absolutely essential to seal the injectors and the high-pressure accumulator with protective caps.
Do not mix up new pressure lines.
Necessary preliminary tasks:
- Read fault memory.
- Switch off ignition.
- Remove ACOUSTIC COVER
- Remove REAR ACOUSTIC COVER AND SOUND INSULATION ON INJECTOR .
Recycling:
Catch and dispose of escaping fuel.
Observe country-specific waste disposal regulations.
Release all union nuts of the pressure lines with special tool 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 injector 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 injector and pressure accumulator!
Installing pressure lines
IMPORTANT:
Risk of injector breakage! Observe tightening torque 13 53 2AZ
without fail.
All pressure lines may only be reused 3 times; after the 3rd time, they must be replaced.
All pressure lines may only be reused 3 times; after the 3rd time, they must be replaced.
- 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 .
- Check all components of common rail system for tightness.
Reassemble the vehicle.
Bleed fuel system via BMW diagnosis system.
Check fuel system for tightness.