Installing pressure line
WARNING: This page is about a different car, the 2010 BMW X6, 2009 BMW X6, and 2008 BMW X6. However, it is still accessible from the selected car via links, so may be relevant.
Installation of pressure rail is described separately from removal.
Same procedure for all pressure lines.
Copper seals that may be fitted (1) are no longer needed and must be removed.
If using the pressure line, apply a light coating of gear oil to the thread. New pressure lines are already coated.
IMPORTANT:
Connect pressure line (1) without tension only.
To ensure distortion-free installation of the pressure line and to avoid damaging the thread, it must be possible for both nuts to be screwed on easily by hand!
If the nuts cannot be easily screwed on by hand, the injector must be turned into the installation position!
To ensure distortion-free installation of the pressure line and to avoid damaging the thread, it must be possible for both nuts to be screwed on easily by hand!
If the nuts cannot be easily screwed on by hand, the injector must be turned into the installation position!
NOTE:
Description of "Turning injector into installation position" in the following two work steps.
Only if injector has to be turned into installation position:
Only if injector has to be turned into installation position:
- Release bolt a few turns until holding-down element (1) is slackened.
- Turn injector (2) in direction of arrow until nuts on pressure line can be easily screwed on by hand.
- To do so, engage wrench on hexagon head of injector if necessary.
- Tighten nuts on pressure line hand-tight.
IMPORTANT:
Do not under any circumstances pull injector out of bore!
If the injector is pulled out of the bore hole, the PTFE sealing ring must be replaced! Replacing PTFE sealing ring, refer to 13 53 310 Removing and installing or replacing an injector (N54, N53) .
If the injector is pulled out of the bore hole, the PTFE sealing ring must be replaced! Replacing PTFE sealing ring, refer to 13 53 310 Removing and installing or replacing an injector (N54, N53) .
Tighten down screw for holding-down element (1).
Tightening torque 13 53 5AZ .
Adhere to tightening sequence:
- First tighten down nut (1) on injector.
- Then tighten down nut (2) on high-pressure rail.
When tightening nut (1) on injector, grip hexagon head of injector with wrench (3).
Tighten down nuts with special tool 37 1 151.
Tightening torque 13 53 8AZ .
Assemble engine.
Check fuel system for leaks.
Check function of DME.