BMW X5: Injection Nozzle And Lines
REPLACING COMPLETE INJECTION PIPE (N52/ N52K)
Special tools required:
- 13 5 281
Necessary preliminary tasks:
- Read out fault memory of DME control unit
- Switch off ignition
- Remove clean air pipe
- Remove ignition coil cover
Recycling
Fuel escapes when fuel line is detached. Catch and dispose of escaping fuel.
Observe country-specific waste-disposal regulations.
N52K only:
Unclip plug connection (1) from holder (2) and disconnect.
Unclip wiring harnesses from holder (2) and connector strip (3).
Disconnect holder (2) from injection pipe.
Remove protective cap from compressed air valve.
Connect compressed air line (1) to compressed air valve.
Blow fuel back into tank with a short blast of compressed air (max. 3 bar).
Unlock and detach fuel line (1).
Detach connector strip (2) in direction of arrow. Release screws.
Remove injection pipe (3).
Seal fuel hose with special tool 13 5 281.
Lever out retainers (1).
Pull fuel injectors out of injection pipe.
Installation:
Replace sealing rings on fuel injectors and coat with anti-friction rubber coating.
NOTE: Check stored fault messages.
Now clear the fault memory.
REPLACING, SEALING FUEL HOSES
Special tools required:
- 13 5 281
WARNING: Fuel in fuel lines is under pressure (approx. 3-5 bar).
Recycling
Catch and dispose of escaping fuel.
Observe country-specific waste-disposal regulations.
Version with compressed-air connection:
Blow fuel back into tank with a short blast of compressed air (max. 3 bar) at compressed air connection (1).
For version with fuel hoses with integrated unlocking device:
Press fuel hose (1) downwards and keep pressed.
Press unlocking ring (2) upwards, keep pressed and detach fuel hose (1).
Installation:
Check O-ring in fuel hose and sealing surfaces on fuel lines for damage; replace components if necessary.
Coat O-ring for assembly with anti-friction agent.
Remove fuel line.
Fuel hoses with quick-release couplings:
Seal fuel hoses (1&2) with special tool 13 5 281.
Installation:
Check O-ring in fuel hose and sealing surfaces on fuel lines for damage; replace components if necessary.
Coat O-ring for assembly with anti-friction agent.
REMOVING AND INSTALLING/REPLACING A FUEL INJECTOR (N52, N52K, N51)
This work step is described in the article Removing complete injection pipe.
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Throttle And Operation
REMOVING AND INSTALLING/SEALING THROTTLE VALVE ASSEMBLY (N52 /
N52K / N51 / N53)
Read and comply with notes on protection against electrostatic damage (ESD
protection).
Necessary preliminary tasks:
Sensor For Control Unit
REMOVING AND INSTALLING/REPLACING DIFFERENTIAL PRESSURE SENSOR
(N52 / N52K / N51)
Necessary preliminary tasks:
E90 / E91 / E92 / E93 / E87:
Remove lower section of microfilter housing.
E85 / E86 E
Intake Silencer
REMOVING AND INSTALLING/REPLACING INTAKE FILTER HOUSING (N52K)
Necessary preliminary tasks:
Switch off ignition
Lever out expansion rivets (1).
Press lock (2) and raise intake duct (3).
Detach int
SEE MORE:
Replacing Radial Seal For Drive Flange Of Front Differential
Special tools required:
23 0 020
31 5 130
33 1 150
Necessary preliminary tasks:
Remove reinforcement plate.
Mark position of nut with respect to shaft with punch marks (arrow).
Lever out lockplate (1) with a suitable tool.
Fig. 107: Locating Lockplate
IMPORTANT: Risk of damage!
Do not plac
Replacing Sealing Cover For Vacuum Pump (N52K)
Special tools required:
11 4 361
11 4 362
11 4 363
11 4 364
11 9 200
Necessary preliminary tasks:
Remove fan cowl with electric fan
Remove alternator drive belt
Remove drive belt tensioner
NOTE: The procedure is the same as for the crankshaft radial seal.
Expose removal openings on seal
