BMW X5: Replacing Both Timing Chains (N62/N62TU)
Special tools required:
- 11 2 001
- 11 2 002
- 11 2 003
- 11 2 007
Necessary preliminary tasks:
- Remove lower timing case cover.
Remove timing chain (1).
Remove timing chain (5).
Release screws (7).
Remove guide rails (3 and 6).
Remove tensioning rails (2 and 4).
Installation:
Maintain tension of timing chains when installing timing case cover.
Observe sparking protection on timing case cover.
Make sure timing chain (1) is correctly installed when placing it in guide rail (3).
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Fig. 327: Identifying Timing Chains, Screws And Guide Rails
Attach special tools 11 2 001 and 11 2 002 to crankshaft.
Insert special tool 11 2 007 and remove sprocket wheel with special tool 11 2 003.
Installation:
Check sprocket wheels for wear, replace if necessary.
Heat sprocket wheel to 60ºC.
WARNING: Burning hazard! Wear gloves.
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Fig. 328: Identifying Special Tool (11 2 007), (11 2 001), (11 2 003)
Assemble engine.
READ NEXT:
Checking Camshaft Timing On Left Side (N62/N62TU)
Special tools required:
11 9 190
11 9 461
11 9 462
(cylinder bank 5 to 8)
Necessary preliminary tasks:
Remove servomotor for left eccentric shaft.
Remove left cylinder head cover.
Remove all
Checking Camshaft Timing On Right Side (N62/N62TU)
Special tools required:
11 9 190
11 9 461
11 9 462
(cylinder bank 1 to 4)
Necessary preliminary tasks:
Remove servomotor from right eccentric shaft.
Remove right cylinder head cover.
Remove
Adjusting Camshaft Timing On Left Side (N62/N62TU)
Special tools required:
11 9 190
11 9 460
11 9 461
11 9 462
11 9 463
(cylinder bank 5 to 8)
Necessary preliminary tasks:
Check camshaft timing on left side.
Remove left timing case cover.
SEE MORE:
Replacing Lumbar Cushion On Front Left Or Right Seat
Special tools required:
52 0 050.
Necessary preliminary tasks:
Remove rear panel on front seat backrest.
Fig. 43: Identifying Backrest Cover
Detach backrest cover (1) at bottom from backrest frame.
Remove valve housing.
Disconnect air hoses (2) from valve housing.
NOTE: Heat air hoses gently
Ignition Management
Most of the ignition system components have remained the same for all NG6
engines for 2007. There are some
minor changes to the ignition coils that apply to all versions. The coils have
been optimized for more durability.
Spark Plugs
The spark plugs for the N51 and N52KP remain the same as N52. Ho
