BMW X5: Removing And Installing/Replacing Chain Module For Oil Pump/Vacuum Pump (N52K)
Special tools required:
- 00 9 140
- 11 0 290
- 11 0 300
- 11 4 120
- 11 4 280
- 11 4 360
- 11 4 362
- 11 4 440
- 11 5 200
- 11 9 280
IMPORTANT: Aluminium-magnesium materials.
No steel screws/bolts may be used due to the threat of electrochemical corrosion.
A magnesium crankcase requires aluminium screws/bolts exclusively.
Aluminium screws/bolts must be replaced each time they are released.
The end faces of aluminium screws/bolts are painted blue for the purposes of reliable identification.
Jointing torque and angle of rotation must be observed without fail (risk of damage).
Necessary preliminary tasks:
- Remove cylinder head cover
- Remove oil sump
- Remove drive belt
- Remove drive belt tensioner
- Remove vibration damper
- Remove sealing cover for vacuum pump
Procedure on installed engine:
Turn sprocket wheel (3) with central bolt at crankshaft into position until special tool 11 0 290 can be secured.
Simultaneously secure special tool 11 0 290 to sprocket wheel (3) and special tool 11 4 362.
Release screw (2) for sprocket wheel (3).
Tightening torque: 11 66 2AZ.
Fig. 250: Special Tool (11 4 362) And (11 0 290), Screw And Sprocket Wheel
Press timing chain with chain tensioner (1) in direction of arrow.
Disconnect timing chain with special tool 11 4 120.
Feed out sprocket wheel (3) at hexagon head (4) of vacuum pump.
Installation:
If the chain module is replaced, a mounting bar (2) is already pre-installed.
Fig. 251: Pressing Piston With Special Tools (11 6 261)
NOTE: To release bolt (1), insert a 6 mm drill bit between sprocket wheel and oil pump housing.
Release screw (1) for sprocket wheel.
Tightening torque: 11 41 6AZ.
Release screws (2) for chain module.
Tightening torque: 11 41 5AZ.
Installation:
Replace aluminium screws.
Fig. 252: Bolt And Screw
Secure crankshaft and camshaft with special tools 11 0 300 and 11 4 280.
IMPORTANT: Do not remove special tools 11 0 300 and 11 4 280 to release central bolt (1).
Employ a second person for gripping when releasing central bolt (1).
Screw special tool 11 9 280 onto hub of vibration damper.
Release central bolt (1).
Tightening torque: 11 21 1AZ.
Fig. 253: Central Bolt With Special Tool (11 9 280)
Installation:
Replace central bolt (1).
Remove hub (2) towards front.
Installation:
Replace crankshaft radial seal at front.
Fig. 254: Hub
Open screw plug on bedplate.
Tightening torque: 11 11 8AZ.
Installation:
Replace aluminium screws.
Release screw for chain module (1).
Tightening torque: 11 41 4AZ.
Installation:
Replace aluminium screws.
Remove chain module (1) in direction of arrow.
Fig. 255: Removing Chain Module
IMPORTANT: Note installation direction of sprocket wheel (2).
Collar (see arrow) on sprocket wheel (2) points to engine.
Incorrect assembly will result in engine damage.
Fig. 256: Collar On Sprocket Wheel
Procedure on removed engine:
NOTE: Engine is mounted on special tool 11 4 440.
Release screw (1) for sprocket wheel.
Tightening torque: 11 66 2AZ.
Release screw (2) for sprocket wheel.
Tightening torque: 11 41 6AZ.
Release central bolt (3).
Tightening torque: 11 21 1AZ.
Fig. 257: Releasing Central Bolt
Installation:
Mark central bolt (3) with a colored dot.
Replace central bolt (3).
Remove hub (4) towards front.
All:
Install hub with new central bolt.
Tighten down special tool 11 5 200 with screws (1) to hub.
Do not remove special tools 11 0 300 and 11 4 280.
Fig. 258: Screws With Special Tool (11 5 200)
Remove tensioner for drive belt.
Screw in special tool 11 4 362 from special tool kit 11 4 360.
Mount special tool 11 9 280 on 11 5 200.
Support special tool 11 9 280 on special tool 11 4 362.
Special tool 11 0 300 secures crankshaft.
Tighten central bolt to jointing torque.
Tightening torque: 11 21 1AZ.
Mark central bolt and hub with paint.
Fig. 259: Special Tools (11 9 280), (11 0 300), (11 4 360) And (11 5 200)
Mark special tools with colored line (1).
See picture.
IMPORTANT: Do not remove the special tool while tightening the central bolt to torsion angle.
Risk of damage!
If necessary, tighten central bolt to torsion angle with special tool 00 9 140.
Tightening torque: 11 21 1AZ.
Fig. 260: Marking Special Tools With Colored Line
Installation:
Replace crankshaft radial seal at front.
Assemble engine.
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