Adjust the timing of the camshaft
WARNING: This page is about a different car, the 2023 BMW X5, 2022 BMW X5, 2021 BMW X5, 2020 BMW X5, and 2019 BMW X5. However, it is still accessible from the selected car via links, so may be relevant.
WARNING:
High-voltage system
.
The high-voltage system operates on the basis of hazardous, electrical voltage and high currents. Mortal hazard through electric shock!
The high-voltage system operates on the basis of hazardous, electrical voltage and high currents. Mortal hazard through electric shock!
- All work on the high-voltage system may only be carried out by specially trained and technically experienced personnel.
- For additional information see: SAFETY INSTRUCTIONS ON HANDLING HYBRID CARS .
- For additional information see: NOTES ON REPAIR OF HIGH-VOLTAGE BATTERY UNIT .
Preliminary work
- Refer to BLOCKING THE CRANKSHAFT IN HE TDC FIRING POSITION OF CYLINDER 1 .
- Refer to REMOVING COWL LOWER PART .
- Refer to REMOVING THE CENTER STRUT BRACE .
- Refer to REMOVING THE HOLDER OF THE POSITIVE BATTERY CABLE .
- Refer to REMOVING CHAIN TENSIONER .
Prerequisite
Crankshaft is disconnected and blocked.
Engine is in TDC firing position of cylinder 1.
- Get the set of special tools 2 456 372
ready.
Number Description 1 Basic carrier 2 Setting gauge 0.7° for adjusting the intake camshaft 3 Setting gauge 0.5° for adjusting the exhaust camshaft 4 Basic carrier screws on cylinder head 5 Screw gauge on basic carrier - Use the setting gauge 0.7° (1) from the special tool kit 2 456 372 to adjust the intake camshaft.
- Use the setting gauge 0.5° (2) from the special tool kit 2 456 372
to adjust the exhaust camshaft.
- To release the VANOS central valve (1), use the reversible ratchet (2) from the special tool 0 496 855
with the special tool 2 450 487
.
- Position the basic carrier (1) from the set of special tools 2 456 372
on the cylinder head.
- Tighten the screws (1) from special tool set 2 456 372 on the basic carrier (2).
TIGHTENING TORQUE SPECIFICATIONS
| Basic carrier to cylinder head | |
|---|---|
| M6 | Tightening torque 8 Nm |
- Position the setting gauge 0.7° (1) from the special tool kit 2 456 372 between the basic carrier (2) from the set of special tools 2 456 372 and the intake camshaft (3).
- If necessary, crank the engine at the crankshaft using special tool 0 493 380 (11 6 480) .
- Tighten the screws (4) from special tool set 2 456 372 .
TIGHTENING TORQUE SPECIFICATIONS
| Test gauge to basic carrier | |
|---|---|
| M6 | Tightening torque 8 Nm |
- Release the VANOS central valve (5) of the intake adjuster.
- Position the setting gauge 0.5° (1) from the special tool kit 2 456 372 between the basic carrier (2) from the set of special tools 2 456 372 and the exhaust camshaft (3).
- If necessary, crank the engine at the crankshaft using special tool 0 493 380 (11 6 480) .
- Tighten the screws (4) from special tool set 2 456 372 .
TIGHTENING TORQUE SPECIFICATIONS
| Test gauge to basic carrier | |
|---|---|
| M6 | Tightening torque 8 Nm |
- Release the VANOS central valve (5) of the exhaust camshaft adjuster.
- Make sure the flattened areas (1) on the intake camshaft and the exhaust camshaft are pointing upwards at an angle.
- Rotate the intake camshaft (E) and the exhaust camshaft (A) so that the marks (1) are legible from above.
- Make sure the cam (1) on the exhaust camshaft on cylinder 1
is pointing slightly to the inside right at an angle.
- Make sure the cam (1) on the intake camshaft on cylinder 1 is pointing leftwards at an angle.