Blocking the engine in the TDC firing position
WARNING: This page is about a different car, the 2025 BMW M4, 2024 BMW M4, 2023 BMW M4, 2022 BMW M4, and 2021 BMW M4. However, it is still accessible from the selected car via links, so may be relevant.
- Loosen clamp (1) .
- Feed out and remove the sealing cap (2) .
NOTE:
RISK OF DAMAGE
Damage to the engine.
If the engine is manually rotated in the wrong direction of rotation, the engine can be damaged.
Damage to the engine.
If the engine is manually rotated in the wrong direction of rotation, the engine can be damaged.
- Only rotate the engine manually in the correct direction of rotation: a) clockwise when looking at the damper, or b) counterclockwise when looking at the chain drive. b) applies only if the timing chain is installed in the rear.
- Turn the engine in the arrow direction to the TDC firing position of cylinder 1 using special tool 0 493 380 (11 6 480).
- Vehicles with automatic transmission:
Dimension (X) = 66 mm
Special tool 2 288 380 must be inserted into the dowel hole up to dimension (X) .
- Vehicles with automatic transmission:
The special tool 2 288 380 is incorrectly positioned.
TDC firing position of cylinder 1 not achieved.
- Vehicles with automatic transmission:
The special tool 2 288 380 is correctly positioned.
Engine is in TDC firing position of cylinder 1.
- Vehicles with manual gearbox:
Dimension (X) = 61 mm
Special tool 2 288 380 must be inserted into the dowel hole up to dimension (X) .
- Vehicles with manual gearbox:
Special tool 2 288 380 incorrectly positioned.
TDC firing position of cylinder 1 not achieved.
- Vehicles with manual gearbox:
Special tool 2 288 380 correctly positioned.
Engine is in the TDC firing position of cylinder 1.
NOTE:
TECHNICAL INFORMATION
Alternative to the new special tool 2 471 127 , the already present special tool 2 456 372 can be used in modified form.
Information on modification can be found in the additional information.
The modified special tool is upward compatible.
Alternative to the new special tool 2 471 127 , the already present special tool 2 456 372 can be used in modified form.
Information on modification can be found in the additional information.
The modified special tool is upward compatible.
- Keep set of special tools 2 471 127 at hand:
| Number | Description |
|---|---|
| 1 | Basic carrier |
| 2 | Setting gauge for adjusting the intake camshaft |
| 3 | Setting gauge for adjusting the exhaust camshaft |
| 4 | Screws for connecting the basic carrier to the cylinder head |
| 5 | Screws for connecting the gauge to the basic carrier |
- Provide test gauges from the set of special tools 2 358 122:
| Number | Description |
|---|---|
| 1 | Test gauges for fixing in place the intake camshaft |
| 2 | Test gauges for fixing in place the exhaust camshaft |
- Make sure that the marks (1)
on the intake camshaft (E)
and the exhaust camshaft (A)
can be read from above.
- Ensure that the cam (1)
on the exhaust camshaft on cylinder 1 points to the inside right at a slight angle.
- Ensure that the cam (1) on the intake camshaft on cylinder 1 points to the inside left at an angle.
- Ensure that the flattened areas (1)
on the intake camshaft and the exhaust camshaft point upward.
- Position the basic carrier (1)
from the set of special tools 2 471 127
on the cylinder head.
- Tighten the screws (1) from the set of special tools 2 471 127 on the basic carrier (2).
TIGHTENING TORQUE SPECIFICATIONS
| Basic carrier to cylinder head | ||
| M6 | Tightening torque | 8 Nm |
- Position the test gauge (1) from the set of special tools 2 358 122 between the intake camshaft and the basic carrier from the set of special tools 2 471 127 .
- Position the test gauge (2) from the set of special tools 2 358 122 between the exhaust camshaft and the basic carrier from the set of special tools 2 471 127 .
- Tighten screws (arrows).
TIGHTENING TORQUE SPECIFICATIONS
| Test gauge to basic carrier | ||
| M6 | Tightening torque | 8 Nm |