REP-TAT-P-1131-05 Checking camshaft timing (manual transmission)

NOTE: RISK OF DAMAGE
Damage to the engine.
The engine may be damaged if it is manually rotated in the wrong direction.

Rotate the engine in the correct direction of rotation by hand only: a) Clockwise, facing the vibration damper or b) counterclockwise, facing the chain drive. b) only applies if the rear timing chain is installed.

Courtesy of BMW OF NORTH AMERICA, INC.

With the special tool 0 493 380 (11 6 480) , turn the engine to the TDC firing position of cylinder 1.
Block the crankshaft in the TDC firing position of cylinder 1 (manual transmission).
On vehicles with manual transmission: Insert the special tool up to dimension (X) in the dowel hole.
Dimension (X) = 56 mm

Courtesy of BMW OF NORTH AMERICA, INC.
Vehicles with manual gearbox:
Special tool 2 288 380 has been correctly positioned.

Engine is in TDC firing position of cylinder 1.

Courtesy of BMW OF NORTH AMERICA, INC.
Vehicles with manual gearbox:
Special tool 2 288 380 incorrectly positioned.

TDC firing position of cylinder 1 not achieved.

Courtesy of BMW OF NORTH AMERICA, INC.
Vehicles with manual gearbox:
Open sealing cap (1) from the oil sump.

Courtesy of BMW OF NORTH AMERICA, INC.
Vehicles with manual gearbox:
Use the special tool 2 288 380 to block the crankshaft in the TDC firing position of cylinder 1.

NOTE: If the crankshaft is blocked properly, it is not possible to turn the engine forwards or backwards on the vibration damper!

Courtesy of BMW OF NORTH AMERICA, INC.

Check

Check if mark (1) of the exhaust camshaft and mark (2) of the intake camshaft can be read from the top.

Courtesy of BMW OF NORTH AMERICA, INC.

Result

» Marks (1) and (2) cannot be read from the top.

Measure

Check

Check whether the middle one of the 3 flattened areas (1) on both camshafts points upwards. The special tool 2 358 122 can also be mounted if the camshafts are twisted by 180 degrees (middle flat area points towards the bottom).

Courtesy of BMW OF NORTH AMERICA, INC.

Result

» The middle one of the 3 flattened areas (1) does not point upwards.

Measure

Turn camshafts to the correct position so that the middle one of the 3 flattened areas (1) on both camshafts points upwards.

Check if the cams of the exhaust camshaft (1) and the intake camshaft (2) on the first cylinder are positioned as shown.

Courtesy of BMW OF NORTH AMERICA, INC.

Keep set of special tools 2 358 122 at hand:

Courtesy of BMW OF NORTH AMERICA, INC.

Number	Description
1	Basic carrier
2	Basic carrier screws on cylinder head
3	Gauge to fix exhaust camshaft
4	Gauge to fix intake camshaft
5	Screw gauge on basic carrier

Secure the basic carrier (1) of the special tool 2 358 122 with the screws (2) the cylinder head.
Position gauge (3) with the recess on the exhaust camshaft and fix with the screws (5) the basic carrier (1).

NOTE: TECHNICAL INFORMATION
If special tool cannot be mounted, the timing must be readjusted.

Courtesy of BMW OF NORTH AMERICA, INC.

Position gauge (4) with the recess on the intake camshaft and fix with the screws (5) on the basic carrier (1).