Special tools
- Camshaft alignment tool 1 – BMW No.11 4 281.
- Camshaft alignment tool 2 – BMW No.11 4 282.
- Camshaft alignment tool 3 – BMW No.11 4 283.
- Flywheel timing pin – BMW No.11 0 300.
- Sensor gear alignment tool – BMW No.11 4 290.
- Timing chain pre-tensioning tool – BMW No.11 9 340.
General precautions
- Disconnect battery earth lead.
- Remove spark plugs to ease turning engine.
- Turn engine in normal direction of rotation (unless otherwise stated).
- Observe tightening torques.
- If fitted: Mark position of crankshaft position (CKP) sensor before removal.
- Do NOT turn crankshaft via camshaft or other sprockets.
- Do NOT turn crankshaft or camshaft with timing chain removed.
Valve timing procedures
- Removal/installation of timing chain requires:
- Sump removal.
NOTE: Refer to Autodata Technical Data for tightening torques.
NOTE: Refer to Technical Data module for tightening torques.
- Engine at TDC on No.1 cylinder.
- Ensure part number on each camshaft is facing upwards [1] .
- Remove blanking plug from cylinder block.
- Insert flywheel timing pin [2] . Tool No.11 0 300.
NOTE: Engine should not turn if flywheel timing pin fitted correctly.
- Ensure camshaft alignment tools can be fitted [3] , [4] & [5] . Tool Nos.11 4 281/11 4 282/11 4 283.
- If not, adjust camshafts as follows:
- Slacken central bolt on each camshaft adjuster [6] .
- Remove tensioner assembly [7] .
NOTE: If chain tensioner is to be re-used it must be drained of oil. Compress plunger slowly twice.
- Ensure sensor gear locating holes at 9 o’clock position [8] .
- Install sensor gear alignment tool and secure to cylinder head [9] . Tool No.11 4 290.
- Install timing chain pre-tensioning tool [10] . Tool No.11 9 340.
- Screw in adjusting screw until in contact with guide rail.
- Pre-load timing chain with tensioning tool to 0,6 Nm [10] .
- Tighten central bolt on each camshaft adjuster [6] . Tightening torque: 20 Nm + 180°.
NOTE: Central bolt of camshaft adjusters MUST only be used once.
- Remove flywheel timing pin [2] .
- Remove sensor gear alignment tool [9] .
- Remove camshaft alignment tools [3] , [4] & [5] .
- Remove timing chain pre-tensioning tool [10] .
- Install tensioner assembly [7] . Tightening torque: 50 Nm.
- Turn crankshaft two turns clockwise.
- Ensure flywheel timing pin and camshaft alignment tools can be refitted [3] , [4] , [5] & [9] .
NOTE: Crankshaft pulley central bolt MUST only be used once.
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