Special tools
- Camshaft locking tool – BMW No.11 9 463.
- Crankshaft locking tool 1 – BMW No.11 9 451.
- Crankshaft locking tool 2 – BMW No.11 9 452.
- Crankshaft sprocket puller – BMW No.11 2 001/002/003/007.
- Exhaust camshaft alignment tool – BMW No.11 9 462.
- Inlet camshaft alignment tool – BMW No.11 9 461.
- Crankshaft pulley alignment tool – BMW No.11 9 190.
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:
- Engine removal.
- Cylinder head(s) removal.
- Flywheel removal.
- 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.
- Install crankshaft pulley alignment tool [1] . Tool No.11 9 190.
- Ensure camshaft lobes are positioned as shown:
- N62: No.5 cylinder [2] .
- N73: No.7 cylinder [2] .
- Ensure camshaft lobes for No.1 cylinder are positioned as shown [3] .
- If not, remove crankshaft pulley alignment tool and turn crankshaft pulley 360°.
NOTE: Ensure inlet camshafts locked in ‘fully advanced’ position and exhaust camshafts locked in ‘fully retarded’ position [4] .
- Camshaft rotation possible using spanner on hexagon [5] .
- Install alignment tool to LH inlet camshaft [6] . Tool No.11 9 461.
- Valve timing correct when alignment tool abuts cylinder head or is raised up to a maximum of 0,5 mm on exhaust side.
- Install alignment tool to LH exhaust camshaft [7] . Tool No.11 9 462.
- Valve timing correct when alignment tool abuts cylinder head or is raised up to a maximum of 0,5 mm on exhaust side.
- Repeat valve timing checking procedure for RH cylinder head.
- Align camshafts as follows:
- Slacken bolt on each LH camshaft adjuster and then re-tighten by hand [8] .
NOTE: Camshaft rotation can be prevented using spanner on hexagon.
- Install inlet camshaft alignment tool [6] . Tool No.11 9 461.
- Align LH inlet camshaft. Ensure inlet camshaft alignment tool abuts cylinder head.
- Lock LH inlet camshaft with camshaft locking tool [9] . Tool No.11 9 463.
- Tighten LH inlet camshaft adjuster bolt to 80 Nm [8] .
- Install exhaust camshaft alignment tool [7] . Tool No.11 9 462.
- Align LH exhaust camshaft. Ensure exhaust camshaft alignment tool abuts cylinder head.
- Lock LH exhaust camshaft with camshaft locking tool [9] . Tool No.11 9 463.
- Tighten LH exhaust camshaft adjuster bolt to 80 Nm [8] .
- Repeat adjustment procedure for RH cylinder head.
- Remove camshaft locking tool and camshaft alignment tools [6] , [7] & [9] .
- Remove crankshaft pulley alignment tool [1] . Tool No.11 9 190.
- Turn crankshaft two turns clockwise. Check valve timing.
- Bolt of camshaft adjusters MUST only be used once [8] .
NOTE: Crankshaft pulley central bolt MUST only be used once.
- Tighten crankshaft pulley central bolt to 100 Nm + 60° + 60° + 60° [10] .