11.55 2 M6 x 60 M6 x 30 M6 x 30 1 M6 x 30 RS110930 Installing cylinder head • Fit camshaft chain sprocket in accordance with adjustment specification. • Install cylinder head gasket. • Lock clutch housing with special tool • Fit cylinder head/insert correctly positioned cam- BMW No. 11 5 640. shaft chain sprocket (1) and timing chain into • Tighten camshaft chain sprocket. X chain cavity. • Install valve gear support (2). Tightening torque: • Tighten cylinder head down. Camshaft sprocket retaining screw .............. 65 Nm e Caution:
• Insert the left-side camshaft sprocket with pin Install collar (arrow) of cylinder head nut towards cyl- into the camshaft and set the left cylinder to TDC inder head. on the ignition stroke. • Fit camshaft chain sprocket in accordance with X adjustment specification. Tightening torque/tightening order: • Tighten camshaft chain sprocket. 1. Tighten cylinder head nuts (oiled) crosswise • Install chain tensioner. 1.1 Tighten all nuts....................................... 20 Nm • Check that marks on camshaft sprockets are in 1.2 Tighten all nuts to correct angle .................. 90° accordance with adjustment specification. X 1.3 Tighten all nuts to correct angle .................. 90° 2.
M 10 bolt................................................ 40 Nm Tightening torque: 3. M 6 screw ................................................ 9 Nm Chain tensioner............................................ 32 Nm X Tightening torque: Take up slack after 1000 km (app. 600 miles) Tighten cylinder head nuts in a crosswise pattern 1. Unfasten one nut 2. Tighten one nut to initial value................. 20 Nm 3. Tighten nut to wrench angle...................... 180° 4. Unfasten/retighten M10 screw ................ 40 Nm