F2B ENGINE 89 T RAKKER E URO 4/5 PRINT603.93. 641/A Print 603.93.641/A Base q November 2006 Revi - June 2007 Figure 164 45266 Make sure that pistons 1-6 are exactly at the TDC Place the gasket (2) on the block. Fit the cylinder head (1) and tighten screws as shown in figs. 166, 167 and 168. NOTE Use new screws whenever removing the cylinder head. Figure 165 44900 Diagram showing the cylinder head fixing screws tightening order Figure 166 45267 - Preliminary tightening by means of a torque wrench (1): 1st phase: 50 Nm (5 kgm: 2nd phase:
100 Nm (10 kgm) OTE Before reusing the screws (2), measure the diameter of the thread; it must be no less than 11.4 mm; if it is, change the screw. Lubricate the thread of the screws with engine oil before assembly. Figure 162 45255 y means of centering ring 99396033 (2), check the exact over position (1),otherwiseact as necessary and tighten the crews. Figure 163 45256 it the sealing gasket (1), install the fitting tool 99346245 (2) nd drive the sealing gasket (1) by screwing nut (3).