Install the cylinder head bolts.
Note. The cylinder head bolts are tightened in two stages. If any cylinder head bolt is broken or deformed, replace it.
Pic. 2.260. The order of loosening the bolts with an internal hexagon on each cylinder head
Apply a light coat of engine oil to the threads and under the heads of the mounting bolts. Install the washers on the mounting bolts. Install and evenly tighten ten cylinder head bolts in several passes to 54 Nm (see fig. 2.260).
If any bolt is not tightened to the correct torque, replace the bolt. Apply paint marks to the front of the cylinder head bolts. Tighten the cylinder head bolts 90°in the above sequence. Check that the inked mark is 90°from its original position.
Install the cylinder head bolts with hexagon socket head. Apply a light coat of engine oil to the threads and under the heads of the mounting bolts. Install and tighten the cylinder head bolts with an 8 mm Allen key to a tightening torque of 18 Nm.