Cylinder Head Assembly

Cylinder head





Tighten cylinder head in tightening sequence as follows:

Pretighten all bolts 40 Nm.

Then tighten all bolts 1/4 turn (90°) using a rigid wrench.

Finally tighten all bolts again 1/4 turn (90°) using a rigid wrench.

Checking cylinder head for distortion
Max. permissible distortion 0.1 mm


Camshaft Bearing Cap





Tighten bearing caps 2 and 4 of intake and exhaust camshafts using a cross-over sequence and tighten to 10 Nm (observe dowel sleeves).





Install both bearing caps on chain sprockets of intake and exhaust camshafts. Check camshafts for correct seat - arrow - and tighten bearing caps to 10 Nm (observe dowel sleeves).

Apply a thin coat of sealant D 454 300 A2 to shaded area of double bearing cap and tighten to 10 Nm (observe dowel sleeves).

Install other bearing caps and tighten to 10 Nm (observe dowel sleeves).


Camshaft pulley





Install camshaft pulley (narrow web shows outward - arrows - and TDC marking is visible) and tighten securing bolt to 65 Nm (use retainer 3036).