Contents: Removal ⇓ Installation ⇓
Removal
Disconnect the cable from the negative battery terminal.
Remove the cylinder head cover.
Figure 3.8. Sequence of unscrewing the valve drive mechanism mounting bolts
Loosen the valve rocker arm shaft mounting bolts in the sequence shown in the figure 3.8. Loosen the bolts gradually, turning them at a small angle.
After loosening the bolts, remove them and place them in a box with numbered compartments so that you can later install each bolt in its original place.
Remove the camshaft cover assembly with the shafts and valve rocker arms.
If it becomes necessary to disassemble the shafts with rocker arms, mark the parts so that you can then install them in their original position. Rocker arms and rocker shafts are not interchangeable.
Installation
Thoroughly clean the mating surfaces of the camshaft cover and cylinder head from any remaining sealant.
If the mechanism was disassembled, then before installation, generously lubricate the shaft assembly with the cover and rocker arms with clean engine oil.
Figure 3.9. Places (shaded) applying sealant before installing the valve drive mechanism
Apply a layer of sealant to the mating surfaces of the camshaft cover and cylinder head as shown in the figure 3.9.
Install the valve drive mechanism, hand tighten the mounting bolts, replacing each bolt in its original location.
Figure 3.10. Sequence of tightening the valve drive mechanism mounting bolts
Tighten the bolts to the specified torque in the sequence shown in the figure 3.10. Tighten the bolts gradually.
Check the clearances between the valves and rocker arms and adjust them if necessary.
Install the cylinder head cover and connect the cable to the negative battery terminal.