Instructions. After installing the camshaft, the engine must not be started for approximately 30 minutes. The hydraulic tappets must be settled (otherwise the valves will touch the pistons). After working on the valve mechanism, turn the engine by hand at least 2 revolutions to make sure that none of the valves are in contact with the piston. Lubricate the bearing and working surfaces with oil see.
Valve mechanism:
1. Bolt, Replace. Follow the sequence when loosening and tightening the bolts, tighten further 20 Nm + 90°
2. Rocker arm axle. Observe the sequence when loosening and tightening the bolts
3. Bolt. Replace, observe the sequence when loosening and tightening the bolts, before installation insert washers "pos. 4" into the cylinder head
4. Washers for cylinder head bolts. Install in the cylinder head before installing the bearing caps
5. Hydraulic tappet. Check, do not mix up places (mark), fold with the working surface down, check the axial clearance of the camshaft before installation, lubricate the working surface with oil
6. Valve crackers
7. Valve spring plate
8. Outer valve spring. Remove and install with cylinder head installed or remove and install with cylinder head removed using valve spring puller
9. Inner valve spring. Remove and install with cylinder head installed, or remove and install with cylinder head removed using valve spring puller "203710"
10. Oil seal. Replace
I. Valve guide. Check
12. Pump-injector module
13. Cylinder head
14. Sealing cuff. Replace
15. Valves. Check. Valve dimensions cannot be modified, only lapping is allowed
16. Bearing shell. Take into account the installation position. Do not interchange previously used bearing shells (when removing, mark), check the correct position of the locking tabs in the bearing caps and cylinder head
17. Camshaft. Check the radial clearance using Plastigage strips. Radial clearance wear limit: 0.11 mm, runout: max. 0.20 mm
18. Bearing cover. Bearing cover 4 is marked as bearing cover "5". Seal bearing covers 1 and 4 with sealant
19. Bolt. Replace, tighten 8 Nm + 90°