Instruction. After installing the camshaft, the engine must not be started for approximately 30 minutes. Hydraulic tappets must be deposited (otherwise the valves will come into contact with the pistons). After working on the valve train, rotate the engine by hand at least 2 revolutions to make sure that no valve is in contact with the piston. Gaskets and cuffs must be replaced. All seating and running surfaces must be lubricated prior to installation.
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1. 20 Nm + turn 90°, replace, follow sequence when loosening and tightening
2. Balancer axis, follow the sequence when loosening and tightening
3. Cylinder head bolt. Replace, follow the sequence when loosening and tightening, install washers in the cylinder head before installation
4. Washer for cylinder head bolts
5. Hydraulic pusher, check. Do not swap (note when removing), lay the working surface down, before installing, check the axial displacement of the camshaft, lubricate the working surface with oil
6. Valve cotters
7. Valve spring plate
S. Outer valve spring, remove and install with cylinder head removed using valve spring compressor -20379-
9. Internal valve spring, remove and install with cylinder head removed using valve spring compressor tool -203710-
10. Oil seal, replacement
11. Valve guide, check
12. Pump nozzle
13. cylinder head
14. Cuff, replacement
15. Valves, check, are not subject to processing, only grinding is allowed
16. Bearing shell, observe installation position. Do not interchange used bearing shells (note when removing), monitor the correct fit of the retaining tabs in the bearing caps and cylinder head
17. Camshaft, radial runout measured with Piastigage measuring strips, radial runout limit: 0.08 mm, runout: max. 0.01 mm, axial displacement check
18. Bearing cap (bearing cap 4 is marked as bearing cap "5"), seal covers 1 and 4 with sealant
19. 8 Nm + tighten 1/4 turn, replace
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