Peugeot:: 405: Repair of a head of the block of cylinders

3.2.13.5. Repair of a head of the block of cylinders

Place of measurement of height of a head of the block of cylinders and sign of a repolished head

h – height of a head of the block of cylinders,
and – an arrangement of a sign of a repolished head

R – sign of a repolished head

The sizes of the directing plugs of valves

f, g, h, k, j – see subsection 3.2.1

Sizes of saddles of valves

a, b, c, d – see subsection 3.2.1

Comparison of nests of valves on early and late models

and – old type,
b – new type,

1 – nests of valves

PERFORMANCE ORDER

1. Remove a head of the block of cylinders.

2. Gradually release fastening of covers of bearings of the camshaft.

3. Uncover bearings, designating the direction of their fastening.

4. Remove the sealing ring which is on the end of the camshaft.

5. Remove the camshaft.

6. Designate and remove pushers of valves.

7. By means of a special clip take the valve together with their springs and arrange them one after another.

8. Take vortex cameras, beating out them through an opening for nozzles.

9. Clear a head of the block of cylinders. It is necessary to apply special cleaner "Decaploc 88" to cleaning of a surface of connection.

10. Check planeness of a surface of connection with the block of cylinders of the engine (the maximum not planeness of 0,07 mm).

11. In case of need it is necessary to pereshlifovat a head of the block of cylinders. For this purpose it is necessary to perform the following operations:
      – to pereshlifovat nests of valves so that to receive the necessary course;
      – to replace vortex cameras with vortex cameras of the repair sizes and to achieve necessary value of their vystupaniye;
      – under springs of valves establish the compensating laying 0,4 mm thick.

12. Check a condition of the directing plugs of valves. In case of need they should be replaced. Performance of this operation should be charged to the qualified specialist. Replacement of the directing plugs of valves demands obligatory regrinding or replacement of the corresponding saddles of valves.

13. Check a condition of saddles of valves. In case of need they should be pereshlifovat or replaced. Performance of this operation should be charged to the qualified specialist.

14. Check a condition of springs and the camshaft.

15. Check a vystupaniye of vortex cameras (0–0,03 mm).

16. In case of need it is necessary to achieve the necessary size processing of surfaces "x" and "from" vortex cameras (see rice. Comparison of nests of valves on early and late models).

17. Check facets of valves.

18. In case of need it is necessary to achieve the necessary sizes grinding of saddles of valves.

19. Grind in valves.

20. Install valves.

Prevention

If the head of the block of cylinders was a pereshlifovana, then it is necessary to establish the compensating laying 0,4 mm thick under springs of valves.

21. Establish on rods of valves of a plate 2,425 mm thick and check whether exceed plate plates of springs.

22. If plates do not exceed plates of springs, then it is necessary to soshlifovat the top surfaces of plates.

23. Establish pushers.

24. Oil camshaft bearings.

25. Install the camshaft by the sign "DIST" to the gas distribution drive.

26. Establish covers of bearings and gradually tighten them until 17,5 Nanometers.

27. Establish a head of the block of cylinders.