Citroen Xantia

1. Cock the parking brake, then поддомкратьте a front of the car and establish it on props. Remove the right forward wheel.
2. Working in front under the car, release clamps, turn out fixing bolts and remove a plastic cover from a wing podzor for the purpose of ensuring access to a bolt of a cogwheel of a cranked shaft. In case of need, for providing bigger free space, liberate hoses of system of cooling from clamps on the arm.
3. Now the engine can be turned for a bolt of a pulley of a cranked shaft by means of a suitable face natural a collar.
4. Uncover heads of cylinders (see. Removal and installation of a cover of a head of cylinders).

5. On a sheet of paper outline the scheme of an arrangement of cylinders, having numbered them in the corresponding order (considering as the first what is located from the party of the engine turned to transmission). Specify locations of each of valves with reduction of demanded value of size of a working gap (see item 10). Over designation of each of valves carry out two lines for the purpose of drawing on them really taking place gap (1) and sizes of necessary adjustment (2).
I\Inlet valve
Е — the Final valve
1 — the Measured gap
2 — the Difference between 1 and 3
3 — the Nominal gap
4 — Thickness of an original adjusting washer
5 — Thickness of a required new adjusting washer

6. Turn a cranked shaft so that the inlet valve of the first cylinder appeared is completely closed. The corresponding cam of a camshaft thus should be developed by a working ledge from a pusher.

7. Shchup of lezviyny type measure size of the gap which is taking place between the basis of a cam and a face surface of a pusher. Write down result of measurement over line (1) over designation of the corresponding valve on the scheme.

8. Repeat measurement for the remained seven valves, consistently turning a cranked shaft for the purpose of reduction them in a closed position (see item 7). Put results of measurements on the scheme.
9. Now define a difference between result of measurement and nominal rate of a working gap for each of valves. Results of calculations put on the scheme over line (2) over designation of the corresponding valves. As nominal rates of working gaps for inlet and final valves are various, try not to allow confusions. The sequence of an arrangement of valves from both parties of the engine is identical and has the following order:
The final - Inlet - Inlet - Final - Final - Inlet - Inlet - Final
10. If all gaps lie within admissible ranges, establish into place a cover of a head of cylinders (see. Removal and installation of a cover of a head of cylinders). Restore initial connection of hoses and return into place a plastic cover of access. Establish the right forward wheel, then lower the car on the earth and tighten bolts of fastening of a wheel with demanded effort.
11. In case of identification of inadmissible deviations it is necessary to make correction of klapanny gaps (see further)

1. Remove a camshaft (see. Removal, check of a condition and installation of a camshaft and pushers of valves).

2. Take from the nest in a head the first pusher and remove from an end face of a core of the valve an adjusting washer. Remember that the washer can подлипнуть to a pusher, - try not to drop it in the course of extraction of the last. Dry wipe a washer, having completely removed from it oil traces.

3. Then a micrometer measure thickness. Usually the thickness of a washer is put on its surface, however marking can not represent the facts owing to wear of metal.

4. If the gap measured for this valve exceeds admissible value, it is necessary to pick up a washer of bigger thickness on the size put on the scheme for this valve over line (2). If the gap size, on the contrary, is excessively small, the thickness of a washer should be respectively reduced.
5. Carry out under designation of each of valves on the scheme three more lines. Over the line (4) inscribe result of measurement of thickness of the removed washer. Add to it (or subtract from it) the size inscribed over line (2) and write down result of calculation over line (5).
I\Inlet valve
Е — the Final valve
1 — the Measured gap
2 — the Difference between 1 and 3
3 — the Nominal gap
4 — Thickness of an original adjusting washer
5 — Thickness of a required new adjusting washer

6. Washers are issued with a thickness in a range from 2.225 mm to 3.550 mm with a step in 0.025 mm. Before installation the new washer should be wiped carefully.
7. Repeat the procedure described in subitem 2 — 4 for remained valves. Try not to mix pushers.
8. Before installation grease adjusting washers with pure impellent oil and establish them on end faces of cores of the corresponding valves marking down. After each of washers establish a pusher which also it is necessary to grease previously. After installation the pusher any more should not be taken from a head as it can lead to washer loss.
9. Having finished installation of components, return into place a camshaft (see. Removal, check of a condition and installation of a camshaft and pushers of valves). Before installation of a cover of a head of cylinders once again check klapanny gaps.