Citroen Xantia

1. Disconnect a negative wire from the battery and uncover heads of cylinders (see. Removal and installation of a cover of a head of cylinders).
2. Remove a camshaft cogwheel (see. Removal, check of a condition and installation of a natyazhitel and cogwheels of a gas-distributing belt).
3. Remove VV the ignition coil (see. Ignition system - petrol models).
4. Having removed the coil, weaken the top bolt of fastening of a casing of the thermostat to the left end face of a head of cylinders. Turn out a bolt and remove it together with a washer - it is used also for fastening of a cover of left (No. 1) of the bearing of a camshaft.

5. Carefully remove a maslopodayushchy tube from unions on covers of bearings of a camshaft. Pay attention that each of unions is equipped with a sealing ring. Try to remember the adjusting provision of nozzles on both ends of a tube.

6. Covers of bearings should be consistently numbered (with 1 on 5), in the direction from the party of the engine turned to transmission. In the absence of factory identification labels put them independently by means of a marker. Mark also orientation of each of covers on the engine.

7. In stages (on one turn for an approach) evenly weaken nuts of fastening of covers for the purpose of gradual removal of effort developed by klapanny springs. Further nuts can be turned on and removed finally.

8. Once again make sure available identification and landing labels on covers, then remove the last from a head of cylinders.

9. Accurately take a camshaft from a head of cylinders and remove an epiploon from its pin.

10. Prepare eight numbered plastic bags, then by means of a rubber sucker serially take from a head pushers of valves, at once stacking them in as appropriate numbered packages. At assembly pushers should be established strictly on the former places. Not observance of this requirement conducts to essential reduction of service life of components of the klapanny mechanism. In case of need remove also adjusting washers from end faces of cores of valves and combine in packages with the corresponding pushers. Remember that washer often подлипают to pushers, - try not to drop them in the course of extraction of the last.

1. Check a condition of bearing necks and working surfaces of cams of a camshaft. In case of identification of signs of wear, furrows or deep scratches, replace a shaft. Check also a condition of bearing surfaces in beds of covers and heads of cylinders. In case of detection of serious defects it is necessary to replace a head also. In the presence of near at hand suitable equipment degree of wear of necks of a shaft can be estimated by a way of direct measurement (in the presence of the corresponding standard requirements - see. Specifications). Remember that it is considered the first the bearing located from the party turned to transmission of the engine.
2. Check working surfaces of pushers contacting to cams on existence of scratches and signs of excessive wear. Defective pushers replace. In case of identification of serious damages check also a condition of working ledges of the corresponding cams of a camshaft. In case of need make replacement of defective components.

1. At the corresponding complete set establish on end faces of cores of the valves adjusting washers of pushers. In order to avoid violation of installation of klapanny gaps (see. Check and adjustment of klapanny gaps) washers should be established strictly on the former places.
2. Properly grease pushers and their landing nests in a head of cylinders. Accurately fill pushers in the former nests. Track perpendicularity of landing of pushers in a head.
3. Grease necks and cams of a camshaft and get the last on the regular place in a head of cylinders. Temporarily plant on a forward pin of a shaft a cogwheel and achieve drilling combination in it with a reciprocal opening in a head body. Make sure available on the place of the core blocking a cranked shaft (see. Fixing cranked/distributive shaft for the purpose of prevention casual in the course of performance of procedures of service of the car).
4. Carefully smooth out and dry wipe interfaced surfaces of covers and places of their landing on a head of cylinders. Grease with hermetic interfaced to a thermostat casing a surface of a cover of the first bearing, then establish covers on the regular places according to identification and landing marking.
5. In stages (on one turn for an approach) evenly tighten nuts of fastening of covers so that the last nestled on a head, then tighten nuts with demanded effort.
6. Check a condition of sealing rings of unions of landing of a maslopodayushchy tube, in case of need make replacement. Grease rings with pure impellent oil and plant a tube on the regular place. Track, that sealing rings were not displaced in the course of landing of a tube to unions of covers of bearings.
7. Check a condition of a sealing washer, in case of need make its replacement. Screw and tighten the top bolt of fastening of a casing of the thermostat.
8. Establish to the place of VV the ignition coil (see. Ignition system - petrol models).
9. Establish a new epiploon of a camshaft (see. Epiploon replacement (ов) a camshaft), then establish a cogwheel (see. Removal, check of a condition and installation of a natyazhitel and cogwheels of a gas-distributing belt).
10. Check installation of klapanny gaps (see. Check and adjustment of klapanny gaps).
11. Establish a cover of a head of cylinders (see. Removal and installation of a cover of a head of cylinders) also connect a negative wire to the battery.