Citroen Xantia

1. Disconnect a negative wire from the battery.
2. Empty cooling system (address to the Head Routine maintenance).
3. Remove the inlet pipeline and a final collector (the Power supply system - diesel models see). Alternatively (in particular on models with a turbo-supercharging), remove only the inlet pipeline (see in the same place), then give nuts of fastening of a final collector, remove remote plugs, then, by means of an ex-tractor (or two законтренных nuts), take fixing hairpins from a head of cylinders now the final collector can be left on a place together with турбокомпрессором.
4. Take care of reliable fixing of a final collector with турбокомпрессором, try not to admit натягивания маслоподающей a tube of the last.

5. Disconnect from atomizers and remove hoses of tap of leaks.

6. Disconnect fuel tubes from atomizers and ТНВД and remove them, operating according to the instructions resulted in section of System of decrease of toxicity and release of fulfilled gases.
7. Give a fixing nut and disconnect a wire of a food from a corresponding candle of heat. Remove washers.

8. Disconnect a hose охладительного a path from the left back part of a head of cylinders.

9. Disconnect a small hose охладительного a path from forward (from outside газораспределительного a belt) a head end face.

10. Liberate a hose of return of fuel from a bearing arm on a head of cylinders. Shift a hose aside.

11. Disconnect a cable of gas from ТНВД (the Power supply system - diesel models see) and shift it aside, having taken away from a head.
12. Remove a casing of the fuel filter/thermostat (see the Head of System of cooling, heating and ventilation).
13. Give a nut/turn out a hairpin of fastening of a bearing arm of a hose охладительного a path and an elevating eye of the power unit to a head of cylinders from outside to transmission.
14. Remove a camshaft cogwheel (Removal and installation of cogwheels of a belt of drive ГРМ see).
15. Remove натяжитель газораспределительного a belt and an arm of the right support of the engine (Removal and installation of components of the right support of the power unit and натяжителя газораспределительного a belt see).
16. Remove an intermediate roller газораспределительного a belt (Removal and installation of an intermediate roller газораспределительного a belt see).
17. Turn out a bolt of fastening of a forward plate of the engine to basic arm ТНВД.
18. Give a nut and a bolt of fastening of a forward plate and bearing arm of the generator to arm ТНВД. Remove a forward plate.

19. In stages give bolts of fastening of a head of cylinders, operating in an order, the return specified in illustrations (for easing of bolts the key of type TORX in the size Т55 is required).

20. Take bolts and remove them together with remote plugs.

21. Having shaken, lift a head, removing it from the block of cylinders and a directing pin. For head rocking take advantage of firm adaptations of manufacture of company Citroyon, or it is simple two bent under 90 ° metal hooks. Do not try at all подрычажить a head under an interfaced surface in order to avoid infringement of its density прилегания.

22. Remove a head, then its sealing lining.

1. Make sure that газораспределительный the belt is removed from cogwheel ТНВД, then turn a cranked shaft, having resulted pistons of 1st and 4th cylinders in positions ВМТ. Fix on the block of cylinders циферблатный a measuring instrument плунжерного type and null it on interfaced surfaces of the block. Translate плунжер on the middle of the bottom of the piston of the first cylinder and slowly повращайте a cranked shaft forward-back in an insignificant range. Consider maximum of the indications fixed by the device. Write down result of measurements.

2. Operating in the order described above, measure size выступания over an interfaced surface of the block of 4th cylinder, then turn a cranked shaft for a half-turn (180 °) and measure size выступания pistons of 2nd and 3rd cylinders.
3. At absence near at hand циферблатного a measuring instrument, take advantage of a planeness measuring instrument (the steel ruler put on an edge) and probeом лезвийного type, or колумбусом with нониусной a scale (remember that such method is much less reliable).

4. Define maximum of the removed measurements and take advantage of it for definition of a thickness required for installation with a head of cylinders of a new lining (see the table resulted more low). By quantity of cuts or the apertures punched on edge to a head on its axial line it is possible to define type and volume of the engine for installation on which the given lining approaches.

1. Manufacturers of cars recommend for check of the validity of fixing bolts to the further use to make measurement of their length. Nevertheless, according to composers of the present Management, it will be more reasonable to replace all bolts without dependence from their condition. Pay attention that if the bolt is cut off for lining fixing, ("Installation" see further,), at definitive installation of a head it it is necessary to replace item 2.

2. Measure length of bolts from the basis of their head to the bottom cut. By means of resulted below the table define the validity of each of bolts to the further use.

1. Turn a cranked shaft clockwise (looking from outside газораспределительного a belt) so that pistons of 1st and 4th cylinders have passed position of the НМТ and have started to rise. Stop a shaft, a code pistons will appear on half of course upwards. Pistons of 2nd and 3rd cylinders, accordingly, will stop on half of course downwards.
2. Having arranged correct image (identification labels towards turned to газораспределительному to a belt to the engine end), lay picked up for type and a thickness a new sealing lining on an interfaced surface of the block of cylinders. Track, that the directing pin was on the place with turned to газораспределительному to a belt of the party of an interfaced surface of the block. As one directing pin is provided only, the lining can be displaced in the course of head installation that is especially probable when works are made on not taken of the car and located наклонно the engine. In the worst variant possibility of damage of valves or a lining is not excluded at blow of the first about last. In order to avoid such troubles, cut a head of one of fixing bolts and saw through in an end face of the last шлиц for the purpose of maintenance of its rotation by means of a screw-driver. Screw a bolt in one of carving apertures in the block from outside a flywheel and use it as the second directing pin.
3. Lower a head on the block of cylinders.
4. Grease a carving part and the bottom surfaces of heads of fixing bolts with greasing Molykote G Rapid Plus, or any other of a category of the refractory.
5. Accurately fill all fixing bolts in the apertures in a head (do not forget about remote plugs) and by hand tighten them. After вворачивания three-four bolts, turn out the cut off directing bolt (item 2 see) and replace its new.

1. In stages, in an order specified in illustrations, tighten bolts of fastening of a head of cylinders with effort of the first stage.

2. Operating in a former order, tighten bolts with effort of the second stage, hold on on a corner of thirds (take advantage of a goniometer or put a corresponding scale directly on a head surface).
3. The further installation is made in an order, the return to a dismantle order. Pay attention to following moments:
   a) Track correctness of a lining and reliability of fixing of all wires and hoses охладительного and vacuum paths;
   b) Installation of a cover of a head of cylinders make according to the instructions resulted in section Removal and installation of a cover of a head of cylinders;
   c) do not forget to connect the inlet pipeline and a final collector (the Power supply system - diesel models see);
   d) Necessarily fill cooling system (address to the Head Routine maintenance);
   e) Connect the battery and remove air from the power supply system (the Power supply system - diesel models see).

1. In stages, in an order specified in illustrations, tighten bolts of fastening of a head of cylinders with effort of the first stage.

2. Operating in a former order, tighten bolts with effort of the second stage, then hold on on a corner of thirds (take advantage of a goniometer or put a corresponding scale directly on a head surface).
3. The further installation is made in an order, the return to a dismantle order (the subsection "Models without a turbo-supercharging", item 3 see).