Citroen Xantia

Since 1993 of release

Repair and car operation



Citroen Xantia
+ Introduction
+ The operation manual
+ Routine maintenance
- Engine repair
   + The repair procedures which are not demanding extraction of the engine from the car - petrol engines
   - The repair procedures which are not demanding extraction of the engine from the car - diesel engines
      Measurement компрессионного pressure and engine check on tightness
      Fixing cranked / distributive shaft and ТНВД for the purpose of prevention of casual hit of valves in contact to pistons in the course of performance of procedures of service of the car
      Removal and installation of a cover of a head of cylinders
      Removal and installation of a pulley of a cranked shaft
      Removal and installation of covers газораспределительного a belt
      Belt of drive ГРМ - the general information, removal, check of a condition and installation
      Removal and installation of cogwheels of a belt of drive ГРМ
      Removal and installation of components of the right support of the power unit and натяжителя газораспределительного a belt
      Removal and installation of an intermediate roller газораспределительного a belt
      Removal, check of a condition and installation of a camshaft and pushers of valves
      Check and adjustment клапанных backlashes
      Removal and installation of a head of cylinders
      Removal and pallet installation картера
      Removal, check of a condition and installation of the oil pump with приводной a chain
      Replacement of epiploons
      Gauges of level, pressure and temperature of impellent oil - the general information
      Removal, check of a condition and installation of a flywheel/privodnogo of a disk
      Check of a condition and replacement of support of a suspension bracket of the power unit
      Removal and installation маслоохладителя
   + Removal and engine major repairs
+ Systems of cooling, heating
+ The power supply system and release
+ Engine electric equipment
+ Coupling
+ Transmission
+ Power shafts
+ Uniform hydraulic system
+ Brake system
+ Running gear and steering
+ Body and salon furnish
+ Onboard electric equipment
+ Electric equipment schemes





Measurement компрессионного pressure and engine check on tightness

Check компрессионного pressure

It is required special компрессометр for diesel engines.

At decrease in efficiency of return of the engine, and also at occurrence of admissions of ignition of a mix which cannot be explained malfunctions in the power supply system check компрессионного pressure in cylinders will help to define the general condition of the engine and to establish the reason of taking place infringements. Regular measurement компрессионного allows to reveal pressure beforehand and developing malfunctions and to avoid the troubles connected with refusals of knots and systems of the car.

 PERFORMANCE ORDER

1. Check is made by means of special компрессометра, intended for compression measurement on diesel engines and calculated on a high pressure. The measuring instrument is connected to the carving nozzle, rolled an aperture under candle installation накаливания or atomizers. On considered models the nozzle under форсуночные apertures in view of limitation of access to candle is required. Hardly it is necessary to get компрессометр in constant using for carrying out of incidental checks, - it will be more reasonable to hire it, or to spend measurements on a car repair shop.

2. Follow instructions of manufacturers of the device. In the absence of instructions it is necessary to take care of performance of following general requirements:
   a) the Battery should be in good repair and is completely charged, the engine - is heated-up to normal working temperature;
   b) All atomizers (or candles накаливания) should be turned out. At removal of atomizers do not forget to take also a washer пламегасителей that the last have not appeared are beaten out developed in chambers of combustion by pressure;
   c) Electromagnetic запорный the valve of switching-off of giving of fuel should be disconnected in order to avoid fuel receipt in cylinders and casual start of the engine.
3. During check there is no necessity to keep a pedal of gas squeezed out as air soaked up in the engine is not banished through the throttle chamber.
4. The so much absolute size of the removed indications, how many uniformity of distribution of pressure between cylinders (Specifications see) is important not.
5. The decrease reason компрессионного pressure upon diesel engines is usually established slightly more difficult, than on the petrol. Thus carrying out of "damp" check by a way заливания in cylinders of a small amount of oil does not give desirable result in view of a high probability of leaving of oil in the vortical chamber or in deepening in the bottom of the piston instead of filling of landing backlashes of piston rings.
6. Pressure in all cylinders should be almost identical. In the indications, exceeding the value stipulated in Specifications, it is necessary to consider a difference as an infringement sign. Remember that pressure in the serviceable engine should rise quickly enough. The low indication on the first step with its gradual increase at the subsequent, speaks about deterioration of piston rings. If pressure does not rise at all, it is necessary to check up tightness of closing of valves and a condition of a lining of a head of cylinders (the probability of formation of cracks in a head body is not excluded also). The congestion of adjournment on the bottom surfaces of plates of valves also can cause loss компрессионного pressure.
7. Excessively high indications testify also development нагарообразования on internal surfaces of a head of cylinders, valves and pistons. A head it is necessary to remove and make it декарбонизацию (Removal and engine major repairs see).

Engine check on leaks

During check speed of an exit from cylinders закачанного in them of the compressed air is defined. The given check is some kind of alternative to measurement компрессионного pressure. Moreover, from many points of view, it is much more effective, as allows to reveal visually a source of leak of air that frequently there is more visually, than a treatment of results of measurement of a compression.

Unfortunately, the equipment necessary for carrying out of check on leaks, is not among широкодоступного, therefore it will be more reasonable to charge performance of procedure to experts of car-care centre.

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