Service Nissan Sunny with 1991 on 1997 of release in a body n-14.
1. The maintenance instruction
2. Maintenance service
3. Engines
3.1. The petrol engine in volume of 1,4 and 1,6 litres
3.1.1. Kinds of repair of the engine without dismantle from the car
3.1.2. Dismantle and engine major repairs
3.1.2.1. Specifications
3.1.2.2. Engine major repairs
3.1.2.3. Diagnostics of the engine by means of the vacuum gauge
3.1.2.4. The power unit from a manual transmission
3.1.2.5. The power unit with automatic transmission
3.1.2.6. A head of the block of cylinders
3.1.2.7. A head of cylinders and valves
3.1.2.8. Pistons and rods
3.1.2.9. Коленвал
3.1.2.10. The block of cylinders
3.1.2.11. Shatunno-piston group
3.1.2.11.1. Check
3.1.2.11.2. Installation and check of backlashes in шатунных bearings
3.1.2.12. Radical and шатунные bearings
3.1.2.13. Piston rings
3.1.2.14. Start-up of the engine after major repairs
3.2. The petrol engine in volume of 2,0 litres
3.3. The diesel engine
4. Cooling system
5. Heating and ventilation system
6. Fuel and an exhaust system
7. System of start-up of the engine
8. Coupling
9. Transmissions
10. Semiaxes
11. Brakes
12. Suspension brackets and a steering
13. A body
14. An electric equipment
 




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3-1-2-11-shatunno-porshnevaya-gruppa.html

3.1.2.11. Shatunno-piston group


Correct mutual orientation of the piston and rod

1. Number of dimensional group of the piston


2. An orientatsionnaja label


3. A lubricant aperture in a rod body


4. A place of drawing of number of the cylinder which the rod concerns


Check

PERFORMANCE ORDER
1. Before check rods and pistons it is necessary to clear and remove old rings from the piston.
2. Cautiously move apart a ring, having displaced on the top part of the piston. That at removal the ring has not got to an empty flute, lay under a ring two-three old щупа.
3. Соскребите a deposit from the bottoms of pistons. After removal of the top rough layer of a deposit clean the bottom of the piston a wire brush manually (or an emery paper on a basis made of cloth).
4. Cautiously remove a deposit from flutes of pistons by means of the old broken piston ring.
5. Wash out the piston in gathering with a rod in solvent, carefully dry. Be convinced of cleanliness of grooves for an oil drain in flutes under piston rings.
6. Measure by a micrometer diameter of the piston of perpendicularly axis of a piston finger (on the set distance from edge of a skirt of the piston) and compare result to the standard. The dimensional group of the piston is stamped on its bottom. If deterioration of the piston exceeds maximum permissible the piston is subject to replacement.
7. Check up a backlash between a piston ring and a wall of a flute of the piston. For this purpose insert a ring from lateral aspect into a corresponding flute and щупом measure a backlash between the top surface of a ring and a flute wall. Even if at a new ring the backlash exceeds norm the piston replace.
8. Check up a backlash in a joint of piston rings for what insert a ring into the corresponding cylinder and push the piston bottom to exclude a ring warp at measurement. Push a ring on such depth on which the edge of a skirt of the piston will be made even to a demountable plane of the block of cylinders then get the piston. Measure a backlash щупом. If the backlash exceeds norm replace rings and repeat procedure. If the backlash exceeds norm with new rings the cylinder should be chiseled and отхоннинговать (cм. Subsection 3.1.2.10).
9. Carefully check up presence of cracks on a piston skirt, on lugs of a piston finger and in places between flutes of piston rings.
10. Check up presence having chopped off and задиров on a rubbing site of a skirt of the piston, traces обгорания along the edges of the bottom. If are observed сколы and teases it specifies in a frequent overheat of the engine, abnormal combustion of a fuel mix can be one of which reasons. Careful check of power supply systems, greasings and coolings in this case is required. Traces оплавления on a lateral surface of the piston testify to break of gases from the combustion chamber. The burn-out of the bottom of the piston or the scorched sites along the edges of the bottom specify in abnormal work of the engine because of wrong installation of the moment of ignition (too early ignition), or owing to a detonation. If the specified defects it is necessary to find their reason are found out and to eliminate, otherwise display of the reasons of such deterioration probably and further. Wrong installation of the moment of ignition, refusal of system of injection of fuel can be the reasons of abnormal work of the engine подсос air on a soaking up collector.
11. Corrosion of the piston in the form of small poles (питтинга) testifies to penetration into the combustion chamber (and also in картер коленвала) a cooling liquid. Here again it is required to find the reason and to eliminate.
12. Carefully check up presence of such damages on rods, as cracks on heads about piston fingers and in installation sites шатунных bearings. Whether check up there is a deformation of a body of a rod (перекручивание or a bend). Damage of rods is improbable and is shown only in cases of jamming of the engine or a strong overheat. Careful check of rods can be executed only in a workshop where there is a necessary equipment.
13. If necessary the piston can be removed from a rod and to collect with a rod as follows.
14. Get lock rings of a piston finger and push out piston пале. If necessary rest the piston and cautiously beat out a finger blows молоткапо оправке.
15. Extraction of a piston finger is considerably facilitated, if the piston to heat up till 60-70 With.
16. Check up presence on a piston finger and an aperture in a head of a rod of signs of deterioration or damages. Check up a finger backlash in the piston and in a rod.
17. If the plug of a head of a rod and a piston finger are worn strongly out, or if the finger backlash in a rod head exceeds norm it is necessary to replace a finger and the plug. Replacement of plugs of heads of rods should be carried out in a workshop.
18. If the backlash between the piston and a finger considerably exceeds norm it is necessary to replace the piston and a finger in the complete set. Keep in mind that the backlash between the piston and a finger does not play so essential role as a backlash in a rod head.
19. Rods in itself replacements do not demand, except for cases of jamming of the engine, or other serious breakages. Check up a condition of rods survey, at detection of deformation of rods hand over them in a workshop of car-care centre for check and repair.
20. Get new details on replacement worn out.
21. Сориентируйте the piston and a rod so that the label on a part of the piston which should be turned towards a forward part of the engine (in the form of an arrow or line) correctly settled down concerning a lubricant aperture in a rod body (fig. Correct mutual orientation of the piston and a rod see). At correct mutual orientation the label on the piston should be turned towards a forward part of the engine, and the lubricant aperture in a rod body should be turned towards a back part of the block of cylinders.
22. Slightly grease a piston finger with fresh oil for the engine and insert into apertures in the piston and in a rod head. If necessary besiege a finger into place easy blows of a hammer on оправке.


The prevention

To facilitate installation of a piston finger the piston it is recommended to heat up.


23. Check up freedom of rotation of a finger in piston lugs, then establish lock rings in piston flutes.


3.1.2.10. The block of cylinders

3.1.2.11.1. Check