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
3.2. The petrol engine in volume of 2,0 litres
3.2.1. Kinds of repair of the engine without dismantle from the car
3.2.1.1. Specifications
3.2.1.2. Compression check in engine cylinders
3.2.1.3. An order of installation of the piston of 1st cylinder in ВМТ a compression step
3.2.1.4. A cover of a head of the block of cylinders
3.2.1.5. A pulley коленвала
3.2.1.6. A cover of a chain drive of cam-shafts
3.2.1.7. A chain of a drive of cam-shafts
3.2.1.8. Натяжитель chains, успокоитель and drive asterisks
3.2.1.9. Cam-shafts
3.2.1.10. Levers of a drive of valves and hydraulic regulators
3.2.1.11. A head of cylinders
3.2.1.12. The oil pallet
3.2.1.13. The oil pump
3.2.1.14. Маслоохладитель
3.2.1.15. Epiploons коленвала
3.2.1.16. A flywheel (or a leading disk of the hydrotransformer)
3.2.1.17. Details of a suspension bracket of the power unit
3.2.2. Dismantle and engine major repairs
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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3-2-1-9-raspredvaly.html

3.2.1.9. Cam-shafts


In the description resulted more low it is recommended to remove a chain, however it is necessary only in the event that at assemblage cam-shafts will be exposed on labels which are provided on a chain by the manufacturer. If the piston of 1st cylinder is exposed in ВМТ a compression step (cм. Subsection 3.1.1.3) labels on conducted asterisks of cam-shafts can and not coincide with links of a chain which have distinctive colouring (see subsection 3.2.1.7).

Adjusting labels on links of a chain and on both asterisks can be put by the owner and be used for correct orientation of asterisks during assemblage. Such way is applicable under one condition – asterisks should be established without the slightest infringement of their initial orientation.

Labels of mutual orientation

To keep mutual orientation of an asterisk and a chain it is expedient on each of asterisks and on a chain to put labels of mutual orientation, to adhere asterisks to a chain and to provide reliable mutual fixing drawing (an arrow it is specified обвязка with the help изоляционной tubes) see.

This way demands special carefulness, but should facilitate essentially work to the owner of the car as necessity of removal of a cover of a chain drive of the mechanism timing disappears.

Sequence of an inhaling of bolts of covers of basic necks


Removal

PERFORMANCE ORDER
1. Remove the ignition distributor (subsection 7.7.4 see).
2. Remove a chain and conducted asterisks of cam-shafts (subsection 3.2.1.7 see). If the chain remains on the engine put labels of mutual orientation (on fig. of the Label of mutual orientation) and turn away bolts of asterisks (subsection 3.2.1.7 item 9 see).
3. All covers of basic necks of cam-shafts are identical, except for a forward (right) cover of a cam-shaft of final valves. Therefore, before removing covers it is necessary to put on them identification labels.
4. On the top part of covers the arrow specifying in correct orientation of a cover at assemblage (all arrows should specify towards a chain) is cast. On cam-shafts of inlet and final valves are available distinctive marks, – "I" on a cam-shaft of inlet valves and "Е" on a cam-shaft final.
5. By means of a marker or чертилки number all covers one after another, beginning from the lobbies located from outside of a chain. Such measure provides installation of covers on former places at assemblage.
6. Ослабьте an inhaling of bolts of fastening of covers of basic necks of cam-shafts, working in sequence, return represented on fig. Sequence of an inhaling of bolts of covers of basic necks.
7. Weaken an inhaling of bolts in stages, on one turn for reception. It is necessary for uniform and gradual easing of efforts from springs of the valves operating on covers. After full отпускания springs bolts can be turned out definitively. Bolts of fastening of covers share on length on three dimensional groups, therefore, remember an arrangement of bolts of covers in process of them отворачивания.
8. Remove from covers of basic necks a tube of giving of oil, and from 2nd cover remove маслоотражательную a plate. Remove covers of a cam-shaft of final valves, then remove a cam-shaft.
9. Repeat actions it agree subitem 6-8 and remove covers of a cam-shaft of inlet valves, then remove a cam-shaft (keep in mind that on these covers маслоотражательной plates are not present).

Condition check

PERFORMANCE ORDER
1. Examine the surfaces adjoining to basic necks of cam-shafts, in covers and in a head of cylinders. Check up presence on surfaces задиров and traces of deep development. Check up presence on cams of cam-shafts of traces выкрашивания metal (sites of a bluish shade), deep development, having chopped off, the flat sites formed owing to deterioration.
2. Establish a cam-shaft in призматические support and with the help стрелочного the indicator check up palpation in an average neck. If palpation exceeds norm a cam-shaft replace.
3. By a micrometer measure the size of each of cams of cam-shafts and compare results with specified in подразделe 3.2.1.1. At detection of signs of damages or in case of the raised deterioration a cam-shaft replace.
4. Now check up a backlash in basic necks of a cam-shaft. It can be made in two ways, – or direct measurement, or by means of plastic calibre Plastigage.
5. At backlash measurement by a direct method establish covers of basic necks of cam-shafts in a head of cylinders, according to the labels put before dismantling not to break a former order and orientation. Establish a tube of a supply of oil and tighten bolts of covers with the set moment, in sequence specified on on fig. Sequence of an inhaling of bolts of covers of basic necks. Measure internal diameter of basic surfaces of covers and compare with specified in подразделe 3.2.1.1. If internal diameter in any cover exceeds limiting a head of cylinders replace.
6. The backlash is defined as a difference of internal diameter of a basic surface of a cover and diameter of a basic neck.
7. At measurement of a backlash by means of plastic calibre Plastigage clear a pure fabric not leaving pile cam-shafts and basic surfaces of necks in a head of cylinders and in covers. Lay cam-shafts in a head of cylinders.
8. Lay pieces plastic калибровочной a wire along surfaces of basic necks of cam-shafts in parallel their axis. Having taken the measures excluding turn of cam-shafts, execute the actions, which order is stated in subitem 3-11 (see more low), except for a stage connected with drawing of hermetic on covers.
9. Turn away bolts of fastening of covers (item 6 above see) and cautiously get covers and a tube of giving of oil, without supposing rotation of cam-shafts.
10. Compare the greatest width of the crushed wire from each neck to a scale on packing of calibre and define a backlash.
11. Compare result of measurement with specified in подразделe 3.2.1.1. If the backlash exceeds norm measure by a micrometer diameter of a basic neck of a cam-shaft. If diameter less maximum permissible replace a cam-shaft and again check up backlashes in basic necks. If backlashes still above norm replace a head of cylinders and a cover of basic necks.

Installation

PERFORMANCE ORDER
1. Be convinced of correctness of gearing of each of levers with a corresponding hydroregulator and the directing disk established on one of valves which are put in action by the lever.
2. Plentifully grease surfaces of a support of necks of a cam-shaft in a head of cylinders with pure oil for the engine.
3. Establish cam-shafts on the places in a head of cylinders. The cam-shaft of final valves is easy for distinguishing on шлицу on the left side for a drive of the distributor of ignition.
4. Be convinced that коленвал is in position ВМТ of a step of compression (a groove on a sock коленвала under шпонку should be turned vertically upwards if to look on the right side of the engine).
5. Establish cam-shafts on the places in a head of cylinders so that cams of 1st cylinder have been turned aside from corresponding valves, сориентировав pins at end faces (are specified by arrows). At correct position of cam-shafts the adjusting pin of an asterisk of a cam-shaft of inlet valves in its forward part should be directed at 10 o'clock (if to look on the right side of the engine), and the pin of a cam-shaft of final valves should be in the top vertical position.
6. Be convinced of absolute cleanliness of contact surfaces of covers of basic necks and beds of a head of cylinders, absence on these surfaces of any extraneous inclusions and oil traces. Apply a thin film hermetic on a demountable surface of an extreme left cover of a cam-shaft of final valves which is noted by inclined shading.
7. Establish covers of basic necks in a former order, being guided on the labels put at dismantling.
8. Establish маслоотражательную a plate on 2nd cover of a cam-shaft of final valves, establish a tube of a supply of oil.
9. Then establish tubes of a supply of oil, having strengthened them on bolts of covers of basic necks. Wrap bolts of covers of basic necks and tighten by hand.
10. Tighten bolts of fastening of covers of a cam-shaft of inlet valves in the specified sequence. Tighten bolts in regular intervals, gradually increasing effort, wrapping bolts on a turn at one time, until then while covers will not adjoin to a head of cylinders (fig. Sequence of an inhaling of bolts of covers of basic necks see). Then tighten bolts with the set moment. An inhaling carry out only in that order to provide uniform and gradual increase of effort from outside springs of valves on covers of basic necks.
11. Tighten bolts of covers of a cam-shaft of final valves, having repeated actions of the previous point.
12. Establish a chain and asterisks of cam-shafts (subsection 3.2.1.7 see).
13. If the chain did not act in film, dress asterisks on corresponding cam-shafts, dress a chain, precisely having combined labels on a chain and on the asterisks, put before dismantling. Wrap bolts of asterisks, preliminary having dressed on them washers, tighten bolts with the set moment.
14. Establish the ignition distributor (subsection 7.7.4 see).



3.2.1.8. Натяжитель chains, успокоитель and drive asterisks

3.2.1.10. Levers of a drive of valves and hydraulic regulators