Nissan Almera service from 1995 to 2000 in N15 body
1. General information
2. The general requirements to car repairs
3. Operation and car maintenance
4. Petrol engines
4.1. Removal and installation of the power unit
4.2. Dismantling and engine assembly
4.3. Block of cylinders
4.4. Shatunno-porshnevaya group
4.5. Cranked shaft and flywheel
4.6. Gazoraspredeleniye mechanism
4.7. Head of the block of cylinders of GA14DE and GA16DE engines
4.7.1. Removal of a head of the block of cylinders
4.7.2. Installation of a head of the block of cylinders
4.7.3. Dismantling, check of a technical condition, repair and assembly of a head of the block цилиндровa
4.7.4. Check and adjustment of gaps in the mechanism of a drive of valves
4.8. Head of the block of cylinders of the SR20DE engine
4.9. Cooling system
4.10. Greasing system
4.11. System of production of the fulfilled gases
4.12. Power supply system
4.13. Complex control system of the engine (KSUD)
5. Diesel engines
6. Transmission
7. Running gear
8. Steering
9. Brake system
10. Electric equipment
11. Body
12. Appendices
13. Electric equipment schemes
 









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4.7.1. Removal of a head of the block of cylinders


Fig. 2.17. An arrangement of hoses and pipelines in a zone of a head of the block of cylinders of the engine


Dump pressure in an engine power supply system (see« Removal and engine installation»). Remove the storage battery. Lift on supports or the lift a forward part of the car. Merge from the engine oil and cooling liquid. Remove a forward right wheel, a mudguard and the bottom protective guards of the engine. Remove the pump of the hydraulic booster of the steering mechanism and by means of make-shifts fix it in a motor compartment, having taken aside and without disconnecting from it hoses. Release a cover of a head of the block of cylinders for what remove an arm bracket, disconnect a hose of ventilation of a case, remove the case of the air filter. Disconnect from spark plugs high-voltage wires and turn out candles. Uncover a drive and, turning a cranked shaft, establish a label on a pulley of a cranked shaft against a label on the block of cylinders. This provision of a cranked shaft corresponds to finding of the piston of the 1st cylinder in VMT at the end of a compression step. Be convinced of that cams of a camshaft of the 1st cylinder are directed up, uncover the ignition distributor. The rotor of the distributor of ignition should be turned in situation «5 hours». Remove the ignition distributor, having remembered or having written down its situation on a head of the block of cylinders. Remove a forward cover of a head of the block of cylinders. According to fig. 2.17 disconnect hoses from a head of the block of cylinders. Remove the thermostat.
Be convinced available labels on asterisks and the corresponding links of a chain. If labels are not present or they are badly distinguishable, put them with paint.
Remove a natyazhitel of a chain of a drive of an intermediate asterisk and its laying. Remove a natyazhitel of a chain of a drive of camshafts.

Fig. 2.18. Blocking of a camshaft of inlet valves


Fig. 2.19. Order of an otvorachivaniye of bolts of fastening of covers of cases of bearings of camshafts


By means of a wrench «on 22 mm» block camshafts from rotation (fig. 2.18) and turn out bolts of fastening of an intermediate asterisk and asterisks of camshafts. Remove a chain of a drive of camshafts together with asterisks. Remove an intermediate asterisk and its axis. In the sequence specified fig. 2.19, turn out bolts of fastening of covers of camshafts, remove covers, having laid them in the order of removal, and take out camshafts. Disconnect a reception pipe of the exhaust silencer. Remove an arm of the inlet pipeline. Disconnect from an absorber a hose suitable to the electromagnetic valve of a retsirkulyatsiya паров of fuel.

Fig. 2.20. Arrangement of vacuum hoses and pipelines: 1 — the butterfly valve case; 2 — the inlet pipeline; 3 — the electromagnetic valve and the coal filter; 4 — the valve of differential pressure; 5 — the retsirkulyatsiya valve; 6 — a regulator of pressure of fuel; And — to the coal filter; B — to the case of the air filter


According to fig. 2.20 disconnect hoses and pipelines from the case of a butterfly valve, a regulator of pressure of fuel, the inlet pipeline and the valve of differential pressure.

Fig. 2.21. Order of an inhaling of bolts of fastening of a head of the block of cylinders


Расстыковать electric sockets to clean plaits of wires from a head of the block of cylinders. Disconnect топливопроводы from the fuel highway. Disconnect a butterfly valve cable. As it should be, the return given on fig. 2.21, turn out bolts of fastening of a head of the block of cylinders and take out them.
Be convinced of that all hoses and electricity cables are disconnected from a head of the block of cylinders and by means of the suitable lever отстыкуйте a head from the block of cylinders together with the inlet pipeline and a final collector. Establish a head on a wooden surface the socket plane down. Do not overturn a head in order to avoid drop-out of pushers.
Remove laying of a head of the block of cylinders. Remove a reception pipe of exhaust silencers. Remove the bottom cross-piece of a body. Remove antivibrating struts on the power unit. On cars with an automatic transmission remove the bottom protective cover of the hydrotransformer. Remove an oil case and a maslopriyemnik of system of greasing of the engine. Remove a pulley from a cranked shaft.

Fig. 2.22. Arrangement of bolts of fastening of a forward cover of a drive of camshafts


Establish a prop under the engine. Remove the right arm of an engine mount. Remove a forward cover of a drive of camshafts (fig. 2.22) and take a cuff of a cranked shaft. Be convinced available labels on links of a chain and an asterisk. In the absence of labels put them with paint. Remove the plug of a drive of the oil pump and an asterisk of a cranked shaft with their shponka. Remove an uspokoitel of a chain of a drive of the mechanism of a gazoraspredeleniye and a chain.
Check a technical condition of chains and asterisks. Wear of teeths, chips of rollers, wear of a chain are the basis for replacement of details. Be convinced of lack of considerable wear of a working surface of boots of natyazhitel. By means of chemical solvents and razmyagchitel clear of the remains of the removed laying of a surface of the block of cylinders and a head. Do not use sharp subjects which can put damage to aluminum surfaces of details. Watch, that extraneous subjects and the remains of laying did not get to engine pipelines. Check planeness of a head of the block of cylinders and the block of cylinders. Clean by means of a tap carving openings in the block of cylinders for bolts of fastening of a head of the block of cylinders and blow them the compressed air.

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4.7. Head of the block of cylinders of GA14DE and GA16DE engines
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4.7.2. Installation of a head of the block of cylinders