Removal and installation of a head of the block of cylinders. Nissan Almera (from 1995 to 1999 release)
Service of Nissan Almera from 1995 to 2000 in N15 body
1. General information
2. General requirements to car repairs
3. Operation and maintenance of the car
4. Petrol engines
5. Diesel engines
5.1. General information
5.2. Block of cylinders and krivoshipnoshatunny mechanism
5.3. Gas distribution mechanism
5.3.1. Constructive osobennostia
5.3.2. Removal and installation of the gear drive of the mechanism of gas distribution
5.3.3. Removal and installation of a head of the block of cylinders
5.3.4. Dismantling, check of technical condition and repair of a head of the block of cylinders
5.3.5. Check of a hydraulic pusher
5.4. Cooling system
5.5. Lubrication system
5.6. Power supply system
5.7. Control system of the CD20 engine
5.8. Control system of the CD20E engine
5.9. System of production of the fulfilled gases
6. Transmission
7. Running gear
8. Steering
9. Brake system
10. Electric equipment
11. Body
12. Appendices
13. Schemes of electric equipment
 









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5.3.3. Removal and installation of a head of the block of cylinders


Fig. 3.18. Order of an inhaling of bolts of fastening of a head of cylinders


Disconnect a wire from the "minus" plug of the rechargeable battery. Put a forward part of the car on support. Merge liquid from the cooling system. Remove the right wheel, its mudguard and the lower board of protection of a case of the engine. Disconnect a branch pipe of the cooling system and an air duct from an inlet collector. Under the car remove a reception pipe of the muffler and remove laying. Remove the heat-insulating screen of a final collector, a final collector and the inlet pipeline, remove their laying. Take off a camshaft drive belt, a belt of the TNVD drive and remove fuel-supply lines of high pressure. Disconnect a drain fuel-supply line from a nozzle of the fourth cylinder. Separate electrosockets of devices and the knots located in a zone of removal of a head of the block of cylinders, having noticed their arrangement. On the CD20E engine separate the socket of the sensor of raising of a needle from a nozzle of the first cylinder. Block from rotation by means of special adaptation the cogged pulley of the camshaft from TNVD, then turn off a bolt of its fastening and remove the cogged pulley of the camshaft. Remove details of fastening of an internal cover of a belt of the TNVD drive, a tension roller of a belt of the TNVD drive and a cover of a head of the block of cylinders. Gradually weaken and turn off bolts of fastening of a head of the block of cylinders in the sequence, return specified fig. 3.18.
Check a detachment from a head of the block of cylinders of all wires, sockets and pipelines. By means of lever adaptation separate a head from the block of cylinders and remove it, having carefully taken out the end of the camshaft from an internal cover of the TNVD drive. Establish a head on a wooden surface and remove laying.
Before installation of a head of the block of cylinders on the block clear the surfaces of interface of a head and the block, using special detergents for dissolution of the remains of old laying. Do not apply sharp objects which it is possible to damage privalochny surfaces to this purpose. Check a condition of privalochny surfaces. On them there should not be scratches or other outer defects. Install the camshaft in the provision of an initial corner of an advancing of injection. At the same time the tag on gear to a pulley of the camshaft has to be in situation "3 hours". Restore a carving in openings for bolts of fastening of a head in the block of cylinders by means of a tap of the corresponding diameter, clear of dirt and dry. Check existence of adjusting plugs. Make sure that the bent shaft is in the provision of an initial corner of an advancing of injection, and a spline on cranked to a shaft — in situation "12 hours". Check by means of a ruler and a set of probes planeness of a privalochny surface of a head of the block of cylinders. Establish laying of the same thickness, as removed if the privalochny surface of a head was not exposed to grinding. Otherwise when replacing the krivoshipno-conrod mechanism or its details, and also when replacing the block of cylinders it is necessary to measure a vystupaniye of pistons in relation to the privalochny surface of the block of cylinders by means of the indicator to determine thickness of the established laying (see tab. 3.9).

Fig. 3.19. Points of measurement of a vystupaniye of the piston concerning the plane of the block of cylinders


Define average value of a vystupaniye of the piston for each cylinder (Fig. 3.19) and calculate average value for all four cylinders.

Fig. 3.20. Installation of laying of a head of the block of cylinders: 1 — adjusting plugs of a head of the block of cylinders; 2 — marking of thickness of laying


Establish new laying by a tag of "TORAHS" up; direct edge with tags of thickness of laying towards an oil filter (fig. 3.20). Establish into place a head of the block of cylinders. Establish bolts of fastening of a head of the block of cylinders, previously having oiled their carving part and heads. Tighten bolts the set moment in the sequence specified fig. 3.18.
At installation of the block of cylinders replace all earlier removed laying.
Carry out installation of a head of the block of cylinders as it should be, the return to removal, having adjusted at the same time a tension of driving belts of the camshaft and TNVD. Pump over a fuel supply system. Fill in liquid in the cooling system of the engine and remove air from system. Check and adjust if necessary work of TNVD. Check operation of the engine.

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5.3.2. Removal and installation of the gear drive of the mechanism of gas distribution
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5.3.4. Dismantling, check of technical condition and repair of a head of the block of cylinders