Check of a technical condition and installation of a head of the block of cylinders. Nissan Almera (from 1995 to 1999 of release)
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
4.8. Head of the block of cylinders of the SR20DE engine
4.8.1. Removal and installation of a cover of a head of the block of cylinders
4.8.2. Removal and installation of a forward cover of a drive of the mechanism of a gazoraspredeleniye
4.8.3. Removal and installation of a chain of a drive of camshafts
4.8.4. Removal of a head of the block of cylinders
4.8.5. Check of a technical condition and installation of a head of the block of cylinders
4.8.6. Removal, check of a technical condition and installation of camshafts
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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4.8.5. Check of a technical condition and installation of a head of the block of cylinders

The manufacturer recommends to carry out measurement of bolts of fastening of a head of the block of cylinders to define need of their replacement. It is necessary to measure length of each bolt (without a washer) from the head basis till the end of a core. If all bolts are shorter than 158,2 mm, they can be used repeatedly. If there are the bolts which length exceeds 158,2 mm, it is necessary to replace all bolts of fastening of a head of the block of cylinders in a set. Surfaces of interface of a head of the block of cylinders with the block of cylinders should be carefully cleared before head installation. Remove by means of a wooden or plastic scraper the remains of old laying and a deposit. Clear the bottoms of pistons, accepting necessary precautionary measures that the deposit did not get to canals of greasing and circulation of cooling liquid.
Check surfaces of interface of the block of cylinders with a block head: on them there should not be забоин, deep scratches and other damages. If insignificant, them it is possible to eliminate damages by means of a file. If damages considerable, прошлифуйте being interfaced surfaces on the machine. It is necessary to check also planeness of surfaces of interface to the help of a ruler.
Before installation wipe pure rags of a surface of interface of a head of the block of cylinders with the block. Be convinced that two adjusting pins are established on labels in the block of cylinders. Establish new laying on the block of cylinders. Establish together with the assistant a head of the block of cylinders assembled on the block of cylinders on adjusting pins. Apply a thin film pure engine oil on a carving part of bolts and under heads of bolts of fastening of a head of the block of cylinders. Put on bolts of a washer and establish bolts in the corresponding openings. Wrap bolts by hand.

Fig. 2.56. Order of an inhaling of bolts of a head of the block of cylinders


Tighten bolts in the sequence specified fig. 2.56, the moments of an inhaling of carving connections set in the appendix.
It is recommended to use a goniometer at performance of an inhaling of bolts. Having finished an inhaling of the main bolts of fastening of a head of the block of cylinders, to tighten bolts in diameter of 6 mm on a forward part of a head of the block of cylinders. Be convinced of the correct laying of electricity cables, connect sockets of the distributor, the coil of ignition and the ignition block. Fix plaits of wires collars and brackets. Connect "weight" wires to a head of the block of cylinders and a collector and tighten fastening bolts.
On engines with the distributed injection of fuel of release till 1993 establish a bolt of fastening of a branch pipe of system of cooling on the block of cylinders and tighten it. Establish a starter. Connect branch pipes of system of cooling to unions and fix them by means of collars. Attach and lay on a place all wires and hoses.
Check the wires suitable to an inlet collector and units of a power supply system of the engine by fuel. Establish arms of fastening of an inlet collector.
Connect and fix a cable of management of supply of fuel. Connect a reception pipe of the exhaust silencer to a final collector. Establish the air filter and an air branch pipe. On cars with an automatic transmission connect and lay a cable of compulsory inclusion of a low gear. Establish into place camshafts.

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4.8.4. Removal of a head of the block of cylinders
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4.8.6. Removal, check of a technical condition and installation of camshafts