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
4.1. Removal and installation of the power unit
4.2. Dismantling and assembly of the engine
4.3. Block of cylinders
4.3.1. Check of technical condition and repair of the block of cylinders
4.4. Conrod and piston group
4.5. Bent shaft and flywheel
4.6. Gas distribution 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
4.9. Cooling system
4.10. Lubrication system
4.11. System of production of the fulfilled gases
4.12. Power supply system
4.13. Complex Control System of the Engine (CCSE)
5. Diesel engines
6. Transmission
7. Running gear
8. Steering
9. Brake system
10. Electric equipment
11. Body
12. Appendices
13. Schemes of electric equipment
 









4-3-blok-cilindrov.html

4.3. Block of cylinders



Fig. 2.6. Details of the block of cylinders and krivoshipno-conrod mechanism of the SR20DE engine:
1 — a gas distribution mechanism drive chain cover; 2 — an arm of fastening of the generator;
3 — the water pump; 4 — the block of cylinders; 5 — the holder of a back cuff of a bent shaft; 6 — persistent half rings; 7 — a flywheel; 8 — a back cover; 9 — a bent shaft; 10 — an insert of the radical bearing; 11 — a cover of the radical bearing; 12 — a bed of radical bearings of a bent shaft;
13, 14 — the maslootrazhatelny screen; 15 — an aluminum case; 16 — a maslouspokoitelny guard;
17 — a steel stamped case; 18 — a stopper of a drain opening; 19 — a cover; 20 — a rod and a cover of a rod; 21 — inserts of the lower head of a rod; 22 — lock rings; 23 — a piston finger; 24 — the plug of the top head of a rod; 25 — the piston; 26 — piston rings; 27 — an oil receiver with the filter of the oil pump; 28 — a sealing ring


Fig. 2.7. Measurement of height of the block of cylinders


Fig. 2.5. Details of the block of cylinders and krivoshipno-conrod mechanism of GA14DE and GA16DE engines: I \with the mechanical transmission; II \with the automatic transmission;
1 — the block of cylinders; 2 — the holder of a back cuff of a bent shaft; 3 — a drain stopper of cooling liquid of the block of cylinders; 4 — an arm; 5 — inserts of radical bearings of a bent shaft; 6 — persistent half rings of a bent shaft; 7 — a bent shaft; 8 — covers of radical bearings of a bent shaft; 9 — the plug of the drive of the oil pump; 10 — an asterisk of a bent shaft;
11 — segment splines; 12 — a cover of the lower head of a rod;
13 — connecting rods; 14 — a rod; 15 — lock rings;
16 — a piston finger; 17 — the piston; 18 — an oil scraper ring; 19 — the lower compression ring; 20 — the top compression ring; 21 — a back cuff of a bent shaft; 22 — a back cover; 23 — a flywheel; 24 — the lower cover; 25 — a back cover; 26 — the conducted disk


The block of cylinders pig-iron, is cast for a single whole with cylinders (fig. 2.5 and 2.6). Cylinders on diameter are divided into three dimensional groups (tab. 2.1). Nominal height of the block of cylinders of GA engines makes And = 213,95 — 214,05 mm (fig. 2.7).

Table 2.1 Dimensional groups of cylinders
Diameter of the piston, mm
Engine model
GA14DE
GA16DE
SR20DE
1 - dimensional group
73,60-73,61
76,00-76,01
86,00-86,01
2nd dimensional group
73,61-73,62
76,01-76,02
86,01-86,02
3rd dimensional group
73,62-73,63
76,02-76,03
86,02-86,03


In the SR20DE engine the cast bed of radical bearings providing additional rigidity of the block of cylinders and more difficult design of the oil pallet consisting of aluminum and steel cases and a maslootrazhatel are applied.

Fig. 2.8. Marking of dimensional groups of diameters of cylinders on the block of GF14DE and GA16DE engines: 1 — numbers of dimensional groups of diameters of cylinders; 2 — numbers of dimensional groups (categories of the sizes) of inserts of bearings of a bent shaft; 3 — number of dimensional group of diameter of the cylinder No. 1; 4 — number of dimensional group (category of the size) of inserts of the bearing No. 1


Marking of dimensional groups of diameter of cylinders is applied on the block of cylinders (fig. 2.8 and 2.9)

Fig. 2.9. Marking of group of diameter of cylinders on the surface of the block of cylinders of the SR20DE engine



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4.3.1. Check of technical condition and repair of the block of cylinders







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