Nissan Terrano 2 from 1985 to 1999
1. Maintenance instruction and to maintenance
2. Maintenance of the car
3. Четырехцилиндровыв engines
4. VS engines
5. All engines
5.1. General information
5.2. Check of a compression in engine cylinders
5.3. Dismantle of the power unit - a security measure
5.4. The engine - removal and installation
5.5. Capital repairs of the engine - general information
5.6. Restoration of the engine - an alternative
5.7. Capital repairs of the engine - a dismantling order
5.8. A head of the block of cylinders - dismantling.
5.9. Head of the block of cylinders cleanings and check of a state
5.10. A head of cylinders - assembly
5.11. Conrod and piston group dismantle
5.12. The crankshaft - dismantle
5.13. The block of cylinders - cleaning
5.14. The block of cylinders - check of a state
5.15. Rods and pistons - check of a state
5.16. The crankshaft - check of a state
5.17. Radical and conrod bearings - check and selection
5.18. Capital repairs of the engine - an assembly order
5.19. Piston rings - installation
5.20. The crankshaft - installation and check of gaps of radical bearings
5.21. A back epiploon - installation
5.22. Rods and pistons - installation and check of gaps in conrod bearings
5.23. Launch of the engine after repair and a running in
6. Cooling systems, heating, ventilation and conditioning
7. Fuel and exhaust systems
8. System of electric equipment of the engine
9. System of decrease in toxicity of exhaust gases
10. Mechanical transmission
11. Automatic transmissions
12. Coupling driveshaft and back bridge
13. A running gear of cars with a wheel formula 4x4
14. Brake system
15. Suspension brackets and steering
16. Body and elements of finishing
17. System of electric equipment


5.15. Rods and pistons - check of a state

1. Accurately clear pistons of a deposit and carefully remove rings.
2. Remove a deposit from flutes of piston rings (photo).
3. Wash out pistons and rods solvent, carefully clean drainage openings in flutes of the piston and an opening in a rod (photo).
4. If traces of considerable wear are absent and if boring of cylinders is not required, then pistons should not be changed. Normal wear is shown in the form of traces of uniform vertical development on the rubbing surface of the piston and in the form of small weakening of landing of the top compression ring. Nevertheless, replacement of piston rings at capital repairs of the engine is obligatory.

15.2а Очистите канавки поршней с помощью приспособления...
15:2á Clear flutes of pistons by means of adaptation...

14.4б Маркировка размерной группы поршней на блоке V6
14:4í Marking of dimensional group of pistons on the V6 block

5. Carefully check existence of cracks on a piston skirt, on lugs of a piston finger and on airfields of piston rings.
6. If on the piston chips and teases are observed, then it indicates a frequent overheat of the engine. In this case careful check of lubrication systems and cooling is required. The burn-out in the bottom of the piston demonstrates operation of the engine with the wrong installation of the moment of ignition. At the edges as a rule abnormal combustion (detonation) is the reason of an obgoraniye of the bottom of the piston. If the specified defects are found, then it is necessary to find their reason and to eliminate.
7. Corrosion of the piston in the form of small poles (pitting) demonstrates penetration into the combustion chamber (and also in a crankshaft case) cooling liquid.
8. Measure a gap between a flute and a new ring (photo). If the gap exceeds the set limit, then the piston should be replaced.
9. Check a gap between the piston and the cylinder, having measured diameter of the cylinder (see above) and diameter of the piston from this cylinder (photo). If the gap exceeds the set limit, then the block of cylinders is subject to boring, and pistons and rings should be replaced repair.
10. Check a gap between a piston finger and a head of a rod for what shake the piston and a rod in opposite directions. If a side play notable, then an opening under a finger it is necessary to develop and establish a new finger.

15.2б ... или старым поршневым кольцом
15:2í... or old piston ring

15.3 Отверстие для отвода масла в шатуне
15.3 An opening for removal of oil in a rod

11. Repair of pistons and rods is carried out in car service.
12. Check existence on rods of cracks and other damages. Uncover conrod bearings, get bearings, wipe landing surfaces on a cover and on a rod, check existence of cracks, scratches and zadir. After check collect a rod, having installed into place bearings, tighten nuts by hand.

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5.14. The block of cylinders - check of a state
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5.16. The crankshaft - check of a state