Peugeot405
1. The maintenance instruction
2. Maintenance service
3. Engines
    3.1. Petrol engines
      3.1.1. A technical characteristics
       3.1.2. Engine repair
          3.1.2.1. The repair which is not demanding removal of the engine
          3.1.2.2. Engine removal
         3.1.2.3. Engine installation
         3.1.2.4. Engine dismantling
          3.1.2.5. Engine assemblage
            3.1.2.5.1. Clearing and check of details
            3.1.2.5.2. Шатунные and radical loose leaves
            3.1.2.5.3. Definition of the size of loose leaves
            3.1.2.5.4. Check of a working backlash in bearings of a cranked shaft
            3.1.2.5.5. A cranked shaft
            3.1.2.5.6. Knot a rod-piston
            3.1.2.5.7. Assemblage of knot a rod-finger-piston
         3.1.2.6. Start of the engine after major repairs
    3.2. Diesel engines
    3.3. The petrol engine 1,4 дм3
    3.4. Ignition system
4. Fuel system
5. Systems of greasing, cooling
6. Release system
7. Coupling
8. Transmissions
9. Power shafts
10. A steering
11. Suspension brackets
12. Brake system
13. A body
14. An electric equipment


3.1.2.5.6. Knot a rod-piston
THE GENERAL DATA

The krivoshipno-shatunnyj mechanism

1 – a cranked shaft,
2 – loose leaves of radical bearings,
3 – persistent half rings of a cranked shaft,
4 – a flywheel,
5 – an asterisk of a drive of the oil pump,
6 – a gear pulley of a drive timing,
7 – клиновой a pulley, 		8 – a rod,
9 – the piston,
10 – piston rings,
11 – loose leaves of a rod,
12 – a piston finger,
13 – a bolt of a cover of a rod

Extraction of a piston finger on a press on engines with 8 valves


Removal of a lock ring of a piston finger on engines with 16 valves

Extraction of a piston finger on engines with 16 valves


Deterioration of pistons and piston rings can be found out at occurrence of signs of the raised expense of oil and a low compression that is sometimes connected with deterioration of cylinders.

Other sign of deterioration of the piston is the knock of the piston similar to noise from outside of a cranked shaft which needs to be distinguished from knock of bearings. It is possible to listen to it accurately on small turns of the engine in the absence of loading (for example, in an idling mode), it is audible much less at increase of turns of the engine. Deterioration of the piston usually arises around a skirt or the bottom end face of the piston.

PERFORMANCE ORDER
1. To remove by turns the top sealing ring, an average sealing ring and маслосъемное a ring. For removal of rings to insert under a ring thin steel plates (it is possible щупы) in several places in regular intervals on perimetre of the piston and on plates to shift a piston ring from the piston.
2. To check up backlash size in the lock of rings. For this purpose consistently to insert all rings from the top party into a working sleeve of the cylinder. The turned piston to push a ring downwards in the cylinder on depth of 15 mm and щупом to measure a backlash in the ring lock. Backlashes in the ring lock are not regulated, and at increase in a backlash over admissible the ring is subject to replacement.
3. To disassemble knots a rod-piston, getting piston fingers by means of a press (Extraction of a piston finger fig. see a press on engines with 8 valves and fig. Extraction of a piston finger on engines with 16 valves).
4. For extraction and installation of piston fingers it is necessary to use special equipment, namely, directing and an arm. On a finger before запрессовкой to establish directing adaptation. Does not follow, however, крепить a finger on a shaft to запрессовки, it is necessary to leave a backlash about 0,1 mm.
5. On engines with 16 valves at piston and rod installation to provide their correct mutual position (and – a label on the basis of a rod).