Assembly of conrod and piston group. AZLK 2141 (Muscovite)
Service and car repairs of 2141 - the Muscovite.
1. General data
2. Engines
3. Power supply system
4. Cooling system
4.1. Thermostat
4.2. Thermal mode of the engine
4.3. Installation of ignition on the engine of fashion. 2106
4.4. Installation of ignition on engines of fashion. 331 and 3317
4.5. Installation of the drive of the distributor of ignition on engines of fashion. 331 and 3317
4.6. Replacement of spark plugs
4.7. Possible malfunctions of engines, their reasons and methods of elimination
4.8. Features of repair of the engine of fashion. 2106
4.8.1. Features of dismantling of the engine of fashion. 2106
4.8.2. Features of assembly of the engine of fashion. 2106
4.8.3. Assessment of technical condition of knots and systems of the engine of fashion. 2106
4.8.4. Conrod and piston group
4.8.4.1. Selection of the piston to the cylinder
4.8.4.2. Control of mass of pistons
4.8.4.3. Vypressovka of a piston finger
4.8.4.4. Check of a gap between the piston and a finger
4.8.4.5. Check of gaps between flutes of the piston and piston rings
4.8.4.6. Assembly of conrod and piston group
4.8.5. Bent shaft and flywheel
4.8.6. Oil pump of the engine
4.8.7. Head of the block of cylinders and valvate mechanism
4.8.8. Camshaft and its drive
4.9. Features of repair of the engine of fashion. 331, 3317 and 3313
5. Transmission
6. Running gear
7. Tires, wheels
8. Steering
9. Brake management
10. Body
11. Electric equipment
12. Electrical circuitries
 










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4.8.4.6. Assembly of conrod and piston group


Installation of a piston finger of the engine of fashion. 2106 on adaptation, for its press fitting in the piston and a head of a rod

1 – adaptation roller;

2 – piston finger;

3 – guide;

4 – persistent screw

Press fitting of a piston finger in the top head of a rod of the engine of fashion. 2106

1 – adaptation;

2 – piston finger.

The piston has to lean on a rod head in the direction specified by an arrow.

As the finger is implanted into the top head of a rod with a tightness, the rod needs to be heated to 240 °C for expansion of its head.

To place rods in the furnace which is already heated to 240 °C for 15 min. the top heads sent to inside furnaces.

For the correct connection of a finger with a rod it is necessary to press a finger as soon as possible as the rod is cooled quickly and after cooling of a rod it will be impossible to change position of a finger.

The finger should be prepared for assembly in advance, having put on it the roller 1 (fig. Installation of a piston finger of the engine of fashion. 2106 on adaptation, for its press fitting in the piston and a head of a rod) devices, having established on the end of this roller a guide 3 and having fixed it by the screw 4. The screw should be tightened leaky that there was no its jamming at expansion of a finger from contact with a heated rod.

Quickly to clamp the rod taken from the furnace in a vice. To put on the piston a rod, watching that the opening under a finger coincided with an opening of the top head of a rod. Adaptation 1 (fig. A press fitting of a piston finger in the top head of a rod of the engine of fashion. 2106) to push the fixed piston finger in an opening of the piston and the top head of a rod so that the zaplechik of adaptation adjoined to the piston.

During this operation the piston has to nestle a lug on the top head of a rod in the direction of a finger press fitting (it is shown by an arrow on (fig. A press fitting of a piston finger in the top head of a rod of the engine of fashion. 2106), what will allow a finger to reach the correct position.


Prevention

The piston has to connect to a rod so that the tag "П" on the piston was from an opening exit for oil on the lower head of a rod.

After cooling of a rod to oil a finger engine through openings in piston lugs.

At installation of piston rings their locks to have through 120 °.

The rod is processed together with its cover and therefore covers of rods are not interchanged. That not to mix them at assembly, on a rod and the cover corresponding to it number of the cylinder in which they are established is branded. At assembly of figure on a rod and a cover have to be on the one hand.




4.8.4.5. Check of gaps between flutes of the piston and piston rings

4.8.5. Bent shaft and flywheel