VW Passat repair


+ 1. Ekspluatatsiiya of the car
+ 2. Maintenance
- 3. Engines
   + 3.1. Petrol engines of configuration of R4
   - 3.2. Petrol engine of configuration of VR6
      3.2.1. Technical characteristics
      3.2.2. General information
      3.2.3. Check of a technical condition of the engine
      3.2.4. Removal and engine installation
      3.2.5. Removal and installation of a head of the block of cylinders
      3.2.6. Repair of a head of the block of cylinders
      3.2.7. Pistons and rods
      3.2.8. Cranked shaft
      3.2.9. Replacement of epiploons of a cranked shaft
      3.2.10. Flywheel
      3.2.11. Drive of the gas-distributing mechanism
      3.2.12. Intermediate shaft
      3.2.13. Removal and installation of the oil pallet
      3.2.14. Oil pump
      3.2.15. Water pump
   + 3.3. Diesel engines
+ 4. Cooling system
+ 5. Power supply system
+ 6. Ignition system
+ 7. Coupling
+ 8. Transmission
+ 9. Drive of forward wheels
+ 10. Suspension brackets
+ 11. Steering
+ 12. Brake system
+ 13. Wheels and tires
+ 14. Systems of heating, ventilation and conditioning
+ 15. Electric equipment
+ 16. Body
+ 17. Electric circuits


Repair B3-B4/Passat B3-B4 Volkswagen Passat>> Engines>> Petrol engine of configuration of VR6>> Pistons and rods
Removal of shatunno-piston group is carried out in the following order:
– remove a head of the block of cylinders (see подразд. 3.2.5);
– remove the oil pallet and the oil pump;
– establish the cylinder No. 1 piston in NMT turn of a cranked shaft;
– before removal of a cover and dismantling of a rod and the piston note the provision of a rod and a rod cover concerning the cylinder, put on the piston bottom an arrow directed to a forward part of the engine, for the subsequent correct installation of the piston;
– unscrew nuts of fastening of a cover of a rod and uncover;
– вытолкните the piston with a rod from the cylinder the wooden handle of a hammer;
– remove the remained pistons with rods assembled, having executed the above described operations;
– check a finger existence of development of the top part of a wall of the cylinder;
– remove lock rings of a piston finger from piston flutes;
– выпрессуйте a piston finger from the piston by means of a special opravka;

Fig. 3.51. Removal and installation of the piston
rings


– remove piston rings by means of a stripper (fig. 3.51) or old oil щупа (see подразд. 3.1.13).

       PREVENTION
Always remove piston rings towards the piston bottom.

Installation of shatunno-piston group is carried out in the following order:
– heat up the piston in hot water;
– establish in the piston a rod, having arranged it according to earlier established labels, and press in it a piston finger;
– establish piston rings by means of a stripper (see fig. 3.51 ) or old щупа (see подразд. 3.1.13). On the established piston rings of an inscription of "TOP" or «OBEN» should be directed to the piston bottom;
– establish the corresponding shatunny loose leaf in the bottom head of a rod;
– arrange locks of piston rings on the cylinder No. 1 piston at an angle 120 ° to each other;
– turn a cranked shaft to a corner corresponding to NMT of the piston of the cylinder No. 1;
– grease with fresh engine oil of a wall of the cylinder, the piston, the loose leaf of the bottom head of a rod and a shatunny neck of a cranked shaft;

Fig. 3.35. Piston installation with a rod assembled in the cylinder: 1–block of cylinders; 2–the adaptation for compression of piston rings; 3–piston


establish the piston with a rod assembled in the cylinder No. 1, compressing piston rings the special adaptation (see fig. 3.35 ).
– insert the loose leaf into a cover of a rod and grease it with engine oil;
– establish a rod cover according to earlier put labels;
– tighten nuts of fastening of a cover of a rod the moment of 30 N · m, then tighten them on a corner 180 °;
– turn a cranked shaft and be convinced that it rotates without breakthroughs;
– establish other pistons with rods assembled;
– establish the oil pump and the oil pallet;
– establish a head of the block of cylinders.

       PREVENTIONS
1. Everything is necessary to replace pistons at once in a set.
2. At wear of one of cylinders to grinding subject all cylinders.








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