Subaru Legacy

Since 1990-1998 of release

Repair and car operation



Subaru Legasi
+ 1.1. Identification numbers
+ 2. Maintenance service
- 3. Engines
   3.1. Technical characteristics
   3.2. Operations on repair of the engine established in the car
   3.3. The top dead point of the first cylinder
   3.4. A cover of a head of the block of cylinders
   3.5. An inlet collector
   + 3.6. A gear belt and pulleys
   3.7. Replacement of a forward sealing ring of a cranked shaft
   3.8. Replacement of sealing rings of camshafts
   3.9. Camshafts and pushers
   3.10. Heads of the block of cylinders
   3.11. The oil pallet
   3.12. The oil pump
   3.13. The Flywheel / a drive plate
   3.14. Replacement of a back sealing ring of a cranked shaft
   3.15. A suspension bracket of the power unit
   - 3.16. Engine major repairs
      3.16.1. Technical characteristics
      3.16.2. Compression check
      3.16.3. Check of the engine by means of the vacuum gauge
      3.16.4. Recommendations about engine removal
      3.16.5. Engine removal
      3.16.6. Sequence of dismantling of the engine
      3.16.7. Dismantling of a head of the block of cylinders
      3.16.8. Clearing and survey of a head of the block of cylinders
      3.16.9. Assemblage of a head of the block of cylinders
      3.16.10. Removal of pistons
      3.16.11. Division of sections of blocks of cylinders
      3.16.12. Removal of a cranked shaft from rods
      3.16.13. The block of cylinders of the engine
      3.16.14. Хонингование cylinders
      3.16.15. Rods
      3.16.16. A cranked shaft
      3.16.17. Survey radical and шатунных bearings
      3.16.18. Engine balance of assembly at major repairs
      3.16.19. Survey of pistons
      3.16.20. Check of working backlashes шатунных bearings
      3.16.21. Check of working backlashes of radical bearings of a cranked shaft
      3.16.22. Assemblage of sections of the block of cylinders
      3.16.23. Installation of piston rings
      3.16.24. Installation of pistons
      3.16.25. Engine installation
      3.16.26. Start of the engine after major repairs
+ 4. Heating, ventilation
+ 5. Fuel system
+ 6. An exhaust system
+ 7. Systems of start, ignition
+ 8. Transmissions
+ 9. Coupling, shaft
+ 10. Brake system
+ 11. A suspension bracket
+ 12. A steering
+ 13. A body
+ 14. An electric equipment


3.16.17. Survey radical and шатунных bearings
THE GENERAL DATA

Even besides that radical and шатунный bearings are subject to replacement at engine major repairs, they are necessary for examining carefully as they can give the valuable information concerning an engine condition.

Bearing failure can occur because of a lack of greasing, presence of a dirt or other alien particles, an engine or corrosion overload. Irrespective of the reason of failure of the bearing the reason which has caused an exit of the bearing out of operation before the engine should be eliminated will repeatedly gather.

At survey of bearings remove them and spread out in the same order as they have been established on the engine. It will allow to define a corresponding neck of a cranked shaft and will facilitate search of malfunctions.

Alien particles can get to the engine various ways. Metal particles can be in engine oil as a result of normal deterioration of the engine. Small particles together with engine oil can get to bearings and easily take root into a soft material of the bearing. The big particles, getting to the bearing, will scratch the bearing or a neck of a cranked shaft. The best prevention of failure of the bearing for this reason, carefully clear all internal surfaces of the engine and keep them clean at engine assemblage. Frequent and regular replacement of oil with the filter Is recommended also.

Insufficient greasing of necks of a cranked shaft can be caused many different reasons, such as an oil heat, an overload of the engine and oil leak.

The manner of driving by the car also influences durability of the bearing. Completely open throttle заслонка at low turns of the engine creates high loading on bearings and expression from a zone of contact of an oil film. These loadings lead to occurrence of cracks in a working part of the bearing that weakens the bearing and can lead to a separation of an antifrictional layer from a steel basis.

Movement on short distances leads to corrosion of bearings because the engine does not leave on the stabilised working temperature at which water steams and corrosion gases leave. These steams and gases, being condensed in engine oil, form acid and a deposit. Acid together with engine oil gets to bearings and corrosion of bearings begins.

Wrong selection of bearings at engine assemblage also leads to failure of bearings. The bearings established with a preliminary tightness, leave an insufficient working backlash of the bearing therefore decreases or there is no butter layer for greasing.