Subaru Legacy

since 1990-1998 release

Repair and operation of the car



Subaru Legacy
+ 1.1. Identification numbers
+ 2. Maintenance
- 3. Engines
   3.1. Technical characteristics
   3.2. Operations on repair of the engine installed in the car
   3.3. Top dead point of the first cylinder
   3.4. Cover of a head of the block of cylinders
   3.5. Inlet collector
   + 3.6. Gear belt and pulleys
   3.7. Replacement of a forward sealing ring of a bent shaft
   3.8. Replacement of sealing rings of camshafts
   3.9. Camshafts and pushers
   3.10. Heads of the block of cylinders
   3.11. Oil pallet
   3.12. Oil pump
   3.13. Drive flywheel / plate
   3.14. Replacement of a back sealing ring of a bent shaft
   3.15. Suspension bracket of the power unit
   - 3.16. Capital repairs of the engine
      3.16.1. Technical characteristics
      3.16.2. Check of a compression
      3.16.3. Check of the engine by means of the vacuum gage
      3.16.4. Recommendations about removal of the engine
      3.16.5. Removal of the engine
      3.16.6. Sequence of dismantling of the engine
      3.16.7. Dismantling of a head of the block of cylinders
      3.16.8. Cleaning and survey of a head of the block of cylinders
      3.16.9. Assembly 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 bent shaft with rods
      3.16.13. Block of cylinders of the engine
      3.16.14. Honingovaniye of cylinders
      3.16.15. Rods
      3.16.16. Bent shaft
      3.16.17. Survey of radical and conrod bearings
      3.16.18. Engine balance of assembly at capital repairs
      3.16.19. Survey of pistons
      3.16.20. Check of working gaps of conrod bearings
      3.16.21. Check of working gaps of radical bearings of a bent shaft
      3.16.22. Assembly of sections of the block of cylinders
      3.16.23. Installation of piston rings
      3.16.24. Installation of pistons
      3.16.25. Installation of the engine
      3.16.26. Start of the engine after capital repairs
+ 4. Heating, ventilation
+ 5. Fuel system
+ 6. Exhaust system
+ 7. Systems of start, ignition
+ 8. Transmissions
+ 9. Coupling, shaft
+ 10. Brake system
+ 11. Suspension bracket
+ 12. Steering
+ 13. Body
+ 14. Electric equipment






3.16.23. Installation of piston rings

GENERAL INFORMATION

Arrangement of piston rings on the piston


Arrangement of a tag of R or N on a piston ring

The tag of R or N on a piston ring has to be directed to piston top.

Arrangement of locks of piston rings on the piston


PERFORMANCE ORDER
1. Before installation of new piston rings check a gap in the lock of a piston ring.
2. Arrange pistons and piston rings according to cylinders in which they will work.
3. Establish a piston ring in a piston flute.
4. Measure by an edge of the probe a gap of a piston ring in a piston flute.
5. Install the top sealing ring in the first cylinder and the bottom of the piston push it in the cylinder to the cylinder basis.
6. Using the probe, measure a gap in the lock of a piston ring.
7. Repeat process of measurement with the ring established in the top part of the cylinder and compare results of measurement to technical requirements.
8. Repeat operation of check for each ring in the first cylinder, then for rings in other cylinders.
9. Install piston rings on pistons in the same way, as well as at removal (see rice. An arrangement of piston rings on the piston).
10. First of all the oil scraper ring which consists of three separate elements is established. Establish a dilator of an oil scraper ring in a piston flute, then consistently establish the top and lower oil scraper rings.
11. Establish a compression ring No. 2 so that the tag at an end face was directed up (see rice. An arrangement of a tag of R or N on a piston ring). Do not mix the first and second compression rings as they have various profile.
12. After installation of piston rings on the piston check ease of movement of a piston ring in a piston flute.
13. Put locks of piston rings on the piston as it is shown on rice. An arrangement of locks of piston rings on the piston





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