Subaru Legacy

since 1990-1998 release

Repair and operation of the car



Subaru of Legasi
+ 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 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. Oil pallet
   3.12. Oil pump
   3.13. Drive flywheel / plate
   3.14. Replacement of a back sealing ring of a cranked 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 cranked 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. Cranked shaft
      3.16.17. Survey of radical and shatunny bearings
      3.16.18. Balance of assembly of the engine at capital repairs
      3.16.19. Survey of pistons
      3.16.20. Check of working gaps of shatunny bearings
      3.16.21. Check of working gaps of radical bearings of a cranked 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


3a942d17 .


3.16.8. Cleaning and survey of a head of the block of cylinders

Cleaning

PERFORMANCE ORDER
1. Remove the remains of old laying from a head of the block of cylinders.
2. Clear a deposit from combustion chambers, then wash up a head in the corresponding solvent.
3. Clear of carbonaceous deposits of the valve, it is possible even with application of a wire brush.
4. Clean a carving in openings for bolts the corresponding tap. Then clear openings compressed air, in them should not remain foreign particles.
5. Clear a carving of hairpins of inlet and final collectors a wire brush.
6. Clear crackers of a spring and a nest of springs solvent and carefully dry up them. Work at the same time only with details of one valve not to mix them.

Check

HEAD OF THE BLOCK OF CYLINDERS
PERFORMANCE ORDER
1. Carefully examine a head of the block of cylinders on existence of cracks and other damages. In the presence of cracks the head is subject to replacement.
2. Using a metal ruler and the probe, check planeness of the interfaced surface of a head of the block of cylinders. If not planeness exceeds admissible limits, it is necessary to pereshlifovat a head, thus its height has to conform to technical requirements.
3. Check a condition of saddles of valves. If they are burned, worn-out or have defects, they need to be replaced. If wear of a saddle of the valve is insignificant, they need to be ground in.
4. Check the directing plugs of valves for wear, inserting into them a core of the valve and moving it to the parties. Movement has to be insignificant.
5. If movements are excessive, take the valve and measure diameter of a core of the valve.
6. If necessary replace the valve.
7. If the core of the valve is not worn-out, so the directing plug which needs to be replaced is worn-out. Replacement of the directing plugs of valves should be made at service station.

VALVES

PERFORMANCE ORDER
1. Check a plate of each valve for local corrosion, prozhog, cracks and the general wear.
2. Check a valve core for wear and a bend. Check wear of an end face of a core of the valve. With any defects the valve is subject to replacement.
3. Measure by a micrometer diameter of a core of the valve in several places on core length. Any essential distinction in the obtained data indicates wear of a core of the valve and obligatory replacement of the valve.
4. Measure width of an edge of a plate of the valve. If width of an edge of a plate of the valve of less admissible limit, the valve is subject to replacement.
5. If valve are in a satisfactory condition, they have to be inserted into the places and are ground in. If plates of valves or a saddle are strongly worn-out, before their grinding in it is necessary to process mechanically or even to replace.
6. Grinding in of valves is carried out as follows.
7. Establish a head of the block of cylinders by combustion chambers up on wooden whetstones.
8. Grease with paste for grinding in of a place on a plate of the valve and a valve saddle. Install the valve on a place and on a plate of the valve establish a sucker with the wooden holder.
9. Rotating the valve a sucker in different directions, grind in the valve, and it is periodically necessary to lift the valve for redistribution of pritirochny paste.
10. If rough pritirochny paste is used, grinding in needs to be made before emergence of a uniform opaque surface on a saddle of the valve and the valve. Then erase the used composition of paste and repeat process of grinding in with fine paste.
11. Make grinding in before emergence of easy gray opaque color.
12. Carefully remove traces of pritirochny paste, using the corresponding solvent.

VALVE ELEMENTS

PERFORMANCE ORDER
1. Check valve springs for damage signs.
2. Measure spring length in a free state.
3. Establish springs to one of end faces on a bed, check a spring axis deviation from the vertical plane.
4. In case of damage of one of springs it is necessary to replace all springs in a set.
5. Replace maslootrazhatelny caps irrespective of their state.