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
+ 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





3.10. Heads of the block of cylinders

GENERAL INFORMATION

Head of the block of cylinders of the engine of 2,2 l


Sequence of a tightening of bolts of fastening of a head of the block of cylinders


Sequence of a tightening of bolts of fastening of a head of the block of cylinders on the engine of 1,8 l

Removal

PERFORMANCE ORDER
1. Remove pressure in fuel system and a weight wire from the accumulator.
2. Merge cooling liquid from the cooling system of the engine and unscrew spark plugs.
3. Take off a gear belt, pulleys of a camshaft and internal casings of a gear belt. Uncover heads of the block of cylinders and assembly of yokes (the l engine 1,8 and 2,2) or camshafts (the engine of 2,5 l).
4. Disconnect exhaust pipes from heads of the block of cylinders.
5. Remove an inlet collector.
6. Unscrew forward support of the engine and, using a jack, through a board lift the engine.
7. On the left side of the engine unscrew a pipe of system of repeated burning of exhaust gases.
8. Working in sequence, return shown on rice. Sequence of a tightening of bolts of fastening of a head of the block of cylinders, weaken bolts of fastening of a head of the block of cylinders on 1/3 turns for each pass before full unscrewing of bolts.
9. Remove a head of the block of cylinders.

Installation

PERFORMANCE ORDER
1. The interfaced surfaces of a head and the block of cylinders have to be absolutely pure. For their cleaning use a firm plastic or wooden scraper. When cleaning be careful as it is very easy to damage an aluminum alloy.
2. Check that the deposit did not get to oil and water canals. It is especially important for the lubrication system as the deposit can block supply of oil to engine components.
3. If necessary clear channels, check the interfaced surfaces of a head and the block of cylinders for existence of notches, deep scratches and other damages.
4. Clear openings under bolts in the block of cylinders. Screwing up of a bolt in the opening filled with oil can break off the block because of hydraulic pressure.
5. Install new laying of a head of the block of cylinders on adjusting pins in the block of cylinders.
6. Establish a head on the block of cylinders of the engine.
7. Grease a carving of bolts of fastening of a head of the block of cylinders with a thin layer of engine oil.
8. Establish bolts of fastening of a head of the block of cylinders and tighten them the demanded moment in some stages in the sequence presented on rice. Sequence of a tightening of bolts of fastening of a head of the block of cylinders, Sequence of a tightening of bolts of fastening of a head of the block of cylinders on the engine of 1,8 l.
9. Further installation is made in sequence, the return to removal.