Opel Omega

since 1993-1999 of release

Repair and car operation



Opel Omega
+ 1. Maintenance instruction
+ 2. Maintenance
- 3. Repair of engines
   + 3.1. SOHC engines in volume 2,0 liters
   + 3.2. DOHC engines in volume 2,0 liters
   + 3.3. Engines in volume 2,5 and 3,0 liters
   + 3.4. Partition of all petrol engines
   - 3.5. Diesel engine in volume 2,0 liters
      3.5.1. Technical characteristics
      3.5.2. Repair operations on the engine established in the car
      3.5.3. Check of pressure of compression 3_5_4.htm
      3.5.5. Gazoraspredeleniye mechanism
      3.5.6. Cover of a head of the block of cylinders
      3.5.7. Pulley of a cranked shaft
      3.5.8. Chain cover
      3.5.9. Natyazhiteli of a chain
      3.5.10. Chains and asterisks
      3.5.11. Camshafts and pushers
      3.5.12. Head of the block of cylinders
      3.5.13. Oil pallet
      3.5.14. Oil pump
      3.5.15. Oil radiator
      3.5.16. Sealing rings of a cranked shaft
      3.5.17. Flywheel
      3.5.18. Suspension brackets of the power unit
      + 3.5.19. Major maintenance of the diesel engine in volume 2,0 liters
   + 3.6. Diesel six-cylinder 2,5-liter engine
+ 4. Heating system and ventilation
+ 5. Fuel, exhaust systems
+ 6. System of start of the engine
+ 7. Ignition system
+ 8. Coupling
+ 9. Transmissions
+ 10. Main transfer, semi-axes
+ 11. Brake system
+ 12. Suspension bracket and steering
+ 13. Body
+ 14. Body electric equipment




3.5.12. Head of the block of cylinders

GENERAL INFORMATION

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


Prevention

Be careful, that dirt did not get to the fuel pump.

At installation of a head of the block of cylinders, top directing and asterisks of a camshaft it is necessary to use new bolts.


Removal

PERFORMANCE ORDER
1. Merge cooling liquid from cooling system.
2. Remove a weight wire from the accumulator and a cover of a head of the block of cylinders.
3. Remove the vacuum pump of brake system.
4. Establish the piston of the first cylinder in the top dead point in a step of compression and fix a cranked shaft.
5. For improvement of access to a cover of an asterisk of the fuel pump execute the following actions:
      – remove a casing of the air filter and a forward exhaust pipe;
      – remove an auxiliary driving belt;
      – unscrew a fastening nut from a frame of a suspension bracket of the power unit and raise the engine so not to deform hoses and pipes.
6. Remove the top natyazhitel of a chain.
7. Remove the mechanism of a tension of a driving belt.
8. Unscrew bolts and uncover asterisks of the fuel pump.
9. Put combination labels between the top chain and asterisks, and also between an asterisk of a camshaft and a camshaft.
10. Unscrew bolts and remove top directing to a chain.
11. Before unscrewing of bolts of fastening of the top directing chain bolts are necessary for heating up to soften the structure interfering unscrewing of bolts.
12. Using a wrench, fix a camshaft from a provorachivaniye and unscrew bolts of fastening of an asterisk of a camshaft. Before unscrewing of a bolt take a pin of blocking of a cranked shaft and after unscrewing of a bolt establish a pin into place.
13. Remove a chain from an asterisk of a camshaft and take an asterisk from the engine. Under a chain establish a screw-driver or a steel core to prevent its falling in a head of the block of cylinders.
14. Clear area about connection of the pipeline of supply of fuel to the fuel pump and unscrew bolts of fastening of pipelines.
15. Disconnect a return tube from the fuel pump. Disconnect pipelines from brackets of fastening and move them aside from a head of the block of cylinders.
16. Remove inlet and final collectors. If dismantling of a head of the block of cylinders is not required, it can be removed together with collectors after performance of the following actions:
      – on models of a turbo disconnect inlet channels and a metal pipe from a turbonagnetatel,
      – unscrew a bolt of fastening of a plait of wires to the top part of an inlet collector and disconnect electric sockets,
      – disconnect the electric socket from the sensor of a cranked shaft,
      – disconnect pipes from fuel nozzles,
      – disconnect vacuum hoses from the switch of an inlet collector and the EGR valve,
      – disconnect electric wires from candles of an incandescence and remove the heat resisting screen of a turbonagnetatel,
      – disconnect oil pipelines of a turbonagnetatel from the block of cylinders, disconnect a vacuum hose of a diaphragm of a zaslonka,
      – remove the heat resisting screen of a starter.
17. Weaken collars and disconnect hoses of supply of cooling liquid (are specified by shooters) to a head of the block of cylinders.
18. Remove hoses of supply of cooling liquid to a back part of a head of the block of cylinders.
19. Unscrew the top bolt of fastening of the generator and move the generator from a head of the block of cylinders.
20. Unscrew three bolts of fastening of the right end of a head of the block of cylinders to the top part of a cover of a chain and one bolt, the block of cylinders fixing a head to the block of cylinders (are specified by shooters).
21. Gradually and consistently in an order shown in drawing Sequence of a tightening of bolts of fastening of a head of the block of cylinders unscrew 10 bolts of fastening of a head of the block of cylinders.
22. Take bolts of fastening of a head of the block of cylinders together with washers.
23. Remove a head of the block of cylinders.
24. Remove laying of a head of the block of cylinders.

Prevention

Do not stack a head of the block of cylinders the lower part on a table, but only on wooden whetstones as from a head of the block of cylinders fuel nozzles and glow plugs act.



Preparation for installation

PERFORMANCE ORDER
1. Interfaced surfaces of a head and the block of cylinders of the engine are necessary for clearing carefully of the laying and deposit remains, using a plastic or wooden scraper. It is also necessary to clear the top parts of pistons. When cleaning exclude possibility of hit of products of cleaning to oil canals of system of cooling. Carefully clear internal surfaces of cylinders.
2. Check surfaces of interface of a head and the block of cylinders of the engine on existence of defects. Insignificant damages are eliminated with machining. Also using a metal ruler and щуп, check planeness of a prileganiye of surfaces.
3. Clear openings under bolts in the block. Bolt screwing up in the opening filled with oil can break off the block because of hydraulic pressure.
4. Depending on size of a vystupaniye of pistons from the block of cylinders it is necessary to use laying of a head of strictly certain thickness. The thickness of laying is identified by the openings punched in the left forward corner of laying. The label of identification of thickness of a head of the block of cylinders is specified by an arrow.
5. Check that the cranked shaft is in the provision of the top dead point of the piston of the first cylinder. Establish the indicator of hour type on an arm on the block of cylinders. Establish a measuring tip on the block of cylinders and establish an indicator scale on 0. Establish a measuring tip on the piston of the first cylinder and slightly turn a cranked shaft in both parties and note the highest value on the indicator. Write down this value.
6. Similarly measure a piston vystupaniye on the N 4 cylinder. Then turn a camshaft on 180 ° and repeat measurement of a vystupaniye of pistons on cylinders 2 and 3. Turn a camshaft on 540 ° and establish it in a starting position.
7. Using size of the maximum vystupaniye of the piston, pick up laying of a head of the block of cylinders.

Quantity of openings
Thickness of laying
Without an opening
1,20 mm
1 opening
1,30 mm
2 openings
1,40 mm
3 openings
1,50 mm

Vystupaniye of the piston
Thickness of laying
0,40-0,50 mm
1,20 mm
0,51-0,60 mm
1,30 mm
0,61-0,70 mm
1,40 mm

Installation

PERFORMANCE ORDER
1. Wipe interfaced surfaces of the block of cylinders and a head of the block of cylinders.
2. Check that two directing pins (are specified by shooters) are established in a head of the block of cylinders and establish laying of a head of the block of cylinders.
3. Check that the cranked shaft is fixed in the provision of the top dead point of the piston of the first cylinder in a compression step, and cams of a camshaft of the first cylinder are directed up and the groove on the left side of a camshaft is parallel to a surface of a head of the block of cylinders.
4. Establish a head of the block of cylinders. Take the top chain on top of a head of the block of cylinders and fix it on a head, using an edge of a screw-driver or a steel core.
5. Grease bolts of fastening of a head of the block of cylinders with engine oil, insert them into a head and tighten by hand.
6. Gradually and consistently in some stages tighten bolts of fastening of a head of the block of cylinders (see fig. Sequence of a tightening of bolts of fastening of a head of the block of cylinders).
7. Screw up bolts of fastening of a cover of a chain to the right side of a head of the block of cylinders.
8. Turn the generator to the engine and fix the top bolt of fastening of the generator.
9. Connect hoses of supply of cooling liquid of a head of the block of cylinders and fix them collars.
10. Establish inlet and final collectors.
11. Establish a camshaft asterisk on a camshaft.
12. Establish pipelines of supply of fuel with new washers and fix them the demanded moment.
13. Fill in cooling liquid in system of cooling of the engine.