Opel Vectra A

since 1988-1995 of release

Repair and car operation



Vektr A. Opel
+ 1. Maintenance instruction
+ 1.1 Maintenance
+ 2. Engine
+ 3. Repair of DOHC engines
- 4. Repair of the diesel engine
   4.2. General information
   4.3. The repair which is not demanding removal of the engine
   4.4. Compression check
   4.5. Top dead point (VMT) of the piston of the first cylinder
   4.6. Cover of a head of the block of cylinders
   4.7. Pulley of a cranked shaft
   4.8. Casings of a gear belt
   4.9. Replacement of a gear belt
   4.10. Check and installation of phases of a gazoraspredeleniye
   + 4.11. Mechanism of a tension of a gear belt and pulleys
   4.12. Replacement of a sealing ring of a camshaft
   4.13. Check and adjustment of gaps of valves
   4.14. Camshaft and pushers
   4.15. Head of the block of cylinders
   4.16. Oil pallet
   4.17. Oil pump
   4.18. Replacement of a sealing ring of the oil pump
   4.19. Oil radiator
   + 4.20. Pistons with rods
   4.21. Flywheel
   4.22. Replacement of sealing rings of a cranked shaft
   4.23. Replacement of support of the power unit
   4.24. Recommendations about engine removal
   4.25. Removal and engine installation
   4.26. Engine repair
   4.27. Engine start after major maintenance
+ 5. Cooling system
+ 6. Fuel system
+ 7. A fuel and exhaust system of models with system of injection of fuel
+ 8. Exhaust system and system of fall of toxicity of exhaust gases
+ 9. Fuel systems of the diesel engine
+ 10. Engine electrosystems
+ 11. Transmission
+ 12. Mechanical transmission
+ 13. Automatic transmission
+ 14. Power shafts
+ 15. Brake system
+ 16. Suspension bracket
+ 17. Body
+ 18. Electric equipment
+ 19. Check of malfunctions



4.15. Head of the block of cylinders

GENERAL INFORMATION

Prevention

At installation of a head of the block of cylinders it is necessary to use new bolts.


Head of the block of cylinders

1–cap;
2–hairpin;
3–nut;
4–covers of bearings of a camshaft;
5–rubber cap;
6–head of the block of cylinders;
7–directing valves;
8–saddles of valves;
9–laying

Removal

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

PERFORMANCE ORDER
1. Merge cooling liquid from cooling system.
2. Remove inlet and final collectors.
3. Remove a camshaft pulley.
4. Unscrew bolts of fastening of a back casing of a gear belt to a head of the block of cylinders.
5. Weaken collars and disconnect hoses of supply of cooling liquid to a casing of the thermostat and a head of the block of cylinders.
6. Unscrew nuts and remove wires from incandescence candles.
7. Disconnect the socket from the sensor of temperature of cooling liquid.
8. Disconnect pipelines of supply of fuel from fuel nozzles and the fuel pump of a high pressure and remove pipelines.
9. Gradually unscrew bolts of fastening of a head of the block of cylinders as it should be, the return shown in drawing Sequence of a tightening of bolts of fastening of a head of the block of cylinders.
10. Take bolts together with washers.
11. Remove a head from the block of cylinders and laying.

Preparation for installation

Arrangement of openings for identification of thickness of laying of a head of the block of cylinders
And – the opening is absent – 1,4 mm;

In – one opening – 1,45 mm;

With – two openings – 1,5 mm


Points of measurement of a vystupaniye of the piston

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.
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 (see fig. An arrangement of openings for identification of thickness of laying of a head of the block of cylinders).
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. Check a piston vystupaniye in three points (see fig. Points of measurement of a vystupaniye of the piston and tab. 1).
6. Similarly measure a piston vystupaniye on the cylinder No. 4. 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. Define an average vystupaniye of the piston, putting 12 sizes of a vystupaniye of pistons and having divided total number on 12. Using size of an average vystupaniye of the piston, pick up laying of a head of the block of cylinders (see tab. 2).

Table 1

Quantity of openings
Thickness of laying
Without an opening
1,40 mm
1 opening
1,45 mm
2 openings
1,50 mm

Table 2

Vystupaniye
Thickness of the piston of laying
0,58-0,64 mm
1,40 mm
0,65-0,70 mm
1,45 mm
0,71-0,78 mm
1,50 mm

REPAIR OF THE HEAD OF THE BLOCK OF CYLINDERS

The main operations on repair of a head of the block of cylinders see subsection 2.21.

Special drift for a vypressovka of candles of an incandescence

Vypressovka of incandescence candles with use of a special drift

PERFORMANCE ORDER
1. For a vypressovka of vortical chambers use a special drift (see fig. A special drift for a vypressovka of candles of an incandescence), inserted through an opening for a glow plug.
2. At installation of vortical chambers, combine an adjusting pin with a groove in a head of the block of cylinders. Press vortical chambers with no more than 28 000 N.Proverte's effort a vystupaniye of the vortical chamber.

Installation

Laying installation on the block of cylinders of the engine

Tightening of bolts of fastening of a head of the block of cylinders

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 established in a head of the block of cylinders and establish laying of a head of the block of cylinders (see fig. Laying installation on the block of cylinders of the engine).
3. Check that the label of a pulley of a cranked shaft is combined with the index, and the camshaft is established in a head of the block of cylinders so that cams of the first cylinder were directed up.
4. Establish a head of the block of cylinders.
5. Grease bolts of fastening of a head of the block of cylinders with engine oil and, being careful, insert them into nests. Screw up bolts of fastening of a head by hand.
6. In the sequence shown in drawing Sequence of a tightening of bolts of fastening of a head of the block of cylinders, tighten bolts of fastening of a head of the block of cylinders in some stages.
7. Further installation is made in sequence, return to removal. Fill in cooling liquid in cooling system.