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
   3.2. General information
   3.3. Removal and engine installation
   3.4. Replacement of support of the power unit
   + 3.5. Gear belt, pulleys, pulley of the mechanism of a tension and intermediate pulley
   3.6. A gear belt with the automatic mechanism of a tension
   3.7. Forward sealing ring of a camshaft
   3.8. Camshafts
   3.9. Installation of a head of the block of cylinders on the engine established in the car
   3.10. Installation of a head of the block of cylinders on the engine which has been removed from the car
   3.11. Repair of a head of the block of cylinders
   3.12. Hydraulic pushers of valves
   3.13. Replacement of a forward sealing ring of a cranked shaft
   3.14. Oil pallet
   3.15. Oil pump
   3.16. Oil radiator
+ 4. Repair of the diesel engine
+ 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



3.10. Installation of a head of the block of cylinders on the engine which has been removed from the car

GENERAL INFORMATION

Prevention

Removal of a head of the block of cylinders make on the cold engine.


At installation it is necessary to use new bolts of fastening and new laying of a head of the block of cylinders. At установ ке cases of a camshaft it is necessary to use hermetic. The specified moments of a tightening can be applied only to later bolts. When using bolts of early types specify the tightening moments at the dealer of Opel.

Head of the block of cylinders of the DOHC engine

1–bottom support of a spring;
2–maslootrazhatelny cap;
3–spring;
4–top support of a spring;
5–crackers;
6–hydraulic pusher;
7–bearing cover;
8–head of the block of cylinders;
9–bolt of fastening of a head;
10-hairpin;
11-caps;
12-laying;
13-valve

Removal

PERFORMANCE ORDER
1. The head of the block of cylinders can be removed together with an inlet collector or previously having removed an inlet collector from a head of the block of cylinders.
2. Remove a gear belt, pulleys of a camshaft, the mechanism of a tension and an intermediate pulley.
3. Unscrew top and averages are resistant for screws of fastening of an external casing of a gear belt. Pay attention that the top rack is unscrewed from a head of the block of cylinders, and the average rack is attached by a bolt.
4. Unscrew two top bolts of fastening of a back casing of a gear belt to a head of the block of cylinders.
5. Uncover the distributor of ignition and high-voltage wires.
6. Unscrew a bolt, a fixing arm of a pipe of ventilation of a case to an end face of a head of the block of cylinders.
7. Check that hoses, pipes and electric sockets are disconnected from a head of the block of cylinders.
8. On the XEV X20 model remove a camshaft.
9. Using a face key, in the sequence shown on fig. Sequence of unscrewing of bolts of fastening of a head of the block of cylinders on engines of 20 XEJ and С20 HE, Sequence of unscrewing of bolts of fastening of a head of the block of cylinders on the XEV X20 engine, unscrew bolts of fastening of a head of the block of cylinders first of all on a turn quarter, then on a half of a turn and, at last, unscrew them completely.
10. Remove a head of the block of cylinders.
11. Remove laying of a head of the block of cylinders. At installation it is necessary to use new laying.

Preparation for installation

PERFORMANCE ORDER
1. Interfaced surfaces of a head and the block of cylinders should be absolutely pure. For their cleaning use a firm plastic or wooden scraper. When cleaning be careful, as the aluminum alloy is very easy for damaging. Check that the deposit did not get to oil and water canals. It is especially important for greasing system as the deposit can block supply of oil to engine components. If necessary clear channels.
2. Check interfaced surfaces of a head and the block of cylinders on existence of notches, deep scratches and other damages. If defects small, they can be removed with machining. But at major defects of a detail are subject to replacement.
3. Using a metal ruler and щуп, check planeness interfacing my surfaces.
4. 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.
5. Replace bolts of fastening of a head of the block of cylinders irrespective of their condition.

Installation

PERFORMANCE ORDER
1. Check that new laying of a head of the block of cylinders has the same type, as the original and establish laying so that marking of OBEN or TORAHS was directed up and settled down from a gear belt.
2. Establish a head of the block of cylinders on directing pins.
3. Temporarily establish pulleys of a cranked shaft and camshafts and check that adjusting labels of pulleys coincide with indexes.
4. Establish new bolts of fastening of a head of the block of cylinders and tighten them at this stage by hand.
5. Gradually and consistently tighten all bolts of fastening of a head of the block of cylinders the demanded moment in some stages.
6. Further installation is made in sequence, return to removal taking into account the next moments.
7. Establish the mechanism of a tension of a gear belt, an intermediate pulley, pulleys of camshafts and a new gear belt. Adjust a tension of a gear belt.