Opel Vectra A

since 1988-1995 release

Repair and operation of the car

Vektr's Opel And
+ 1. Maintenance instruction
+ 1.1 Maintenance
+ 2. Engine
- 3. Repair of DOHC engines
   3.2. General information
   3.3. Removal and installation of the engine
   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 the camshaft
   3.8. Camshafts
   3.9. Installation of a head of the block of cylinders on the engine installed in the car
   3.10. Installation of a head of the block of cylinders on the engine 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 bent shaft
   3.14. Oil pallet
   3.15. Oil pump
   3.16. Oil heater
+ 4. Repair of the diesel engine
+ 5. Cooling system
+ 6. Fuel system
+ 7. The fuel and exhaust system of models with system of injection of fuel
+ 8. Exhaust system and system of decrease in toxicity of exhaust gases
+ 9. Fuel systems of the diesel engine
+ 10. Engine electrical systems
+ 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


3.2. General information


Operations which are used for repair of the engine with two top camshafts (DOHC) are given in section 3. Subsection 3 needs to be used together with section 2.

The block of cylinders and details located in the block of cylinders of the DOHC engine are generally similar to the SOHC engine of 2,0 l. Difference is that pistons are attached to rods by piston fingers of floating type and the fixed lock rings.

Camshafts on DOHC engines are given from a bent shaft by one gear belt. About four valves (two inlet and two final) which are put in action from camshafts through hydraulic pushers are installed in each cylinder. One camshaft is put in action inlet the valve, and another – final.

Models with DOHC engines have the separate oil heater.

The distributor of ignition is put in action from the camshaft operating final valves.