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
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The DOHC engine is an engine with two camshafts installed in a head of the block of cylinders.
Technical characteristics of DOHC engines same, as well as SOHC engines 2,0 liters except for below-mentioned.
General information
Type
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All models | The engine with four cylinders rowed, with water cooling, established cross in a forward part of the car. The drive of valves is carried out by two camshafts through hydraulic pushers, the gear belt put in action. |
Codes of engines: |
– 20 XEJ |
2.0 l (1998 cm3)
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– C20 XE |
2.0 l (1998 cm3) + catalyst
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– X20 XEV |
2.0 l (1998 cm3) + catalyst, "Ecotec"
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Extent of compression: |
– 20 XEJ and C20 XE |
10,5: 1
|
– X20 XEV |
10,8: 1
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Maximum power: |
– 20 XEJ and C20 XE |
110 kW (150 h.p.) at 6000 rpm
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– X20 XEV |
100 kW (136 h.p.) at 5400 rpm
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Maximum torque: |
– 20 XEJ |
196 Nanometer at 4800 rpm
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– C20 XE |
• till 1993 |
196 Nanometer at 4800 rpm
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• since 1993 |
196 Nanometer at 4600 rpm
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– X20 XEV |
185 Nanometer at 4000 rpm
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Head of the block of cylinders
Full height of a head of the block of cylinders:
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– 20 XEJ and C20 XE |
135,58 – 135,68 mm
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– X20 XEV |
134,00 mm
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Height of installation of the directing valve plug: |
– 20 XEJ and C20 XE |
10,70 – 11,00 mm
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– X20 XEV |
13,70 – 14,00 mm
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Camshaft
Diameter of necks of bearings of the camshaft (all models)
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27,939 – 27,960 mm
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Diameter of the bearing of the camshaft (all models) |
28,000 – 28,021 mm
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Raising of a cam: |
– 20 XEJ and C20 XE |
9,5 mm
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– X20 XEV |
10,0 mm
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The most admissible curvature of an axis of the camshaft: |
– 20 XEJ and C20 XE |
0,04 mm
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– X20 XEV |
0,06 mm
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Axial side play (all models) |
0,040 – 0,144 mm
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Valve and guides of valves: |
Full length of the new valve, mm: |
Inlet
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Final
|
– 20 XEJ and C20 XE |
105,0
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105,0
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– X20 XEV |
102,0
|
92,0
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Full minimum length of the valve, mm: |
– 20 XEJ and C20 XE |
104,6
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104,6
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– X20 XEV |
101,7
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91,8
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Diameter of a plate of the valve, mm: |
– 20 XEJ and C20 XE |
33,0±0,1
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29,0±0,1
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– X20 XEV |
32,0±0,1
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29,0±0,1
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Diameter of a core of the valve (all engines), mm: |
– 20 XEJ and C20 XE: |
• nominal |
6,955 – 6,970
|
6,945 – 6,960
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• the repair size is 0,075 mm |
7,030 – 7,045
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7,020 – 7,035
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• the repair size is 0,150 mm |
7,105 – 7,120
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7,095 – 7,110
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• the repair size is 0,250 mm |
7,205 – 7,220
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7,195 – 7,210
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– X20 XEV |
• nominal |
5,955 – 5,970
|
5,945 – 5,960
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• the repair size is 0,075 mm |
6,030 – 6,045
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6,020 – 6,035
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• the repair size is 0,150 mm |
6,105 – 6,120
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6,095 – 6,110
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Internal diameter of the directing plug of the valve, mm: |
– 20 XEJ and C20 XE: |
• nominal |
7,000 – 7,015
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• the repair size is 0,075 mm |
7,075 – 7,090
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• the repair size is 0,150 mm |
7,150 – 7,165
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• the repair size is 0,250 mm |
7,400 – 7,415
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– X20 XEV |
• nominal |
6,000 – 6,015
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• the repair size is 0,075 mm |
6,075 – 6,090
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• the repair size is 0,150 mm |
6,150 – 6,165
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• the repair size is 0,250 mm |
6,400 – 6,415
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Lubrication system
Oil pressure on idling turns on the warm engine:
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– 20 XEJ and C20 XE |
2,5 bars
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– X20 XEV |
1,5 bars
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Tightening moments
Bolts of fastening of the generator to the block of cylinders
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35 Nanometer
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Vacuum hose of the vacuum amplifier of brakes to an inlet collector |
20 Nanometer
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Cover of a head of the block of cylinders (M6)
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9 Nanometer
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Cover of a head of the block of cylinders (M8)
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22 Nanometer
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Cover of a head of the block of cylinders to a final collector (X20 XEV) |
5 Nanometer
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Sensor of impulses of a bent shaft
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6 Nanometer
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Reception exhaust pipe to an arm
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12 Nanometer
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Arm of an inlet collector to the block of cylinders
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25 Nanometer
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Arm of an intermediate shaft to the block of cylinders
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55 Nanometer
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The detonation sensor to the block of cylinders
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20 Nanometer
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Pipelines to an adapter / to the oil heater
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30 Nanometer
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Oil filter to the oil pump
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15 Nanometer
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Arm of a pipe of the masloizmeritelny probe to the block of cylinders
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25 Nanometer
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Perepuskna the valve to the oil pump
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30 Nanometer
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Adapter of the oil pump
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23 Nanometer
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Arm of the pump of the amplifier of steering
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25 Nanometer
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Cover of spark plugs to a head of the block of cylinders:
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– 20 XEJ and C20 XE
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8 Nanometer
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– X20 XEV
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6 Nanometer
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Starter to the block of cylinders
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45 Nanometer
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Starter arm to the block of cylinders
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25 Nanometer
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Stopper of a temperature regulator (M20) *
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30 Nanometer
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Casing of a gear belt
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8 Nanometer
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Pulley of a gear belt to a bent shaft (*):
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– stage 1
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250 Nanometer
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– stage 2
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To tighten on a corner 45–50 °
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The directing roller of a gear belt to an arm
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25 Nanometer
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The directing roller of a gear belt to the block of cylinders:
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– engines till 1993:
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• stage 1
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25 Nanometer
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• stage 2
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To tighten on a corner 45 °
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• stage 3
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To tighten on a corner 15 °
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– engines since 1993
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25 Nanometer
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Transmission arm to the block of cylinders
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60 Nanometer
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Bolts of fastening of the transmission to the engine
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60 Nanometer
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* It is necessary to use only new bolts. |
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