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
      3.1.1. Technical characteristics
      3.1.2. Compression check
      3.1.3. Top dead point (VMT) of the N1 piston
      3.1.4. Camshaft cover
      3.1.5. Pulley of a cranked shaft
      3.1.6. Covers of a gas-distributing belt
      3.1.7. Gas-distributing belt
      3.1.8. Natyazhitel of a gas-distributing belt and asterisk
      3.1.9. Camshaft epiploon
      3.1.10. Casing of a camshaft and camshaft
      3.1.11. Pushers and hydraulic lifts
      3.1.12. Head of cylinders
      3.1.13. Oil pallet
      3.1.14. Oil pump
      3.1.15. Flywheel
      3.1.16. Epiploons of a cranked shaft
      3.1.17. Engine and transmission fastenings
   + 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
   + 3.6. 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


3.1.1. Technical characteristics

GENERAL INFORMATION

Engine type
Four-cylinder ryadny with water cooling and one camshaft located in the top part of the engine
Engine code:
  – the models equipped with the catalytic converter
X20SE
  – the models which have not been equipped with the catalytic converter
20SE
Diameter of the cylinder
86 mm
Piston stroke
86 mm
Volume
1998 cm3
Sequence of operation of cylinders
1–3–4–2
Direction of rotation of a cranked shaft
Clockwise
Extent of compression
10:1
Maximum capacity
85 kW at 5400 rpm
The maximum rotating moment
178 N of m at 2800 rpm
Pressure of compression:
  – the nominal
12-15th bar
  – the maximum difference in pressure between two cylinders
1 bar
Camshaft
Free wheeling
0,09-0,21 mm
Maximum admissible radial palpation
0,04 mm
Greasing system
Oil pump
Rotor type with a drive from a cranked shaft
Minimum admissible pressure of oil idling (oil 80 temperature ° C)
1,5 bar
Gaps:
  – a gap between a teeth of rotors of the pump
0,08-0,15 mm
  – free wheeling of rotors
0,03-0,10 mm

Moments of an inhaling, N of m.

Bolts of a cover of a camshaft
8
Bolt of an asterisk of a camshaft
45
Bolts of a persistent plate of a camshaft
8
Bolts of a back cover of a casing of a camshaft
8
Bolt of a cover of a rod:
  – step 1
35
  – step 2
Tighten for 45 °
  – step 3
Tighten for 15 °
Bolts of the pump of cooling liquid
25
Bolts of a ventilating tube of a case of the engine
25
Bolts of a pulley of a cranked shaft
20
Bolts of a rotor of the sensor of a cranked shaft
13
Bolt of an asterisk of a cranked shaft:
  – step 1
130
  – step 2
Tighten for 40-50 °
Bolts of a head of cylinders:
  – step 1
25
  – step 2
Tighten for 90 °
  – step 3
Tighten for 90 °
  – step 4
Tighten for 90 °
Bolts of a leading disk:
  – step 1
55
  – step 2
Tighten for 30 °
  – step 3
Tighten for 15 °
Engine and transmission fastenings:
  – left and right support:
     • a nut, fixing a support to a body,
55
     • a nut, fixing a support to its arm
40
     • the bolts, support fixing an arm to the block of cylinders
60
  – back support:
     • the bolts, fixing a support to a transmission
40
     • the nuts, fixing a support to a cross-piece
20
     • the bolts, fixing a cross-piece to a body
45
Bolts of a basic arm of the engine and transmission:
  – a bolt, a fixing arm to the engine
40
  – the bolts, fixing an arm to a transmission
22
  – the bolts, fixing a transmission to the engine
60
Flywheel bolts:
  – step 1
65
  – step 2
Tighten for 30 °
  – step 3
Tighten for 15 °
Bolts of covers of radical bearings:
  – step 1
50
  – step 2
Tighten for 45 °
  – step 3
Tighten for 15 °
Oil filter
15
Oil pump:
  – fixing bolts
8
  – ваинты pump covers
6
  – bolt of the reduktsionny valve
50
  – bolts of a maslozaborny branch pipe
8
Heatisolating guards of spark plugs
25
Bolts of the oil pallet:
  – fixing bolts
8
  – stopper of a drain opening of the oil pallet
55
Bolts of a cover of a gas-distributing belt:
  – external cover
4
  – back cover
6
Bolt of a natyazhitel of a gas-distributing belt
20