Opel Omega

since 1993-1999 release

Repair and operation of the car



Opel Omega
+ 1. Maintenance instruction
+ 2. Maintenance
- 3. Repair of engines
   + 3.1. SOHC engines of 2,0 liters
   - 3.2. DOHC engines of 2,0 liters
      3.2.1. Technical characteristics
      3.2.2. Check of a compression
      3.2.3. Top Dead Point (TDP) of the N1 piston
      3.2.4. Cover of camshafts
      3.2.5. Pulley of a bent shaft
      3.2.6. Covers of a gas-distributing belt
      3.2.7. Gas-distributing belt
      3.2.8. Natyazhitel of a belt, asterisks and intermediate pulleys
      3.2.9. Epiploons of camshafts
      3.2.10. Camshafts and pushers
      3.2.11. Head of cylinders
      3.2.12. Oil pallet
      3.2.13. Oil pump
      3.2.14. System of an equilibration of a bent shaft (engines since 1998)
      3.2.15. Flywheel
      3.2.16. Epiploons of a bent shaft
      3.2.17. Fastenings of the engine and transmission
   + 3.3. 2,5 and 3,0 liters engines
   + 3.4. Partition of all petrol engines
   + 3.5. 2,0 liters diesel engine
   + 3.6. 2,5 liters diesel six-cylinder engine
+ 4. Heating system and ventilation
+ 5. Fuel, exhaust systems
+ 6. System of start of the engine
+ 7. System of ignition
+ 8. Coupling
+ 9. Transmissions
+ 10. Main transfer, half shafts
+ 11. Brake system
+ 12. Suspension bracket and steering
+ 13. Body
+ 14. Body electric equipment
785173a6



3.2.1. Technical characteristics

GENERAL INFORMATION

Engine type
Four-cylinder line with the water cooling and two camshafts located in the top part of the engine
Engine code
X20XEV
Diameter of the cylinder
86,0 mm
Piston stroke
86,0 mm
Volume
1998 cm3
Sequence of operation of cylinders
1–3–4–2
Direction of rotation of a bent shaft
Clockwise
Extent of compression
10,8:1
Maximum power
100 kW at 5600 rpm
The maximum rotating moment
185 N of m at 4000 rpm
Compression pressure:
Nominal
12 – 15 bars
The maximum difference in pressure between two cylinders
1 bar
Camshaft
Cam height
9,2 mm
Lubrication system
Oil pump
Rotor type with the drive from a bent shaft
Minimum admissible pressure of oil idling (temperature of oil of 80 °C)
1,5 bars
Gaps:
Gap between 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 covers of bearings of the camshaft
8
Camshaft cover bolts
8
Camshaft asterisk bolt:
  – step 1
50
  – step 2
Tighten for 60 °
  – step 3
Tighten for 15 °
Bolts of the pump of cooling liquid
25
Rod cover bolt:
  – step 1
35
  – step 2
Tighten for 45 °
  – step 3
Tighten for 15 °
Bolts of a ventilating tube of a case of the engine
25
Bolts of system of an equilibration of a bent shaft – the engines released since 1998:
  – step 1
20
  – step 2
Tighten for 45 °
Bolts of a pulley of a bent shaft
20
Bolts of a rotor of the sensor of a bent shaft
13
Bolt of an asterisk of a bent 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 °
  – step 5
Tighten for 15 °
Bolts of a drive plate:
  – step 1
55
  – step 2
Tighten for 30 °
  – step 3
Tighten for 15 °
Fastenings of the engine and transmission:
  – left and right support:
     • the nut fixing a support to a body
55
     • the nut fixing a support to its arm
40
     • the bolts fixing a support arm to the block of cylinders
60
  – back support:
     • the bolts fixing a support to the transmission
40
     • the nuts fixing a support to a cross-piece
20
     • the bolts fixing a cross-piece to a body
45
The bolts fixing the transmission to the engine:
  – the bolts fixing the transmission to the block of cylinders
60
  – the bolts fixing the transmission to a flange of the oil pallet (engines with the compound oil pallet)
40
Bolts of a basic arm of the engine and transmission (engines with the integral oil pallet):
  – a bolt, the fixing arm to the engine
40
  – the bolts fixing an arm to the transmission
22
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 °
Bolts of a cast part of the oil pallet (engines with the compound oil pallet):
  – step 1
20
  – step 2
Tighten for 45 °
Oil filter
15
Oil pump:
  – fixing bolts
8
  – pump cover screws
6
  – bolt of the reducing valve
50
Bolts of a maslozaborny branch pipe:
  – engines with the integral oil pallet
8
  – engines with the compound oil pallet:
     • the bolts fixing a maslozaborny branch pipe to a casing of the oil pump
8
     • the bolts fixing a maslozaborny branch pipe to a cast part of the oil pallet
M6:10; M8: 20
Bolts of the oil pallet:
  – oil pallet, two-piece:
     • step 1
8
     • step 2
Tighten for 30 °
  – bolts of a cast part of the oil pallet:
     • the bolts fixing the block to the block of cylinders and the oil pump
20
     • the bolts fixing the block to the transmission
40
Cap of a drain opening of the oil pallet:
  – a cap with a six-sided head
45
  – a cap with a tetrahedral head
10
Bolts of a cover of a gas-distributing belt:
  – external cover
6
  – back cover
8
Intermediate pulley of a gas-distributing belt:
  – pulley bolt
25
  – arm bolts
25
Bolt of a natyazhitel of a gas-distributing belt
20