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
   - 3.2. DOHC engines in volume 2,0 liters
      3.2.1. Technical characteristics
      3.2.2. Compression check
      3.2.3. Top dead point (VMT) of the N1 piston
      3.2.4. Cover of camshafts
      3.2.5. Pulley of a cranked 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 cranked shaft (engines since 1998)
      3.2.15. Flywheel
      3.2.16. Epiploons of a cranked shaft
      3.2.17. Engine and transmission fastenings
   + 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


3.2.1. Technical characteristics

GENERAL INFORMATION

Engine type
Four-cylinder ryadny with 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 cranked shaft
Clockwise
Extent of compression
10,8:1
Maximum capacity
100 kW at 5600 rpm
The maximum rotating moment
185 N of m at 4000 rpm
Pressure of compression:
The nominal
12-15th bar
The maximum difference in pressure between two cylinders
1 bar
Camshaft
Cam height
9,2 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:
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 covers of bearings of a camshaft
8
Bolts of a cover of a camshaft
8
Bolt of an asterisk of a camshaft:
  – step 1
50
  – step 2
Tighten for 60 °
  – step 3
Tighten for 15 °
Bolts of the pump of cooling liquid
25
Bolt of a cover of a rod:
  – 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 cranked shaft – engines let out since 1998 g:
  – step 1
20
  – step 2
Tighten for 45 °
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 °
  – step 5
Tighten for 15 °
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
The bolts, fixing a transmission to the engine:
  – the bolts, fixing a transmission to the block of cylinders
60
  – the bolts, fixing a 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, a fixing arm to the engine
40
  – the bolts, fixing an arm to a 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
  – screws of a cover of the pump
6
  – bolt of the reduktsionny 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
М6:10; М8: 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 a 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