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
   + 3.3. 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
      3.5.1. Technical characteristics
      3.5.2. Repair operations on the engine established in the car
      3.5.3. Check of pressure of compression 3_5_4.htm
      3.5.5. Gazoraspredeleniye mechanism
      3.5.6. Cover of a head of the block of cylinders
      3.5.7. Pulley of a cranked shaft
      3.5.8. Chain cover
      3.5.9. Natyazhiteli of a chain
      3.5.10. Chains and asterisks
      3.5.11. Camshafts and pushers
      3.5.12. Head of the block of cylinders
      3.5.13. Oil pallet
      3.5.14. Oil pump
      3.5.15. Oil radiator
      3.5.16. Sealing rings of a cranked shaft
      3.5.17. Flywheel
      3.5.18. Suspension brackets of the power unit
      - 3.5.19. Major maintenance of the diesel engine in volume 2,0 liters
         3.5.19.1. Technical characteristics
         3.5.19.2. Head of the block of cylinders
         3.5.19.3. Pistons and rods
         3.5.19.4. Cranked shaft
         3.5.19.5. Block of cylinders of the engine
         3.5.19.6. Radical bearings and bearings of rods
         3.5.19.7. Engine balance of assembly at major maintenance
         3.5.19.8. Piston rings
         3.5.19.9. Working gaps of radical bearings
         3.5.19.10. Working gaps of shatunny bearings
         3.5.19.11. Engine start after major maintenance
   + 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


3.5.19.6. Radical bearings and bearings of rods

GENERAL INFORMATION

Even thus that radical and shatunny bearings are subject to replacement at major maintenance of the engine, they are necessary for examining carefully as they can give valuable information concerning an engine condition.

Arrangement of a label of identification on the basis of the bearing

Typical defects of bearings


Failure of the bearing can occur because of a lack of greasing, presence of dirt or other alien particles, an engine or corrosion overload. Irrespective of the reason of failure of the bearing it should be eliminated before the engine will repeatedly gather.

At survey of bearings remove them and spread out in the same order as they were established on the engine. It will allow to define the corresponding neck of a cranked shaft and will facilitate search of malfunctions.

Alien particles can get to the engine various ways. Metal particles can is in engine oil as a result of normal wear of the engine. Small particles together with engine oil can get to bearings and easily take root into a soft material of the bearing. Big particles, getting to the bearing, will scratch the bearing or a neck of a cranked shaft. The best prevention of failure of the bearing for this reason – carefully clear all internal surfaces of the engine and keep them clean at engine assembly. Also frequent and regular replacement of oil with the filter is recommended.

Insufficient greasing of necks of a cranked shaft can be caused by many different reasons, such as high temperature of oil, an overload of the engine and leakage of oil.

The driving manner also influences durability of the bearing. Completely open butterfly valve at low turns of the engine creates high load of bearings and expression from a zone of contact of an oil film. These loadings lead to emergence of cracks in a working part of the bearing that weakens the bearing and can lead to a separation of an antifrictional layer from a steel basis.

Movement on short distances leads to corrosion of bearings as a result the engine does not leave on the stabilized working temperature at which water vapor and corrosion gases are removed. These pairs and gases, being condensed in engine oil, form acid and a deposit. Acid together with engine oil gets to bearings, and corrosion of bearings begins.

The wrong selection of bearings at engine assembly also leads to failure of bearings. The bearings established with a preliminary tightness, leave an insufficient working gap of the bearing therefore decreases or there is no butter layer for greasing.