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
   + 3.3. 2,5 and 3,0 liters engines
   + 3.4. Partition of all petrol engines
   - 3.5. 2,0 liters diesel engine
      3.5.1. Technical characteristics
      3.5.2. Repair operations on the engine installed in the car
      3.5.3. Check of pressure of compression 3_5_4.htm
      3.5.5. Gas distribution mechanism
      3.5.6. Cover of a head of the block of cylinders
      3.5.7. Pulley of a bent 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 heater
      3.5.16. Sealing rings of a bent shaft
      3.5.17. Flywheel
      3.5.18. Suspension brackets of the power unit
      - 3.5.19. Capital repairs of the 2,0 liters diesel engine Technical characteristics Head of the block of cylinders Pistons and rods Bent shaft Block of cylinders of the engine Radical bearings and bearings of rods Engine balance of assembly at capital repairs Piston rings Working gaps of radical bearings Working gaps of conrod bearings Start of the engine after capital repairs
   + 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 Working gaps of radical bearings


Use of both standard radical bearings of a bent shaft, and radical bearings with the reduced size is possible. The required size of the bearing can be determined after measurement of a neck of a bent shaft.


1. Clear a back part of an insert and the place of its installation in the block of cylinders and covers of radical bearings.
2. Establish inserts on the places, at the same time the ledge on an insert has to be combined with a groove on a cover (it is specified by an arrow).
3. One of methods which assumes existence of a micrometer for measurement of diameter of openings consists in installing covers of radical bearings together with an insert on the block of cylinders and to screw them the required moment. Measure the internal diameter of each collected couple of inserts of bearings. Measure diameter of each radical neck of a bent shaft. Subtract the corresponding diameter of a radical neck of a bent shaft from the measured diameter of the bearing.
4. The second (and more exact) the method consists in using the product known as Plastigage. It is a round plastic core which contracts between an insert and a neck of a bent shaft. After removal of a cover of the radical bearing the deformed plastic core is measured by a special template which is available in Plastigage set. On the inserts installed in the block of cylinders establish a bent shaft without lubricant. Necks of a bent shaft and inserts have to be absolutely pure and dry.
5. Cut off several pieces of a plastic core of Plastigage (they have to be slightly shorter, than width of the main bearings) and establish on each neck of a bent shaft.
6. Establish covers with the lower inserts and tighten fastening bolts the required moment. In the course of measurement of a gap by Plastigage method do not rotate a bent shaft.
7. Unscrew a cover of fastening of an insert, remove it and apply a large-scale ruler to the deformed plastic core. Comparing width of the deformed plastic core to control width on a large-scale ruler, determine gap size.
8. In conclusion carefully clear Plastigage-material traces from inserts and a bent shaft.