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



3.5.19.4. Cranked shaft

GENERAL INFORMATION
Prevention

At installation of covers of bearings of a cranked shaft it is necessary to use new bolts.

Arrangement of labels of identification of covers of radical bearings

Covers of bearings

 Only covers of N1 and N2 bearings (are specified by shooters) have factory marking.

Removal of a cranked shaft

PERFORMANCE ORDER
1. Remove an asterisk of a cranked shaft, a chain and a flywheel.
2. Evenly and gradually unscrew bolts and remove the main block of bearings from the basis of covers of radical bearings.
3. Remove pistons and rods.
4. Check axial люфт a cranked shaft.
5. Mark covers of radical bearings from 1 to 5.
6. Gradually and consistently unscrew bolts of fastening of covers of radical bearings.
7. Remove covers of radical bearings together with loose leaves.
8. Remove a cranked shaft and remove a back oil sealing ring of a cranked shaft. Remove the top loose leaves of radical bearings.

Check axial люфта cranked shaft

Check axial люфта a cranked shaft is made, when it is established in the block of cylinders of the engine.

Check axial люфта a cranked shaft with use of the indicator of hour type

 Check axial люфта is made by the indicator of the hour type which arm is established on the block of cylinders of the engine, and the measuring tip leans in an end face of a cranked shaft. Moving a cranked shaft from an emphasis against the stop along an axis measure size axial люфта. The result of measurement indicates need of use of new persistent half rings.

Check axial люфта a cranked shaft with use щупов

 In the absence of the indicator of hour type axial люфт a cranked shaft it is possible to measure by an edge щупа, having moved a cranked shaft to one party against the stop and having measured a gap between the radical N 2 bearing and cranked shaft.

PERFORMANCE ORDER
1. Clear a cranked shaft, using the corresponding solvent and drain it the compressed air.
2. Check radical and shatunny necks of a cranked shaft on wear, corrosion and cracks.
3. Wear of a shatunny neck is characterized by metal knocks at operation of the engine, especially under loading on small turns and reduction of pressure of oil.
4. Wear of radical necks of a cranked shaft is characterized by strong vibration of the engine and the metal knock increasing at increase in turns of the engine, and also reduction of pressure of oil.
5. Check necks of a cranked shaft on a roughness. Any appreciable roughness specifies that a cranked shaft it is necessary перешлифовать or to replace.
6. If the cranked shaft was перешлифован, check agnails round openings for greasing. In the presence of agnails remove them with a small file or a shaber and carefully clear openings and channels of shaving.
7. Using a micrometer, measure diameter of radical and shatunny necks of a cranked shaft and compare results to technical requirements. Measurement of necks make in several points both on diameter, and on length of a neck that will allow to reveal ovality and a konusnost if they are present.
8. Check surfaces of contact of oil consolidation on each end of a cranked shaft on wear and other damages. If wear of a neck from consolidation big, that, probably, is required replacement of a cranked shaft.
9. On some engines if necks of a cranked shaft were перешлифованы for the repair size, it is necessary to establish loose leaves of the increased size.

Installation of a cranked shaft

PERFORMANCE ORDER
1. Take a cranked shaft from the block of cylinders.
2. Clear a back part of the loose leaf and a place of its installation in the block of cylinders and covers of radical bearings. Establish loose leaves on the places.
3. Grease a working surface of the loose leaf with pure engine oil and establish a cranked shaft in the block of cylinders of the engine.
4. Measure axial люфт a cranked shaft.
5. Grease the bottom loose leaves in covers of radical bearings with pure engine oil and check that ledges on loose leaves are in cover grooves. Establish covers of radical bearings with the first on the fourth and screw them, without tightening.
6. Check that a back cover of the bearing pure and dry then in grooves from each party of a cover put a layer of hermetic and establish a cover on the block of cylinders of the engine.
7. Grease bolts of fastening of covers of bearings of a cranked shaft with pure engine oil, insert them into covers and tighten by hand.
8. Gradually and in diagonal sequence from the center to edge tighten bolts of fastening of covers of bearings in stages.
9. After a tightening of bolts of fastening of covers of radical bearings press hermetic into a groove of a back cover of a cranked shaft. Groove filling with hermetic is necessary for making, while hermetic will not appear from an opening shown by an arrow. Wipe surplus of hermetic.
10. Check that the cranked shaft rotates smoothly and without jammings.
11. Establish pistons with rods.
12. Check that covers of bearings and the main block of bearings pure and dry. Establish the main block on the engine, thus the tube on the block should be directed to a chain of a drive of the mechanism of a gazoraspredeleniye. Then establish bolts and in diagonal sequence from the center to edge tighten bolts the demanded moment.
13. Establish a new left oil sealing ring of a cranked shaft, then establish a flywheel, chains, asterisks and a head of the block of cylinders.