Toyota Corolla

1992-1998 of release

Repair and operation of the car



Toyota Corolla
+ 1. Maintenance instruction
+ 2. Maintenance
- 3. Engines
   - 3.1. Petrol engines
      + 3.1.1. Repair work without dismantle of the engine from the car
      - 3.1.2. Dismantle and capital repairs
         3.1.2.1. Specifications
         3.1.2.2. Diagnostics of the engine by means of a vakuumer
         3.1.2.3. Check of a compression in engine cylinders
         + 3.1.2.4. Dismantle of the power unit - methods and safety measures
         3.1.2.5. Alternatives of capital repairs of the engine
         3.1.2.6. Order of dismantling of the engine
         3.1.2.7. Head of the block of cylinders
         3.1.2.8. Repair of valves
         3.1.2.9. Conrod and piston group
         3.1.2.10. Dismantle of the crankshaft
         3.1.2.11. Block of cylinders
         3.1.2.12. Honningovaniye of cylinders
         3.1.2.13. Bent shaft
         3.1.2.14. Radical and conrod bearings
         3.1.2.15. Engine assembly order
         3.1.2.16. Piston rings
         3.1.2.17. Installation of a bent shaft and check of gaps of radical bearings
         3.1.2.18. Back epiploon
         3.1.2.19. Installation of conrod and piston group
         3.1.2.20. Launch of the engine after repair and a running in
   + 3.2. Diesel engine
   + 3.3. Engine electric equipment
+ 4. Cooling systems, heating
+ 5. Fuel, exhaust systems
+ 6. System of decrease in toxicity
+ 7. Transmissions
+ 8. Coupling and half shafts
+ 9. Brake system
+ 10. Suspension bracket and steering
+ 11. Body
+ 12. Electric equipment



3.1.2.17. Installation of a bent shaft and check of gaps of radical bearings

GENERAL INFORMATION

Sequence of an inhaling of bolts of covers of radical bearings


Installation of a bent shaft is the first important operation at assembly of the engine. It is meant that the block of cylinders and a bent shaft are completely cleared, checked, proshlifovana or are chiseled under the repair sizes.

PERFORMANCE ORDER
1. Arrange the block so that the lower part was turned up.
2. Turn off bolts of covers of radical bearings, get covers and spread out them as their installation.
3. Get from covers and the block of cylinders inserts of radical bearings. Wipe surfaces of the lower and top inserts with the pure fabric which is not leaving pile. These details should be preserved in full purity!
Check of gaps in radical bearings
4. Clear an external surface of the new radical inserts having oil flutes, and enclose them in beds of the block of cylinders. Enclose the corresponding reciprocal inserts in covers. Make sure that the ledge on an insert coincides with selection on the block or on a cover. Besides, the opening of the oil channel in a bed of the block of cylinders has to be combined with a lubricant opening in an insert.

Prevention

Are not allowed installation of an insert in the place by blows of the hammer, and also drawing scratches at installation. At this stage it is not required to grease an insert.


5. Persistent half rings are established in a saddle and a bed of the central insert (number 3).
6. Wipe working surfaces of inserts in the block and radical necks of a bent shaft with the pure rags which are not leaving pile. Check or clear oil channels of a bent shaft as now the only way of an exit of any pollution lies via new bearings.
7. At full confidence in purity of a shaft carefully put it in the place on inserts of radical bearings.
8. Before final installation of the crankshaft it is necessary to check a gap in radical bearings.
9. Prepare several pieces of a calibration plastic wire of "Plastigauge" which length is a little less than width of radical bearings, and put on one piece on each radical neck of the crankshaft parallel to its axis.
10. Clear surfaces of inserts in covers and establish covers in the place (do not mix them) so that shooters were turned towards a forward part of the engine. To touch a plastic wire it is not allowed. Slightly grease carvings and internal surfaces of heads of bolts, wrap bolts.
11. Tighten in three steps till the moment specified in subsection 3.1.2.1. bolts of fastening of covers, tighten bolts in the specified sequence (see rice. Sequence of an inhaling of bolts of covers of radical bearings). When tightening bolts rotation of the crankshaft is not allowed.
12. Turn off bolts of covers and carefully lift covers of radical bearings. Arrange covers as it should be corresponding to the place of their installation. To violate the provision of a calibration wire and to rotate a bent shaft it is not allowed. If removal of a cover is complicated, then displace a cover slightly having knocked sideways with the hammer with soft brisk.
13. Compare thickness of each of crushed calibration a provolok (by the widest part of a wire) with a scale on packing, determine gap size in radical bearings and compare to standard value. Do not mix a unit of measure, values of a scale are specified in inches and millimeters.
14. If the gap does not meet standard, then the wrong selection of dimensional group of inserts can be the cause (the order of selection is described in subsection 3.1.2.14. Before making the decision on replacement of inserts be convinced that at measurements there were no pollution or oil between bearings and the interfaced surfaces of covers and beds of the block of cylinders. If width of the crushed wire on the ends strongly differs, then the radical neck of the crankshaft has conicity (see subsection 3.1.2.13).
15. Carefully scratch out the remains of calibration material from necks of a bent shaft and / or from the surfaces of radical bearings. Do not allow damage of surfaces of radical bearings.
Final installation of the crankshaft
16. Carefully get a bent shaft from the block of cylinders. Clean the working surfaces of radical bearings and apply on each insert of the bearing a thin uniform layer of lubricant on the basis of a disulfide of molybdenum or oil for assembly of the engine. Grease also surfaces of persistent half rings.
17. Grease the crankshaft necks which are in contact with epiploons lubricant on the basis of a molybdenum disulfide, oil for assembly of the engine or fresh oil for the engine.
18. Be convinced of purity of necks of a bent shaft, then install it in the block of cylinders. Clear surfaces of inserts in covers and apply a thin film of lubricant on each of them. Establish covers on the former places so that shooters were turned towards a forward part of the engine.

Prevention

On each side the central bearing surely establish persistent half rings.


19. The top persistent half rings (from the block of cylinders) can be established into place by turn around a crankshaft neck when the last is installed in the block of cylinders. Flutes of half rings have to be turned outside.
20. The lower persistent half rings with adjusting ledges have to be put on covers of bearings by flutes outside so that ledges came into grooves on covers.
21. Slightly grease carvings and internal surfaces of heads of bolts of covers, wrap bolts. Tighten bolts in three steps till the moment specified in subsection 3.1.2.1 tighten bolts in the specified sequence (see rice. Sequence of an inhaling of bolts of covers of radical bearings).
22. Check freedom of rotation of the crankshaft, having turned by hand on several turns.
23. The probe or the indicator check an axial side play of the crankshaft (see subsection 3.1.2.10). If surfaces of persistent half rings are not worn-out or are not damaged or if new persistent half rings are established, then the axial side play has to meet standard.

24. Establish a new epiploon in the holder and fix the holder by bolts on the block of cylinders (see subsection 3.1.2.18).




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