Peugeot 406

since 1996 release

Repair and operation of the car



Peugeot 406
+ 1. Maintenance instruction
+ 2. Maintenance
- 3. Engine
   + 3.1. Petrol engines
   + 3.2. Diesel engines
   - 3.3. Repair of the engine
      3.3.1. Technical data
      3.3.2. Removal and installation of the engine and transmission
      3.3.3. Removal and installation of engines with the automatic transmission
      3.3.4. Repair of the engine
      3.3.5. Removal and installation of a head of the block of cylinders
      3.3.6. Dismantling of a head of the block of cylinders
      3.3.7. Cleaning and survey of a head of the block of cylinders
      3.3.8. Assembly of a head of the block of cylinders
      3.3.9. Removal of pistons with rods
      3.3.10. Removal of the crankshaft
      3.3.11. Block of cylinders
      3.3.12. Pistons and rods
      3.3.13. Crankshaft
      3.3.14. Survey of radical and conrod bearings
      3.3.15. Engine balance of assembly at capital repairs
      3.3.16. Installation of piston rings
      + 3.3.17. Installation of the crankshaft and check of working gaps of radical bearings
      - 3.3.18. Installation of pistons
         3.3.18.1. Choice of an insert of the bearing
         3.3.18.2. Check of a working gap of an insert of the conrod bearing
      3.3.19. Start of the engine after capital repairs
+ 4. Cooling systems, heating and ventilation
+ 5. Fuel system
+ 6. System of ignition
+ 7. Coupling
+ 8. Transmissions
+ 9. Power shafts
+ 10. Brake system
+ 11. Suspension bracket and steering
+ 12. Body
+ 13. Electric equipment
+ 14. Main malfunctions


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3.3.18.2. Check of a working gap of an insert of the conrod bearing

PERFORMANCE ORDER
1. Clear connecting rods and their nests. The working gap can be checked by two methods.
2. One of methods (which assumes existence of a micrometer for measurement of diameter of openings) consists in establishing covers of conrod bearings together with an insert on a rod and to screw them the required moment. At installation of an insert in a rod the ledge on an insert (shooter) has to be established in a groove on a rod.
3. Measure the internal diameter of each collected couple of inserts of the bearing. Measure diameter of each conrod neck of the crankshaft. Subtract the corresponding diameter of a conrod neck of the crankshaft from the measured diameter of the bearing.
4. The second (and more exact method) consists in using the product known as Plastigage. It is a round plastic core which contracts between an insert and a neck of the crankshaft. After removal of a cover of the conrod bearing the deformed plastic core is measured by a special template which is available in Plastigage set. The procedure for Plastigage use following.
5. Establish a rod with an insert on the corresponding neck of the crankshaft. Necks of the crankshaft and inserts have to be absolutely pure and dry.
6. Cut off a piece of a plastic core of Plastigage (it has to be slightly shorter, than width of conrod bearings) and establish it on the measured crankshaft neck.
7. Establish conrod 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 the crankshaft.
8. Unscrew a conrod cover of fastening of an insert, remove it and apply the large-scale ruler printed on packing to the deformed plastic core. Comparing width of the deformed plastic core to control width on a large-scale ruler, determine gap size.
9. In conclusion carefully clear traces of Plastigage of material from inserts and the crankshaft.
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