Mazda 626

1991-1998 of release

Repair and operation of the car



Mazda 626

+ 1. Maintenance instruction
+ 2. Maintenance
- 3. Engines
   + 3.1. Petrol engines (1,6 and 1,8 liters)
   + 3.2. Petrol 4-cylinder engine (2 liters)
   + 3.3. Petrol V6 engine (2,5 liters)
   + 3.4. Partition of engines (1,6 and 1,8 liters)
   - 3.5. Partition of engines (2,0 and 2,5 liters of V6)
      3.5.1. Introduction
      + 3.5.2. Technical characteristics
      3.5.3. Repair work without dismantle of the engine from the car
      - 3.5.4. Capital repairs of the engine
         3.5.4.1. General comments
         3.5.4.2. Alternatives
         3.5.4.3. Sequence of dismantling
      3.5.5. Check by means of the vacuum measuring instrument
      3.5.6. Check of a compression
      3.5.7. Methods of dismantle of the engine
      3.5.8. Removal and installation of the engine
      3.5.9. Engine partition
      3.5.10. Partition and check of a head of cylinders
      3.5.11. Valves
      3.5.12. Assembly of a head of cylinders
      3.5.13. Removal of pistons and rods
      3.5.14. Removal of a bent shaft
      3.5.15. Check of the block of cylinders
      3.5.16. Honingovaniye of cylinders
      3.5.17. Check of pistons and rods
      3.5.18. Check of a bent shaft
      3.5.19. Check and selection of radical bearings and bearings of rods
      3.5.20. Check of camshafts and pushers
      3.5.21. Engine assembly order
      3.5.22. Installation of piston rings
      3.5.23. Installation of a bent shaft
      3.5.24. Installation of a back epiploon of a bent shaft
      3.5.25. Installation of pistons and rods
   + 3.6. Diesel engine 2,0 liters
   + 3.7. Systems of electric equipment of the engine
+ 4. Heating and ventilation
+ 5. Fuel system
+ 6. Exhaust system
+ 7. Transmissions
+ 8. Coupling and half shafts
+ 9. Brake system
+ 10. Running gear
+ 11. Body
+ 12. Electric equipment
+ 13. Electrical circuitries
+ 14. Useful tips

3.5.4.3. Sequence of dismantling

GENERAL INFORMATION

The easiest to disassemble the engine and to make all types of works at the figurative stand. Before installation of the engine it is necessary to shoot a flywheel with the coupling mechanism with the stand.

If there is no stand, then it is possible to disassemble the engine having strengthened it on a strong workbench or on a floor. When dismantling without stand be very careful during manipulations with the engine.

If the engine is taken to repare, then at first it is necessary to remove all units to install them subsequently just in the same order as well as at independent capital repairs. Treat such units:

 – generator and arms;
 – systems of decrease in toxicity of the fulfilled gases;
 – distributor of ignition, candle and high-voltage wires;
 – the thermostat with the case;
 – water pump;
 – carburetor;
 – inlet and final collectors;
 – oil filter;
 – fuel pump;
 – engine mount details;
 – a flywheel with the coupling mechanism.


Prevention

At removal from the engine of hinged units, with special attention treat those details which can be necessary at installation of the engine, or for auxiliary installation. Apply tags on laying, epiploons, pro-rates, shaft, washers, nuts, etc. to establish them in former situation.


If the block of cylinders of an incomplete complete set, i.e. the block of cylinders with installed by the krivoshipno-conrod mechanism and piston group is installed, then it is also necessary to remove a block head, the oil pallet and the oil pump. The list of the details which are subject to removal is defined by the accepted repair option.

If it is planned to make complete capital repairs, then the engine it is necessary to sort and remove completely engine details in the following order:

 – covers of a gear belt of a cam-shaft;
 – gear belt;
 – cover of a head of the block of cylinders;
 – forward and back covers;
 – head of the block of cylinders and cam-shaft;
 – oil pallet;
 – oil pump;
 – conrod and piston group;
 – bent shaft.

Before dismantling and performing procedures of capital repairs the following tools and the equipment will be necessary.

 – standard set of the tool;
 – штапель for removal of the remains of laying;
 – development for a razzenkovka;
 – shock stripper;
 – micrometers;
 – the arrow indicator with assembly system;
 – device for compression of springs;
 – device for a honningovaniye of cylinders;
 – the tool for cleaning of flutes of piston rings;
 – electric drill;
 – set of taps and dies;
 – wire brushes;
 – solvent.





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