Mazda 626

1991-1998 of release

Repair and car operation



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 engine dismantle from the car
      - 3.5.4. Major maintenance 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 a vacuum measuring instrument
      3.5.6. Compression check
      3.5.7. Methods of dismantle of the engine
      3.5.8. Removal and engine installation
      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 cranked 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 cranked 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 cranked shaft
      3.5.24. Installation of a back epiploon of a cranked shaft
      3.5.25. Installation of pistons and rods
   + 3.6. Diesel engine of 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 semi-axes
+ 9. Brake system
+ 10. Running gear
+ 11. Body
+ 12. Electric equipment
+ 13. Electroschemes
+ 14. Good advice



3.5.4.3. Sequence of dismantling

GENERAL INFORMATION

It is most easier to assort the engine and to make all types of works at the figurative stand. Before engine installation it is necessary to shoot a flywheel with the stand with the coupling mechanism.

If the stand is not present, to assort the engine it is possible having strengthened it on a strong workbench or on a floor. When dismantling without the stand be very careful during manipulations with the engine.

If the engine is given in repair, at first it is necessary to remove all units to establish them subsequently precisely in the same order as well as at independent major maintenance. Such units treat:

 – 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 engine installation, or for auxiliary installation. Put labels 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 established by the krivoshipno-shatunny mechanism and piston group is established, it is necessary to remove also a block head, the oil pallet and the oil pump. The list of details subject to removal is defined by the accepted option of repair.

If it is planned to carry out complete major maintenance, the engine it is necessary to disassemble 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;
 – shatunno-piston group;
 – cranked shaft.

Before dismantling and performance of procedures of major maintenance 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 strelochny indicator with assembly system;
 – the adaptation for compression of springs;
 – the adaptation for a honningovaniye of cylinders;
 – the tool for cleaning of flutes of piston rings;
 – electrodrill;
 – set of taps and dies;
 – wire brushes;
 – solvent.