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
      3.5.5. 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


3.5.15. Check of the block of cylinders

1. Turn caps in openings, having struck with a stupid core a side part of each cap.
2. Take plastic caps from the block.
3. By means of a plastic scraper clean off all traces of sealant from the joined surface of the block of cylinders.
4. Unscrew or drill caps of oil channels from the block of cylinders. Use new caps during assembly.
5. If the block too dirty, it it is necessary to clean in a specialized workshop.
6. Clean and wash out oil openings and channels warm water. Dry openings and channels, having blown them compressed air. Oil the block rust proof.
7. Clean carvings of openings in the block by means of taps of the necessary size. Clean bolts of a head of cylinders and bolts of radical bearings.
8. Establish covers of radical bearings and twist bolts.
9. By means of the special tool hammer new, greased with sealant, caps into block openings.
10. Apply sealant on caps of oil channels and twist them in the block.
11. Examine the block on existence of cracks and traces of corrosion or a rust. Examine carvings of openings of the block. At detection of defects, the block needs to be repaired or replaced whenever possible.
12. Examine cylinders.
13. Check cylinders for conicity and ovality.
14. Measure diameter of each cylinder in top average and lower its parts, parallel to an axis of a bent shaft.
15. Measure diameter of each of cylinders perpendicular to the central line (A) and parallel to the central line (V) (1 – the central line of the engine)
16. Measure diameter of the cylinder by means of the telescopic measuring instrument.
17. Measure length of the telescopic measuring instrument by means of a micrometer.
18. Measure diameter of each cylinder in top average and lower its parts, perpendicular to an axis of a bent shaft.
19. Conicity of the cylinder is calculated as a difference between the top and lower diameters. Ovality – as a difference between parallel and perpendicular measurements.
20. If the received results do not coincide with technical requirements (subsection 3.5.2.), cylinders need to be processed in a specialized workshop.

21. By means of a ruler and probes check whether the surface of the block which is joined to a head is deformed.
22. Check wear of pistons and cylinders by means of probes. When finding wear or damages at survey of the block, address experts.

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