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)
3.4.1. Introduction
3.4.2. Technical characteristics
3.4.3. Repair work without dismantle of the engine from the car
+ 3.4.4. Capital repairs of the engine
3.4.5. Checks of the engine
3.4.6. Removal and installation of the engine
3.4.7. Preparation for a partition
3.4.8. Engine partition
3.4.9. Partition and check of a head of cylinders
3.4.10. Repair of valves
3.4.11. Assembly of a head of cylinders
3.4.12. Removal of pistons and rods
3.4.13. Removal of a bent shaft
3.4.14. Check and cleaning of the block of cylinders
3.4.15. Honingovaniye of cylinders
3.4.16. Check of pistons and rods
3.4.17. Check of a bent shaft
3.4.18. Check of radical bearings and bearings of rods
3.4.19. Engine assembly order
3.4.20. Installation of piston rings
3.4.21. Installation of a bent shaft
3.4.22. Installation of a back epiploon of a bent shaft
3.4.23. Installation of pistons and rods
3.4.24. Launch of the engine after repair and a running in
+ 3.5. Partition of engines (2,0 and 2,5 liters of V6)
+ 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
|
The specifications given below are necessary only for check of technical condition of details in the procedures of repair described further.
| Engine displacement
|
| 1,6 l |
1598 cm3
|
| 1,8 l |
1840 cm3
|
| Compression pressure in the cylinder (300 rpm)
|
| 1,6 l: |
| – nominal |
13,2 Bar
|
| – minimum |
9,3 Bar
|
| – the maximum difference in pressure between cylinders |
1,9 Bar
|
| 1,8 l: |
| – nominal |
12,8 Bar
|
| – minimum |
9,6 Bar
|
| – the maximum difference of pressure between cylinders |
1,9 Bar
|
| Oil pressure (the engine is warmed)
|
| 1,6 l and 1,8 l |
2,0 – 2,9 Bars
|
| Head of cylinders
|
| Maximum deformation of a surface: |
| – 1,6 l |
0,15 mm
|
| – 1,8 l |
0,10 mm
|
| Deformation of a surface of a head adjacent to a collector |
0,15 mm
|
| Valves and elements relating to them
|
| Valve head height over a facet (minimum): |
| – 1,6 l: |
| • inlet |
0,9 mm
|
| • final |
1,0 mm
|
| – 1,8 l: |
| • inlet |
0,850 mm
|
| • final |
0,925 mm
|
| Diameter of a rod of the valve: |
| – inlet |
5,970 – 5,985 mm
|
| – final |
5,965 – 980 mm
|
| Gap between a rod of the valve and the directing plug: |
| – inlet |
0,025 – 0,060 mm
|
| – final |
0,030 – 0,065 mm
|
| – maximum gap |
0,20 mm
|
| Springs of valves
|
| Deviation limit from a right angle: |
| – 1,6 l: |
| • inlet |
1,61 mm
|
| • final |
1,50 mm
|
| Length in a free state: |
| – 1,6 l: |
| • inlet |
39,0 mm at least
|
| • final |
38,0 mm at least
|
| – 1,8 l |
39,5 mm at least
|
| Block of cylinders
|
| Diameter of the cylinder: |
| – 1,6 l: |
78,006 – 78,013 mm
|
| • 1 size |
78,256 – 78,263 mm
|
| • 2nd size |
78,506 – 78,513 mm
|
| – 1,8 l: |
83,006 – 83,013 mm
|
| • 1 size |
83,256 – 83,263 mm
|
| • 2nd size |
83,506 – 83,513 mm
|
| Camshaft and rods
|
| Diameter of bearings of the camshaft: |
| – 1,6 l |
19,943 – 19,961 mm
|
| – 1,8 l |
20,003 – 20,014 mm
|
| Bearings of rods: |
| – diameter: |
| • 1,6 l and 1,8 l |
44,940 – 44,956 mm
|
| – ovality |
0,05 mm
|
| – lubricant gap: |
| • nominal |
0,028 – 0,068 mm
|
| • extreme wear |
0,10 mm
|
| Bearing inserts
|
| Diameter: |
| – 1,6 l and 1,8 l: |
| • 44,690 – 44,706 mm |
0,25 mm
|
| • 44,440 – 44,456 mm |
0,50 mm
|
| • 44,190 – 44,206 mm |
0,75 mm
|
| Radical bearings
|
| Diameter |
49,938 – 49,956 mm
|
| Ovality |
0,05 mm
|
| Maximum wear |
0,04 mm
|
| Oil gap: |
| – nominal |
0,018 – 0,036 mm
|
| – maximum wear |
0,10 mm
|
| Inserts of bearings: |
| – diameter: |
| • 49,704 – 49,708 mm |
0,25 mm
|
| • 49,454 – 49,458 mm |
0,50 mm
|
| • 49,204 – 49,208 mm |
0,75 mm (not for 1,6 l)
|
| Side gap of a rod: |
| – nominal |
0,110 – 0,262 mm
|
| – maximum wear |
0,30 mm
|
| Free wheeling of a bent shaft: |
| – nominal |
0,080 – 0,282 mm
|
| – maximum wear |
0,30 mm
|
| Thickness of a persistent washer |
2,500 – 2,925 mm
|
| Ovality |
0,019 mm
|
| Pistons and piston rings
|
| Diameter of the piston: |
| – 1,6 l: |
77,954 – 77,974 mm
|
| • 1 dimension |
78,211 – 78,217 mm
|
| • 2nd dimension |
78,461 – 78,467 mm
|
| – 1,8 l: |
82,954 – 82,974 mm
|
| • 1 dimension |
83,211 – 83,217 mm
|
| • 2nd dimension |
83,461 – 83,467 mm
|
| Gap between the piston and the cylinder: |
| – nominal |
0,039 – 0,052 mm
|
| – maximum wear |
0,15 mm
|
| Trailer gap: |
| – top compression ring |
0,15 – 0,30 mm
|
| – second compression ring |
0,15 – 0,30 mm
|
| – oil scraper ring |
0,20 – 0,70 mm
|
| – maximum wear |
1,0 mm
|
| Gap between a ring and a flute: |
| – 1,6 l: |
| • top compression ring |
0,030 – 0,070 mm
|
| • second compression ring |
0,030 – 0,070 mm
|
| • maximum wear |
0,15 mm
|
| – 1,8 l: |
| • top compression ring |
0,030 – 0,65 mm
|
| • second compression ring |
0,030 – 0,070 mm
|
| • maximum wear |
0,15 mm
|
Moments of an inhaling, N. of m.
| Bolts and nuts of covers of rods: |
| – 1,6 l |
47 – 52
|
| – 1,8 l |
50 – 54
|
| Bolts of covers of radical bearings |
54 – 58
|
| Oil jets |
12 – 18
|
* For more information see subsection 3.1.2.
|
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