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 engine dismantle from the car + 3.4.4. Major maintenance of the engine 3.4.5. Engine checks 3.4.6. Removal and engine installation 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 cranked 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 cranked 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 cranked shaft 3.4.22. Installation of a back epiploon of a cranked shaft 3.4.23. Installation of pistons and rods 3.4.24. Engine start-up after repair and a running in + 3.5. Partition of engines (2,0 and 2,5 liters of V6) + 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
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The specifications provided below are necessary only for check of a technical condition of details in procedures of repair described further.
Engine displacement
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1,6 l |
1598 cm3
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1,8 l |
1840 cm3
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Pressure of compression in the cylinder (300 rpm)
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1,6 l: |
– the nominal |
13,2 Bar
|
– the minimum |
9,3 Bar
|
– the maximum difference in pressure between cylinders |
1,9 Bar
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1,8 l: |
– the nominal |
12,8 Bar
|
– the minimum |
9,6 Bar
|
– the maximum difference of pressure between cylinders |
1,9 Bar
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Pressure of oil (the engine is warmed up)
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1,6 l and 1,8 l |
2,0-2,9 Bar
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Head of cylinders
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Maximum deformation of a surface: |
– 1,6 l |
0,15 mm
|
– 1,8 l |
0,10 mm
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Deformation of a surface of the head adjacent to collector |
0,15 mm
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Valves and elements relating to them
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Height of a head of the valve over a facet (minimum): |
– 1,6 l: |
• the inlet |
0,9 mm
|
• the final |
1,0 mm
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– 1,8 l: |
• the inlet |
0,850 mm
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• the final |
0,925 mm
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Diameter of a rod of the valve: |
– the inlet |
5,970-5,985 mm
|
– the final |
5,965-980 mm
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Gap between a rod of the valve and the directing plug: |
– the inlet |
0,025-0,060 mm
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– the final |
0,030-0,065 mm
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– maximum gap |
0,20 mm
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Springs of valves
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Deviation limit from a right angle: |
– 1,6 l: |
• the inlet |
1,61 mm
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• the final |
1,50 mm
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Length in a free condition: |
– 1,6 l: |
• the inlet |
39,0 mm at least
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• the final |
38,0 mm at least
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– 1,8 l |
39,5 mm at least
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Block of cylinders
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Diameter of the cylinder: |
– 1,6 l: |
78,006-78,013 mm
|
• 1 size |
78,256-78,263 mm
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• 2nd size |
78,506-78,513 mm
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– 1,8 l: |
83,006-83,013 mm
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• 1 size |
83,256-83,263 mm
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• 2nd size |
83,506-83,513 mm
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Camshaft and rods
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Diameter of bearings of a camshaft: |
– 1,6 l |
19,943-19,961 mm
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– 1,8 l |
20,003-20,014 mm
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Bearings of rods: |
– diameter: |
• 1,6 l and 1,8 l |
44,940-44,956 mm
|
– ovality |
0,05 mm
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– lubricant gap: |
• the nominal |
0,028-0,068 mm
|
• limiting wear |
0,10 mm
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Bearing loose leaves
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Diameter: |
– 1,6 l and 1,8 l: |
• 44,690-44,706 mm |
0,25 mm
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• 44,440-44,456 mm |
0,50 mm
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• 44,190-44,206 mm |
0,75 mm
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Radical bearings
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Diameter |
49,938-49,956 mm
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Ovality |
0,05 mm
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Maximum wear |
0,04 mm
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Oil gap: |
– the nominal |
0,018-0,036 mm
|
– maximum wear |
0,10 mm
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Loose leaves of bearings: |
– diameter: |
• 49,704-49,708 mm |
0,25 mm
|
• 49,454-49,458 mm |
0,50 mm
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• 49,204-49,208 mm |
0,75 mm (not for 1,6 l)
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Lateral gap of a rod: |
– the nominal |
0,110-0,262 mm
|
– maximum wear |
0,30 mm
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Free wheeling of a cranked shaft: |
– the nominal |
0,080-0,282 mm
|
– maximum wear |
0,30 mm
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Thickness of a persistent washer |
2,500-2,925 mm
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Ovality |
0,019 mm
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Pistons and piston rings
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Diameter of the piston: |
– 1,6 l: |
77,954-77,974 mm
|
• 1 dimension |
78,211-78,217 mm
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• 2nd dimension |
78,461-78,467 mm
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– 1,8 l: |
82,954-82,974 mm
|
• 1 dimension |
83,211-83,217 mm
|
• 2nd dimension |
83,461-83,467 mm
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Gap between the piston and the cylinder: |
– the nominal |
0,039-0,052 mm
|
– maximum wear |
0,15 mm
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Trailer gap: |
– top kompressionny ring |
0,15-0,30 mm
|
– second kompressionny ring |
0,15-0,30 mm
|
– maslosjemny ring |
0,20-0,70 mm
|
– maximum wear |
1,0 mm
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Gap between a ring and a flute: |
– 1,6 l: |
• top kompressionny ring |
0,030-0,070 mm
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• second kompressionny ring |
0,030-0,070 mm
|
• maximum wear |
0,15 mm
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– 1,8 l: |
• top kompressionny ring |
0,030-0,65 mm
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• second kompressionny ring |
0,030-0,070 mm
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• maximum wear |
0,15 mm
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Moments of an inhaling, N of m.
Bolts and nuts of covers of rods: |
– 1,6 l |
47-52
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– 1,8 l |
50-54
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Bolts of covers of radical bearings |
54-58
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Oil jets |
12-18
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* For more information see subsection 3.1.2.
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