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
3.5.2.1. 4-cylinder engines
3.5.2.2. 6-cylinder engines
3.5.3. Repair work without engine dismantle from the car
+ 3.5.4. Major maintenance of the engine
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
|
| Diameter of the cylinder |
83 mm
|
| Piston stroke |
73 mm
|
| Volume |
2,5 liters
|
| Pressure of compression in the cylinder at 250 rpm: |
| – the nominal |
203 psi
|
| – the minimum |
142 psi
|
| Pressure of oil (the engine is warmed up): |
| – 1000 rpm |
28 psi
|
| – 3000 rpm |
49-71 psi
|
| Head of cylinders
|
| Maximum admissible deformation |
0,098 mm
|
| Valves and springs of valves
|
| Width of a border of the valve: |
| – the inlet |
0,888 mm
|
| – the final |
0,985 mm
|
| Diameter of a rod of the valve: |
| – the inlet |
5,878-5,890 mm
|
| – the final |
5,872-5,885 mm
|
| Gap between a rod of the valve and the directing plug: |
| – the inlet |
0,025-0,058 mm
|
| – the final |
0,030-0,063 mm
|
| Valve spring: |
– the maximum deviation from a right angle
|
1,6 mm
|
| – length in a free condition: |
| • the inlet |
43,3 mm
|
| • the final |
46,2 mm
|
| Camshafts and pushers of valves
|
| Diameter of a neck of the bearing |
| Back block of cylinders: |
| – N1: |
| • inlet valve |
29,502-29,528 mm
|
| • final valve |
25,532-25,550 mm
|
– N2, 3 and 4
|
25,502-25,525 mm
|
– N5
|
25,532-25,550 mm
|
| Forward block of cylinders: |
| – N1: |
| • inlet valve |
25,502-25,550 mm
|
• final valve
|
29,505-29,522 mm
|
| – N2, 3 and 4 |
25,502-25,525 mm
|
| – N5 |
25,502-25,550 mm
|
| Lubricant gap of the bearing: |
| – N1 and 5 |
0,04-0,08 mm
|
| – N2, 3 and 4 |
0,07-0,11 mm
|
| Cam height (inlet and final valves): |
| – the nominal |
42,863 mm
|
| – the minimum |
42,667 mm
|
| Free wheeling: |
| – the nominal |
0,05-0,10 mm
|
| – the maximum |
0,14 mm
|
| Palpation |
0,017 mm
|
| Diameter of a pusher |
29,488-29,503 mm
|
| Gap between a pusher and walls of its nest: |
| – the nominal |
0,245-0,065 mm
|
| – the maximum |
0,178 mm
|
| Valve gap (only models of 1998 g) |
– the inlet
|
0,243-0,310 mm
|
| – the final |
0,263-0,328 mm
|
| Cranked shaft and rods
|
| Rod bearing: |
| – diameter |
52,108-52,120 mm
|
| – maximum konusnost and ovality |
0,05 mm
|
| Lubricant gap of the bearing: |
| – the nominal |
0,023-0,043 mm
|
– the most admissible
|
0,08 mm
|
| Lateral gap (free wheeling) of a rod: |
| – the nominal |
0,175-0,325 mm
|
| – the most admissible |
0,400 mm
|
| Radical bearing: |
| – diameter: |
| • the nominal |
60,936-60,980 mm
|
| • the minimum |
60,965 mm
|
| – maximum konusnost and ovality |
0,005 mm
|
| Lubricant gap: |
| – the nominal |
0,038-0,055 mm
|
| – the maximum |
0,063 mm
|
| Free wheeling of a cranked shaft: |
| – the nominal |
0,08-0,28 mm
|
| – the most admissible |
0,31 mm
|
| Thickness of a persistent half ring |
1,970-2,018 mm
|
| Block of cylinders
|
| Maximum admissible deformation of a surface of the block of cylinders |
0,148 mm
|
| Diameter of the cylinder |
83,17-83,19 mm
|
| Pistons, piston rings
|
| Diameter of the piston (nominal) |
83,125-81,525 mm
|
| Gap between the piston and the cylinder: |
| – the nominal |
0,030-0,055 mm
|
| – the maximum |
0,128 mm
|
| Trailer gap of a piston ring: |
| – N1 (top) kompressionny ring |
0,150-0,295 mm
|
| – N2 (average) kompressionny ring |
0,250-0,375 mm
|
| – maslosjemny ring |
0,200-0,675 mm
|
| Gap between a piston ring and a lateral surface of a flute of a ring: |
| – N1 (top) kompressionny ring |
0,020-0,065 mm
|
| – N2 (average) kompressionny ring |
0,030-0,065 mm
|
| – the maximum |
0,15 mm
|
Moments of an inhaling, N of m.
| Bolts of a cover of the radical bearing: |
| – a step 1 bolts And and In |
23-26
|
| – a step the 2nd bolts With |
18-20
|
– step 3rd bolts And
|
Tighten for 80 °
|
| – a step the 4th bolts In |
Tighten for 70 °
|
| – a step the 5th bolts With |
Tighten for 60 °
|
| – a step the 6th bolts And, In and With |
Repeat steps 3, 4 and 5
|
| The bolts, fixing the bottom half of the block to верхней* |
19-20
|
| Bolts of a cover of a rod: |
| – step 1 |
22-26
|
| – step 2 |
Tighten for 90 °
|
* See subsection 3.2.2 for additional information.
** Tighten only after tightened bolts of covers of radical bearings. |
|