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 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
|
| Diameter of the cylinder |
83 mm
|
| Piston stroke |
73 mm
|
| Volume |
2,5 liters
|
| Compression pressure in the cylinder at 250 rpm: |
| – nominal |
203 psi
|
| – minimum |
142 psi
|
| Oil pressure (the engine is warmed): |
| – 1000 rpm |
28 psi
|
| – 3000 rpm |
49 – 71 psi
|
| Head of cylinders
|
| Maximum admissible deformation |
0,098 mm
|
| Valves and springs of valves
|
| Valve border width: |
| – inlet |
0,888 mm
|
| – final |
0,985 mm
|
| Diameter of a rod of the valve: |
| – inlet |
5,878 – 5,890 mm
|
| – final |
5,872 – 5,885 mm
|
| Gap between a rod of the valve and the directing plug: |
| – inlet |
0,025 – 0,058 mm
|
| – final |
0,030 – 0,063 mm
|
| Valve spring: |
– the maximum deviation from a right angle
|
1,6 mm
|
| – length in a free state: |
| • inlet |
43,3 mm
|
| • 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): |
| – nominal |
42,863 mm
|
| – minimum |
42,667 mm
|
| Free wheeling: |
| – nominal |
0,05 – 0,10 mm
|
| – maximum |
0,14 mm
|
| Beating |
0,017 mm
|
| Diameter of a pusher |
29,488 – 29,503 mm
|
| Gap between a pusher and walls of its nest: |
| – nominal |
0,245 – 0,065 mm
|
| – maximum |
0,178 mm
|
| Valve gap (only models of 1998) |
– inlet
|
0,243 – 0,310 mm
|
| – final |
0,263 – 0,328 mm
|
| Bent shaft and rods
|
| Rod bearing: |
| – diameter |
52,108 – 52,120 mm
|
| – maximum conicity and ovality |
0,05 mm
|
| Lubricant gap of the bearing: |
| – nominal |
0,023 – 0,043 mm
|
– the most admissible
|
0,08 mm
|
| Side gap (free wheeling) of a rod: |
| – nominal |
0,175 – 0,325 mm
|
| – the most admissible |
0,400 mm
|
| Radical bearing: |
| – diameter: |
| • nominal |
60,936 – 60,980 mm
|
| • minimum |
60,965 mm
|
| – maximum conicity and ovality |
0,005 mm
|
| Lubricant gap: |
| – nominal |
0,038 – 0,055 mm
|
| – maximum |
0,063 mm
|
| Free wheeling of a bent shaft: |
| – 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: |
| – nominal |
0,030 – 0,055 mm
|
| – maximum |
0,128 mm
|
| Trailer gap of a piston ring: |
| – N1 (top) compression ring |
0,150 – 0,295 mm
|
| – N2 (average) compression ring |
0,250 – 0,375 mm
|
| – oil scraper ring |
0,200 – 0,675 mm
|
| Gap between a piston ring and a side surface of a flute of a ring: |
| – N1 (top) compression ring |
0,020 – 0,065 mm
|
| – N2 (average) compression ring |
0,030 – 0,065 mm
|
| – maximum |
0,15 mm
|
Moments of an inhaling, N. of m.
| Bolts of a cover of the radical bearing: |
| – a step 1 bolts And yes 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 lower half of the block to top * |
19 – 20
|
| Rod cover bolts: |
| – 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. |
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