Mazda 626

1991-1998 of release

Repair and car operation

Mazda 626

+ 1. Maintenance instruction
+ 2. Maintenance
- 3. Engines
   - 3.1. Petrol engines (1,6 and 1,8 liters)
      3.1.1. Introduction
      3.1.2. Technical characteristics
      3.1.3. Recommendations about repair
      3.1.4. Top dead point
      3.1.5. Cover of valves
      3.1.6. Inlet collector
      3.1.7. Final collector
      3.1.8. Gas-distributing belt and asterisks
      3.1.9. Camshaft epiploons
      3.1.10. Yokes and distributive (е) shaft (ы)
      3.1.11. Springs of valves, fastenings and laying
      3.1.12. Head of cylinders
      3.1.13. Oil pallet
      3.1.14. Forward cover
      3.1.15. Oil pump
      3.1.16. Forward epiploon of a cranked shaft
      3.1.17. Flywheel
      3.1.18. Back epiploon of a cranked shaft
      3.1.19. Engine fastenings
   + 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)
   + 3.6. 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

3.1.12. Head of cylinders


Sequence of a tightening of bolts of a head of cylinders


1. Disconnect a wire of the minus plug of the accumulator.
2. Unscrew spark plugs.
3. Merge cooling liquid.
4. Remove an airintaking branch pipe.
5. Remove the resonator.
6. Remove throttle and accelerator ropes.
7. Remove a vacuum hose of brake system, a fuel hose, radiator hoses, a vacuum hose of system cruise control and heater hoses.
8. Disconnect all wires from a head.
9. Unscrew bolts and nuts of a water tube.
10. Remove a pulley of the water pump and a driving belt.
11. Remove an air inlet and the fuel highway.
12. Remove an inlet collector.
13. Disconnect an exhaust pipe from a final collector.
14. Uncover valves.

15. Remove covers of a gas-distributing belt and a gas-distributing belt.

16. Remove driving belts of the pump of the power steering and the generator.
17. Remove a generator arm.
18. Remove the ignition distributor.
19. Unscrew bolts of the pump of the power steering and arrange the pump aside.

20. Examine a head and disconnect details heads stirring to removal.

21. Weaken head bolts in stages on a turn quarter. Weaken bolts in sequence of return sequence of a tightening.
22. Remove bolts and remove a head.

23. Examine a head.


1. Carefully clean and examine on existence of scratches and damages being joined surfaces of a head and the block of cylinders. Small scratches can be cleaned off a small emery paper.
2. Clean carvings of bolts of a head and a carving in the block of cylinders by means of dies and taps of the suitable size.
3. Establish new laying of a head.
4. Establish a head on the block of cylinders.
5. Oil carvings of bolts, insert bolts and tighten them fingers.
6. Tighten bolts in stages in the specified sequence.

7. Establish the remained details and knots, connect all hoses and wires. Fill in cooling liquid and check operation of the engine.