Mazda 626

1991-1998 of release

Repair and operation of the car

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
      3.5.3. 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

3.5.8. Removal and installation of the engine

GENERAL INFORMATION

If you remove the engine for the first time to you it is necessary to prepare for this purpose the room, it is desirable equipped with the elevator. You need the assistant, ideally the person having special knowledge and having experience. It is also necessary to prepare all necessary tools and to observe all necessary precautionary measures during this difficult procedure.

Removal

Prevention

It is recommended to remove the engine together with the transmission, and only then to disconnect the transmission from the engine.

The models described in this manual are equipped with airbags. Before works surely disconnect system of airbags to avoid their sudden disclosure.

During the work with elements of fuel system follow fire safety regulations.

PERFORMANCE ORDER

1. Lower pressure in fuel system.
2. Disconnect a wire of the minus plug of the accumulator.
3. Remove the accumulator and its arm.
4. Remove a cowl.
5. Remove the air filter and the mud-reflecting guards.
6. Lift and fix a forward part of the car. Merge cooling liquid and engine oil. Take off driving belts.
	7. Disconnect vacuum hoses, hoses of cooling liquid, hoses of final system, a wire and fuel tubes. Mark all disconnected parts not to mix them during installation.
8. Remove the cooling radiator fans, a casing of fans and a radiator (cm. subsection 4.4). Disconnect the top and lower hoses of a radiator and hoses of a radiator of a heater from the engine.
9. Disconnect fuel tubes from the engine and close them caps.
10. In 4-cylinder models remove an arm of an inlet collector.
11. Remove a starter.
12. Remove a pulley of a bent shaft.
13. In 4-cylinder models remove the generator.
14. Disconnect ropes of various systems from the engine.
	15. Disconnect a fork (A) and wires of grounding (V) of a plait of wires of the engine.
	16. Disconnect temperature sensors and the sensor of a bent shaft. Remove an arm of a plait of wires of the engine (shooter) and arrange it aside.
	17. In 4-cylinder models disconnect wires from the breaker distributor of ignition (A), from fuel injectors (In). Weaken clamps (C) and disconnect a plait of wires from the engine.
18. Remove the pump of system of hydrostrengthening of steering (without disconnecting hoses from the pump) and arrange it away from the engine.
19. Remove the compressor of the air conditioner (do not disconnect coolant hoses from the compressor) and arrange it away from the engine.
20. Disconnect a wire of the oxygen sensor. Disconnect a final pipe(s) from a final collector(s). Remove a cross-piece and lower an exhaust pipe.
21. In 6-cylinder engines remove an oil filter, disconnect hoses from the oil heater and remove a radiator.
	22. Fix the engine on the elevator. Connect the elevator to two ears (arrow). Slightly raise the engine.
23. In 4-cylinder models with the automatic transmission remove the right leading half shaft and disconnect the dustproof screen of the hydrotransformer from the lower part of a casing of the transmission. Unscrew the bolts fixing the hydrotransformer to a drive plate and accurately press the hydrotransformer into a transmission casing.
24. In all models with the mechanical transmission the engine is removed together with a box therefore it is necessary to disconnect all wires and ropes from it. Remove half shafts.
25. Unscrew bolts and twist nuts of forward and back support of the engine.
26. In 4-cylinder engines with the automatic transmission, unscrew the bolts fixing a box to the engine, and disconnect the engine from a box. The hydrotransformer has to remain in a box casing. In all other models the engine is removed together with the transmission.
27. Check that except the left and right support of the engine, more nothing interfered it with removal.
28. Unscrew bolts of the right and left support of the engine.
29. Accurately lift the engine on the elevator and remove it from the car.
30. Lower the engine on specially equipped rack or on a workshop floor.

Installation

PERFORMANCE ORDER

1. Check a condition of support of the engine and transmission if they are worn-out, replace them.

2. In engines with the mechanical transmission, examine elements of coupling and grease press the bearing.

3. In engines with the automatic transmission, examine laying and the plug of the hydrotransformer and grease its forward part.

4. Connect the engine and the transmission and tighten bolts.

5. Install the engine and other details upside-down of removal.

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