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)
      3.2.1. Introduction
      3.2.2. Technical characteristics
      3.2.3. Recommendations about repair
      3.2.4. Top dead point
      3.2.5. Cover of a head of cylinders
      3.2.6. Springs, clamps and epiploons of valves
      3.2.7. Gas-distributing belt and asterisks
      3.2.8. Camshafts and pushers
      3.2.9. Inlet collector
      3.2.10. Final collector
      3.2.11. Head of cylinders
      3.2.12. Forward epiploon of a bent shaft
      3.2.13. Oil pallet
      3.2.14. Oil pump
      3.2.15. Flywheel or drive plate
      3.2.16. Back epiploon of a bent shaft
      3.2.17. Fastenings of the engine
   + 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 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


3.2.7. Gas-distributing belt and asterisks

GENERAL INFORMATION

Wear and damages of a gas-distributing belt

1. Stratification

2. There is no tooth

3. The surface is worn-out

4. The rounded-off side

Removal

PERFORMANCE ORDER
1. Disconnect a wire of the minus plug of the accumulator.
2. Uncover a head of cylinders.
3. Unscrew spark plugs from all cylinders.
4. Weaken a bolt of a pulley of the water pump. Take off a driving belt of the pump of system of hydrostrengthening of a wheel and the compressor of the air conditioner and a driving belt of the generator. Remove a pulley of the water pump.
5. Put the car on the emergency brake and block back wheels. Lift and fix a forward part of the car.
6. Remove the right forward wheel.
7. Remove a mudguard of the right forward wing.
8. Remove a pulley of a bent shaft.
9. Establish a jack under the engine. Slightly raise the engine and remove its right support.
10. Unscrew bolts and remove the top cover of a gas-distributing belt and a tube of the probe for measurement of level of oil.
11. Remove a guide of a gas-distributing belt (A) and bolts of the lower cover (In).
12. Turn a bent shaft and combine synchronizing tags of asterisks of a bent shaft.
13. Combine synchronizing tags of asterisks of camshafts.
14. Asterisks of camshafts have synchronizing tags and on a back surface.
15. If you are going to reuse a gas-distributing belt, make on it the tag specifying the direction of its rotation.
16. By means of the special tool you can block asterisks of camshafts and simplify the further work which is carried out with a gas-distributing belt.
17. Weaken a tension of a gas-distributing belt. Turn a pulley of a natyazhitel and remove a spring.
18. Take off a gas-distributing belt.
19. If necessary remove an asterisk of a bent shaft and the sensor of a bent shaft.
20. If necessary stop the camshaft a wrench, unscrew bolts and remove asterisks of camshafts. The asterisk of the camshaft of inlet valves on a forward surface has a tag of "I", and the asterisk of a shaft of final valves has the tag "Е".

Check


Prevention

Until the gas-distributing belt is taken off, try not to rotate cranked and camshafts.


PERFORMANCE ORDER
1. Examine bearings of an intermediate pulley and pulley of a natyazhitel, check whether freely they rotate. Examine a spring of a natyazhitel. If necessary replace the worn-out or damaged details.
2. If the gas-distributing belt was strongly damaged, carefully clean all asterisks on which it was established.
3. If on a belt there are cracked or torn off teeth, so jam camshafts or shaft of water and oil pumps.
4. If the belt is strongly worn-out, examine asterisks on existence of scratches and an agnail.
5. If the belt is worn-out only on the one hand, check a guide of a belt and check centering of asterisks.
6. At wear detection surely replace a gas-distributing belt.

Installation

PERFORMANCE ORDER
1. Carefully clean area of installation of a gas-distributing belt in a forward part of the engine.
2. Establish a pulley of a natyazhitel and an intermediate pulley.
3. Establish asterisks of camshafts and an asterisk of a bent shaft.
4. Combine synchronizing tags of asterisks.
5. Put on a gas-distributing belt asterisks and pulleys. also remove the tool blocking asterisks of camshafts.
6. Turn a pulley of a natyazhitel and establish a spring.
7. Turn a bent shaft on two whole revolutions and check synchronizing tags. When you rotate a bent shaft, stop if you feel resistance. Most likely, because of the wrong combination of tags, valves concern pistons. Recheck installation of tags and only then continue.
8. Establish the remained details, start the engine and check its work.



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