4.2.3. Removal, check of a state and installation of a gas-distributing belt and its natyazhitel
Removal
Components of the drive of the gas-distributing mechanism and detail of fixture of its covers are shown on an accompanying illustration.
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- Turn a bent shaft, having given the engine the provision of VMT of the end of a step of compression of the first cylinder. In this situation the tag on a pulley of a bent shaft will be combined with the index on a cover of a gas-distributing belt, and the runner of the distributor will turn a nose towards an arrangement of the VV plug of a wire of a spark plug of the first cylinder.
- Disconnect a negative wire from the battery.
- Empty the cooling system and remove a radiator and assembly of the fan.
- Take off driving belts from pulleys of the steering pump, generator and compressor of the conditioner of air (if the last is included in the car package).
- Give a bolt of fastening of a pulley of a bent shaft. For blocking of a pulley from a provorachivaniye it is possible to use an old driving belt and the lever.
- By means of a stripper remove a pulley of a bent shaft from the engine.
- Release wire VV from clamps on the top cover of a gas-distributing belt.
- Disconnect hoses of a coal adsorber and the distributor from tubes in a forward part of a cover of a gas-distributing belt and shift them aside, having removed from a working zone.
- Give fixing bolts of the top cover of a gas-distributing belt, shift towards VV of a wire and uncover the engine.
- Give fixing bolts and remove a forward lower cover of a gas-distributing belt from the engine.
- Remove the directing plate of a gas-distributing belt from a cogwheel of a bent shaft and make sure of combination of a distributive tag on a cogwheel with a reciprocal tag on the case of the oil pump.
- If further use of a gas-distributing belt is supposed, mark with an arrow the direction of its rotation. Also mark an arrangement concerning a belt of distributive tags of cogwheels of cranked and distributive shaft.
- Weaken a lock nut of a natyazhitel of a gas-distributing belt, then turn a natyazhitel by means of a suitable prutkovy key and again record it a lock-nut.
- Take off a gas-distributing belt from cogwheels of cranked and distributive shaft.
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After removal of a gas-distributing belt do not allow a provorachivaniye of cranked and distributive shaft in order to avoid damage of pistons and valves at blow their friend about the friend. |
- Give a lock-nut of a natyazhitel of a gas-distributing belt and remove a natyazhitel with a spring from the engine. Try to remember an order of installation of wavy and flat washers of a natyazhitel.
- Uncover a head of cylinders and weaken bolts of fastening of axes of yokes. This procedure is necessary for the correct tension of a gas-distributing belt at its installation.
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Check of a state
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- Wipe a gas-distributing belt and components of a natyazhitel with pure dry rags.
- Examine a belt on existence of characteristic defects (see an accompanying illustration).
- Check a spring of a natyazhitel for existence of signs of wear, deformation and other damages.
- Manually check freedom of rotation of a tension roller, having estimated thereby a condition of its bearing.
- Check a condition of a contact surface of a tension roller.
- Check whether fixing bolts are damaged.
- Replace all worn-out or defective components.
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Installation
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- Make sure that the engine still is in the provision of VMT of the end of a step of compression of the first cylinder. In case of need correct the provision of a bent shaft.
- Make sure that the directing pin on the camshaft is in the top point of an epyura of the movement.
- Establish a natyazhitel with a spring on a forward part of the block of cylinders. Track that the end of a spring entered gearing with a hairpin so that that the belt tension was provided.
- Establish at first a flat washer, then wavy (the concave party to a natyazhitel). By means of a prutkovy key take a tension roller aside from a belt and temporarily tighten a lock-nut.
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- If the new belt is established, it has to be equipped with landing tags. Otherwise mark one of dredging between teeth of a belt and count from this situation 53 dredging back. Mark also this 53rd dredging (see an accompanying illustration).
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At installation of an old belt it is necessary to observe former the direction of its rotation. |
- Put on a gas-distributing belt cogwheels of distributive and cranked shaft, having tracked combination of tags on a belt with tags on wheels and respect for correctness of rotation of a belt (if old is established).
- Weaken a lock-nut of a natyazhitel and allow the last to pull a belt.
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Fixing bolts of assembly of yokes have to be weakened as it was mentioned above, otherwise the effort of a tension of a belt will not be correct. |
- By means of a prutkovy key shake a natyazhitel two-three times in both directions, having convinced of adequacy of effort of a tension of a belt.
- Having blocked a natyazhitel in this situation a prutkovy key, tighten its lock-nut with the required effort.
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In order to avoid emergence of noise and/or acceleration of wear of a belt, it is not necessary to establish effort of a tension of a belt by big what the effort developed by a spring of a natyazhitel. |
- At the directing pin of the camshaft located in the top point of an epyura of the course tighten bolts of axes of yokes of the fourth, fifth and sixth cylinders with the required effort.
- By means of the wrench which is put on a bolt of a pulley of a bent shaft turn the engine clockwise so that the directing pin fell to the lower situation. Now tighten bolts of axes of yokes of the first, second and third cylinders with the required effort.
- For the last check turn the engine further clockwise, having returned the directing camshaft pin to the top situation and make sure that bolts of fastening of all axes of yokes are tightened with the required effort.
- Establish the directing plate of a gas-distributing belt on a pulley of a bent shaft, the concave party outside. Establish the top and lower covers of a gas-distributing belt. Track correctness of installation of sealants. Tighten fixing bolts with the required effort.
- Establish a cover of a head of cylinders.
- Install the remained components as it should be, the return to an order of their dismantle, paying attention to the next moments:
- Establish a pulley of the water pump, the fan and a radiator of the cooling system according to instructions;
- Adjust a tension of driving belts.
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