Audi A4, S4
+ Introduction
+ Controls and receptions of safe operation
+ Current leaving and service
- The engine
Specifications
Removal and installation of the top cover of the engine / the bottom protection of an impellent compartment/stretcher
Compression check in engine cylinders, revealing of leaks
Check of the engine by means of the vacuum gauge
+ 4-cylinder petrol engines
+ 6 and 8-cylinder petrol engines
- 4-cylinder diesel engines
The general data
Removal and installation of a gear belt, engines of 1.9 l (AVB, AWX, AVF)
Натяжитель a belt with демпфированием a friction
Removal and installation of a head of cylinders, diesel engines of 1.9 l (AVB, AWX, AVF)
Removal and installation of a belt of a drive of auxiliary units
+ 6-cylinder diesel engines
+ System of greasing of the engine
+ Systems of cooling, heating and the air conditioner
+ Power supply systems, release and decrease in toxicity of the fulfilled gases
+ Systems of an electric equipment of the engine
+ Manual box of a gear change
+ Automatic transmission
+ Coupling, power shafts and differential
+ Brake system
+ Suspension bracket and steering
+ Body
+ Onboard electric equipment
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Removal and installation of a gear belt, engines of 1.9 l (AVB, AWX, AVF) The description concerns a drive a gear belt with hydraulic демпфированием a tension roller. Its sign is presence демпфера (12). Instructions for a drive a gear belt with the tension roller having демпфирование by a friction, are resulted in the end of the Head.
Zubchatoremyonnyj drive ГРМ. Diesel engines of 1.9 l (AVB, AWX, AVF)
Removal
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- Establish the forward panel in position for service, address to Section Installation of the forward panel in position for maintenance service.
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- Take out the index of level of oil (1) of a directing pipe.
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- Disconnect covers and turn away nuts (arrow) lying under them.
- Remove the top cover of the engine.
- Remove lying under it демпфер.
- Again insert against the stop the index of level of oil.
- Remove клиновой a belt, address to Section Removal and installation of a belt of a drive of auxiliary units.
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- Keeping a pulley of the fan with вязкостной муфтой by means of the tool 3212, turn on its face key on 8 mm (1) from the holder.
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- Remove the fan with вязкостной муфтой and put it in a fan casing.
- Remove the generator and take out the fan with вязкостной муфтой from a casing, address to Section Removal and generator installation.
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- Turn out screws (1) and (2) and remove the tension device клинового a belt.
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- Remove the top cover of a gear belt.
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- Turn out screws (3) and uncover (2).
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- Take aside the electromagnetic valve of adjustment of pressure of pressurisation (1).
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- Uncover at a pulley of a cranked shaft (демпфер крутильных fluctuations) and turn away a pulley.
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For отворачивания and pulley fastenings keep it накидным a key for the central bolt. |
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- Disconnect the central and bottom covers of a gear belt (an arrow on an accompanying illustration).
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The cranked shaft is authorised to be turned only in a direction of rotation of the engine, i.e. clockwise. The cranked shaft by a key for the central bolt is turned. |
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- Turn a cranked shaft and establish it in position ВМТ of the first cylinder. Thus the interval between pads (1) on a rotor of the gauge of a camshaft should lie against marks «4Z» (2) on a back cover of a gear belt.
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On an accompanying illustration for descriptive reasons the wheel is shown without a gear belt. |
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- Fix a nave finger HAZET 2588-3.
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Instead of the specified finger it is possible to apply оправку in diameter 6 mm. |
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- Fix a pulley of a cranked shaft finger HAZET 2588-1. For this purpose insert the special tool (a stopper of a cranked shaft) from an end face of a wheel of a gear belt into its gear wreath.
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Labels on a cogwheel of a cranked shaft (2) and the fixing tool (1) should be opposite each other. Thus the tool pin should enter into an aperture of a sealing flange. If such tool available is not present, put on a sealing flange label ВМТ. |
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- Turn away bolts of fastening (arrow) so that a camshaft wheel it was turned in oblong apertures.
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- Insert a face key against the stop in шестигранное an aperture of a tension roller and turn a tension roller counter-clockwise (an arrow direction on an accompanying illustration) so that the tension device could be fixed lock lath HAZET 2588-2.
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The face key is inserted against the stop that it has not been damaged at turn of a tension roller. |
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The tension element of a gear belt has oil демпфирование and to press it follows in regular intervals, without the appendix of considerable efforts. |
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- If the gear belt which was in work is established, note on it a chalk or a felt-tip pen a rotation direction.
- Turn away a nut of fastening of a tension roller.
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- Turn out bolts (arrows on an accompanying illustration) the tension device of a gear belt and remove the tension device.
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- Remove a gear belt.
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Installation (adjustment of phases timing)
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- Check up, whether are fixed a camshaft by finger HAZET 2588-3, and a cranked shaft stopper HAZET 2588-1, and also whether the device of a tension of a gear belt by lock plate HAZET 2588-2 is fixed.
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Adjusting works with a gear belt are authorised to be made only on the cold engine. |
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At проворачивании a cranked shaft its stop is not supposed at position of any piston in ВМТ. Thus there is a danger of damage of valves and-or the bottoms of pistons. If necessary, turn away a cranked shaft back on a corner 90 °. |
- Screw bolts by hand.
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The camshaft wheel should rotate and not overturn. |
- Turn a camshaft wheel in its oblong apertures against the stop.
- Put on a gear belt a wheel of a camshaft, a tension roller, a wheel of a cranked shaft and in last turn on a wheel of the pump of a cooling liquid.
- Establish the device of a tension of a gear belt.
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Tension of a gear belt
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- Turn the clown tool HAZET 2587-1 counter-clockwise against the stop () so that it was possible to take out lock plate HAZET 2588-2.
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- Turn slowly the tension device clockwise (overcoming resistance) so that between the tension lever and the case it was possible to insert easily a drill (2) diameter of 4.0 mm. The size and = 4.0 ± 1.0 mm.
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- Keeping a tension roller in this position tighten a nut of a tension roller (1) moment 20Нм + 45 °.
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- Tighten bolts (arrows on an illustration) fastenings of a wheel of a camshaft by the moment 25Нм.
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- Take out lock finger HAZET 2588-3 and a stopper of cranked shaft HAZET 2588-1.
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The cranked shaft is authorised to be rotated only in a direction of rotation of the engine. |
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- Turn a cranked shaft on 2 turns further clockwise so that it has again stopped in position ВМТ of the first cylinder.
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- Once again check up the size "and" between the tension lever and the case of the tension device. Demanded value: and = 4.0 ± 1.0 mm.
- If the size "and" is not reached, tighten a tension roller in the image described more low.
- Keeping a tension roller tool HAZET 2587-1, turn away a nut (1). After that on action of effort of the tension device release it so (marksman) to reach the size "and". Demanded value and = 4.0 ± 1.0 mm.
- Keeping a tension roller in this position, tighten a nut (1) moment 20Нм + 45 °.
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Check of phases timing
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- For monitoring procedure fix once again a wheel of a gear belt a stopper of cranked shaft HAZET 2588-1. Thus keep in mind the following:
- Labels on a wheel (2) and a stopper of a cranked shaft (1) should be opposite each other. Thus the pin of a stopper of a cranked shaft (marksman) should enter into an aperture of a sealing flange.
- The pin of a stopper of a cranked shaft at rotation should enter into an aperture on a sealing flange (an arrow on an accompanying illustration).
- If the cranked shaft has passed through label ВМТ of the first cylinder, turn away a shaft on 90 ° back so that it again at rotation in the set direction has stopped in position ВМТ of the first cylinder.
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Updating by shaft rotation back for the purpose of stopper installation is not supposed. |
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- Check up, whether the nave by means of lock lath HAZET 2588-3 is fixed.
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- The interval between pads (1) on a rotor of the gauge of a camshaft should lie against marks «4Z» (2) on a back cover of a gear belt.
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If the nave is not fixed
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- Turn away bolts of fastening (arrow) of a wheel of a camshaft.
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- Put on the central bolt of a camshaft накидной a key and turn a nave so that lock lath HAZET 2588-3 could enter.
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- Tighten in this position bolts of fastening (arrow) of a wheel of a camshaft the moment 25Нм.
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- Clean lock finger HAZET 2588-3 and a stopper of cranked shaft HAZET 2588-1.
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The cranked shaft is authorised to be turned only in a direction of rotation of the engine, i.e. clockwise. |
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- Turn a cranked shaft on 2 turns in a rotation direction, т.е clockwise so that the cranked shaft has again risen in position ВМТ of the first cylinder.
- Repeat the control of phases timing.
- Put the fan with вязкостной муфтой in a casing.
- Establish into place the generator, thus for simplification of installation of the generator of the plug of lock bolts beat out a little back, address to Section Removal and generator installation.
- Fix the fan with вязкостной муфтой a new bolt the moment 45Нм.
- Establish клиновой a belt, address to Section Removal and installation of a belt of a drive of auxiliary units.
- Establish into place the forward panel, address to Section Installation of the forward panel in position for maintenance service.
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