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2-1-4-snyatie-i-ustanovka-vpusknogo-truboprovoda.html
2.1.4. Removal and installation of the inlet pipeline Removal
Let's to the engine cool down completely, then dump pressure in fuel system for engines with system of injection of fuel (see. Head Power supply system).
Disconnect a negative wire of the battery.
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If the radio receiver of your car is equipped with system of protection against theft, make sure that you gathered the correct code before a battery detachment. |
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- Merge an engine cooler (see. Head Routine maintenance of the car) to level below the inlet pipeline. If in a good condition, it it will be possible to use a cooler again.
- On engines with system of injection of fuel weaken a collar of a hose and disconnect a big inlet air hose from the butterfly valve case. It is possible that it is required to remove all assembly of an air purifier / an inlet hose to release more place for work (cm Head the Power supply system).
- On engines of carburetor type completely remove air purifier assembly (see. Head Power supply system).
- Disconnect hoses of system of cooling from the case throttle заслонки / the inlet pipeline that is provided.
- Disconnect a cable of a butterfly valve and if it is provided, a drive cable темпостата (see. Head Power supply system).
- Remove the valve and the line of system of a retsirkulyatsiya of the fulfilled gases where it is provided (see. Head of the Control system of the engine and decrease in toxicity of the fulfilled gases).
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- At this stage on M40 engines it is necessary to remove the top part of the inlet pipeline, having given bolts and nuts. Remove laying.
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- On engines with system of injection of fuel disconnect a vacuum hose from a regulator of pressure of fuel and disconnect electric sockets from fuel nozzles (see. Head Power supply system).
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- Disconnect lines of supply of fuel from the fuel highway or the carburetor that is provided (see. Head Power supply system).
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- On M40 engines отболтите also remove a basic bracket from the lower part of the inlet pipeline.
- Disconnect all remained hoses and wires between assembly of the inlet pipeline/case of a butterfly valve and the engine or the chassis.
- Give bolts and/or nuts of fastening of the pipeline to a head of cylinders by means of a replaceable head, a ratchet and a long collar (M20 engines).
- Begin with the ends move to the middle, releasing each nut in turn gradually, achieving that it was possible to give them a hand. At removal of fixture support the pipeline that it did not fall.
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The pipeline can be removed, without removing the case of a butterfly valve, nozzles, vacuum / thermovalves, a regulator of pressure of fuel or the carburetor. If you establish the new pipeline, transfer all these components (see. Head the Power supply system) on the new pipeline before its installation on a head of cylinders. |
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- Move the pipeline up and down to destroy laying hermetic, then remove it from a head and after that remove laying.
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Installation
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- Remove old laying, then carefully scratch out from interfaced surfaces of the pipeline and a head all traces of a material of old laying. Be very careful not to damage and to scratch soft aluminum surfaces. On sale there are special solvents for removal of laying. Make sure that surfaces absolutely pure and are fat-free.
- Check the pipeline on existence of traces of corrosion (where passes a cooler), cracks, deformations and other damages. Cracks and deformations usually appear near a laying surface, round openings for screws of adjustment of a gap. If similar defects are found, give the pipeline to repair (or replace if necessary).
- At pipeline installation always use new laying. Where one party of laying has a graphite surface, it should be turned to a head of cylinders.
- Get nuts and bolts and tighten them gradually, beginning from the center and moving by the ends, achieving demanded effort.
- The rest of procedure of installation make as it should be, the return to removal. On M40 engines replace laying between the top and bottom parts of the pipeline.
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