5-6-8-zamena-remnya-privoda-tnvd.html
5.6.8. Replacement of a belt of a drive of TNVD
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Fig. 3.38. Adjusting labels on a pulley of a cranked shaft: 1 — a label of installation of the piston of the 1st cylinder in VMT for a belt of a drive of the mechanism of a gazoraspredeleniye and a belt of a drive of TNVD; 2 — a label of yellow color of installation of an initial corner of an advancing of injection of TNVD fuel
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Disconnect a wire from the "minus" plug of the storage battery. Turn a cranked shaft and combine cut 1 (fig. 3.38) of a pulley with a label on the block of cylinders (the piston in the 1st cylinder is in VMT of a step of compression). Remove an air line connecting the case of the air filter and the inlet pipeline. On the CD20E engine disconnect a vacuum hose and an oil pipeline suitable to the vacuum pump, and remove the vacuum pump, accepting precautionary measures for the prevention of pro-lithium of oil. Remove details of fastening of a branch pipe of cooling liquid under the TNVD case and take aside a branch pipe.
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Fig. 3.39. Weakening of a tension roller of a belt of a drive of TNVD
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Uncover the TNVD driving belt, laying and, having weakened a nut of a tension roller, wring out it, turning clockwise (fig. 3.39). Wrap a nut of a roller and remove a belt.
It is recommended to replace a tension roller at replacement of a driving belt. The roller should rotate on an axis without jammings.
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Fig. 3.40. Installation of a belt of a drive of TNVD on the CD20 engine
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Fig. 3.41. Installation of a belt of a drive of TNVD on the CD20E engine
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At installation of a driving belt consider the direction of its rotation specified on a belt by shooters. Be convinced that pulley cut (without color marking) a cranked shaft is opposite to a label on the block of cylinders; the label on a gear pulley of a camshaft (from a flywheel) is in situation «1 hour» for the CD20 engine (fig. 3.40) or «12 hours» for the CD20E engine (fig. 3.41); the label on gear to a pulley of TNVD is in situation «1 hour».
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Fig. 3.34. Installation of a gear pulley of a drive of TNVD: 1 — an adjusting label; 2 — shponochny grooves: "And" for the CD20 and "B" engine for the CD20E engine
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If TNVD or its pulley acted in film, consider that on CD20 and CD20E engines different shponochny grooves (see fig. 3.34) are used. Examine gear pulleys, a roller and be convinced of absence of damages on their surface.
Establish a belt on pulleys, having a label on a belt opposite to labels on camshaft and TNVD pulleys, thus the arrow direction on a belt should be turned towards the engine.
Adjust a tension of a branch of a driving belt between gear pulleys. The effort enclosed to a dynamometer at check of a tension of a belt, makes for the engine of CD20 10 — 20 kgfs, for the CD20E engine — 5 — 15 kgfs.
On the CD20E engine establish into place the vacuum pump. Unscrew a nut of a tension roller and release its spring. Turn on two turns a cranked shaft clockwise and return to a point of adjustment of an initial corner of an advancing of injection of fuel for check of correctness of TNVD installation. Do not turn a cranked shaft of the engine, using for this purpose a camshaft pulley. Execute the remained operations as it should be, the return to removal.
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