2.4. Gear belt
Removal
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Turn a bent shaft clockwise and combine adjusting tags that the piston in the first cylinder was installed in the top dead point in a compression step. At this time adjusting tags of a pulley of the camshaft and a cover of a head of the block of cylinders have to be combined, and the adjusting pin of a pulley of the camshaft has to be above. |
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- Take off poliklinovy a belt and a pulley of a bent shaft.
- Remove a casing of a gear belt.
- Remove an engine support arm.
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- For a head of a big bolt turn the mechanism of a tension of a gear belt before combination of a basic plate with an opening in a casing, then insert a clamp into an opening.
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- Six-sided key weaken the fixing bolt.
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- For a head of a big bolt turn the mechanism of a tension of a gear belt against the stop clockwise.
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- Tighten the fixing bolt.
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- Take off a gear belt.
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Note the direction of rotation of a gear belt for repeated installation it in initial situation. |
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- Turn out a hinged bolt and remove the mechanism of an automatic tension of a gear belt.
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Check
Pulleys, pulley of the mechanism of a tension of a gear belt and single pulley
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- . Check pulleys of distributive and cranked shaft, a pulley of the mechanism of a tension and a single pulley for lack of uneven wear, cracks and damages. Replace them as required.
- Check ease and smoothness of rotation of a pulley of the mechanism of a tension and single pulley, and also lack of extraneous noise at rotation. Replace them as required.
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- Replace pulleys if there is a lubricant leak.
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Mechanism of an automatic tension of a gear belt
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- Check the mechanism of an automatic tension of a gear belt for lack of leaks and, if necessary, replace it.
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- Check a tip for lack of wear or damages and, if necessary, replace it.
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Gear belt
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- Check a gear belt for lack of traces of oil, water or dust. If it is necessary replace a belt. Insignificant traces have to be wiped by dry fabric or paper. You do not clean a gear belt solvent.
- After repair of the engine or adjustment a belt tension, check a condition of a belt. With the following defects, replace a gear belt.
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Installation
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- Establish a pulley of a bent shaft on a bent shaft.
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Pay special attention to the direction of installation of a flange. If the pulley is established incorrectly, it will lead to damage of a gear belt. |
- Establish a special washer and screw a bolt of fastening of a pulley to a bent shaft and then tighten a bolt. Inhaling moment: 185–195 N • m.
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Gear belt
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- Check the provision of adjusting tags.
- from a bent shaft: an adjusting tag on a pulley of a bent shaft and a rod for installation of the moment of injection;
- from the camshaft: an adjusting tag on a pulley of the camshaft and a head of cylinders.
- Install the tension mechanism.
- Install the mechanism of an automatic tension of a gear belt.
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- Tighten a hinged bolt. Inhaling moment: 50-55H • m.
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- Establish a gear belt.
Description
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Defect
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1. Rigid return surface of a gear belt |
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The surface has a glossy appearance. Rigidity of a surface such is that the nail does not leave marks on a belt
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2. Cracks on the return surface of a gear belt |
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3. Cracks or stratification of a gear belt |
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4. Strongly worn-out teeths |
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The side of tooth is worn-out, at the same time fibers, a cord and the rubber basis become visible
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5. Strongly worn-out teeths (last stage) |
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The side of tooth is worn-out, at the same time attritions become visible and tooth thickness is reduced
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6. Cracks in the basis of teeths |
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7. Lack of tooth |
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8. Strong wear of one party of a belt |
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The normal belt has to have an equal side end face as though cut off by a sharp knife
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9. Cracks on lateral face of a gear belt |
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- Weaken the fixing bolt, at the same time the lever of the mechanism of a tension will move and will automatically pull a gear belt.
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- Turn clockwise a bent shaft of the engine on two turns and check combination of adjusting tags.
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- Tighten the fixing bolt.
- Remove a clamp.
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