drivebelts of your car: The basic requirements /Part 2/.

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drivebelts of your car:
The basic requirements /Part 2/.


Belts of a drive of auxiliary units.

As it is specified above, happen V-belts and Poly-V-belts (they flat, they stream). Let's try compare their advantages and lacks.

V- belts though are considered as archaism, have some conclusive advantages. They are much cheaper flat, easily vary and actuate, as a rule one auxiliary unit. That is, at breakage, say, drivebelt of the compressor of the conditioner, other auxiliary units will continue to work. Besides V- belts stretch simple displacement of pulleys from each other so, application of tension and directing rollers do not demand. In an emergency situation V- belt it is possible to try to replace a belt any improvised means, for example, a piece of a cord or an old stocking. V- belts it is possible to carry a low resource and necessity to lacks to regulate their tension in process of their deterioration.

Poly-V-belts are considered as more modern and on the majority of cars of last years of release they are applied. Poly-V-belts it is possible to carry greater service life to advantages, than at V- belts, automatic adjustment of their tension by means of roller belt tension and ability to transmit much greater effort, than V- belts that enables to actuate all auxiliary units by means of one Poly-V-belt, as, for example, in engine AAA (VR6) from Volkswagen. However, in my opinion, all advantages Poly-V-belts turn around also their lacks. Poly-V-belts in times are more expensive V- belts, at their replacement it is necessary to change one or several tension and directing rollers, and sometimes and belt tension with a roller in gathering. Breakage Poly-V-belt actuating all auxiliary units leads to impossibility to continue movement because to go with idle simultaneously the generator, the pump of the hydraulic booster and a pomp of system of cooling of the engine do not impossibil. However, to motor-car manufacturers is more visible, and V- belts depart in the past, superseded Poly-V-belts. By the way, I shall notice, that interests of motor-car manufacturers and automobile owners at all always coincide, therefore not the fact, that flat belts really so it is better V- belts, how much they are more expensive.

Though so strict demands as to belts GDM, their duly replacement assists to avoid set of fine troubles as that also are not made to belts of a drive of auxiliary units: drivings without the hydraulic booster of a rudder, driving without the generator on the accumulator, drivings in a heat without the conditioner and, at last, standings on a roadside pending while will be cooled down "begun to boil" as a result of breakage drivebelt of a water pomp with the engine. Therefore to change belts of a drive of auxiliary units it is necessary, as well as belts GDM, according to instructions of a manufacturer. Together with Poly-V-belts tension and directing rollers without fail are a subject to replacement. To avoid unpleasant surprises use only original drivebelt and rollers.


The information was given by beltdrive.50webs.com
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drivebelts of your car: The basic requirements

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drivebelts of your car:
The basic requirements
In modern cars some kinds drivebelts are applied.
Here we shall consider only major of them, not touching such exotic, as for example, variator belts.
To destination they can be undressed into 2 groups:
- Belts of a drive of gas-distribution mechanism (belts GDM)
- Belts of a drive of auxiliary units.

On a design on 3 kinds: gas-distribution mechanism
- Gear belts. Are applied, as a rule, to a drive of mechanism GDM
- Flat Poly-V- belts. Are applied to a drive of auxiliary units
- V-belts. Are applied to a drive of auxiliary units.

Part 1. Belts of a drive of the gas-distribution mechanism

To belts GDM the highest requirements by way of reliability and longevity because breakage of belt GDM conducts to very serious to consequences in the form of fault valves, heads of the block of cylinders and, sometimes, pistons are applied. Differently, breakage of a belt, cost up to 50 dollars leads to repair in cost not less than 1500 dollars. Conversations that, say, there are engines in which design the opportunity of breakage of belt GDM is specially stipulated and on such engines breakage of any catastrophic consequences does not carry all, are no more, than the bosh which has been thought up for self-complacency by those to whom it is banal it is a pity money for servicing of the car.

Therefore:
Use only original belts GDM. In this case no economy can cover consequences of breakage of poor-quality, defective or counterfeit belt GDM.

Change belt GDM strictly according to recommendations of the manufacturer. It is written " to change time in 80 000 km ", means we change time in 80 000 km. Any reasonings of irresponsible "masters" a theme that " it "looks as new and still resembles " in calculation to accept does not follow. Anybody from these "masters" subsequently will not make to you repair at own expense.

Always change all tension and directing rollers of belt GDM. Besides, any assurances that " this roller 100 000 more will pass" in calculation to accept does not follow for the reasons specified above. Keep in mind, that, for example, BMW in the recommendations specifies, that in case of removal of belt GDM for any reason, it is a subject to replacement, without dependence from when it changed before.

Do not rely on the memory. Write down run of the car at the moment of replacement of belt GDM. For this purpose there are the special tablets-labels pasted on a visible place in a motor compartment of the car.

Replacement of belt GDM is better to make at the authorized dealers. I am far from an idea, that the authorized dealer is the best variant among car-care centers, but for the works they even give a guarantee and, in case of problems with belt GDM, you can take advantage of this guarantee.

If you managed the second-hand car with unknown history at once change not only oil, but also belt GDM (if it, certainly, on the given engine is). Selling the second-hand car people are not inclined to invest in preselling preparation.


The information was given by beltdrive.50webs.com
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Problems connected with a belt of drive gas distribution

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Problems with start-up of the engine, connected with a belt of drive gas distribution


Frequently, one of the reasons of the complicated start-up of the engine is sharp increase of the effort demanded for cranking of a cranked shaft. This problem can be caused by malfunction of many units. We shall pay attention on possible of a problem with a belt of a drive of the gas-distributive mechanism.

Check of the effort necessary for cranking of the engine
Sharp increase of effort cranking the engine can be caused by destruction and jamming of any bearing or the unit (the compressor of the conditioner, the hydraulic booster, the air compressor). From bearings bearings of bypass and tension rollers of a gear belt gas distribution, bearings of the water pump, the bearing of a tension roller of the compressor of the conditioner more often collapse. Destruction of bearings is promoted by an excessive tension of belts and absence of greasing in them. Any petrol engine can be turned on the sly if to pull two hands for drivebelts (a pomp, the generator, etc.).

Check of a belt gas distribution
It, perhaps, the most simple work. Take off a cover ignition distributor and turn a key of ignition in position "start". Naturally, central wire going from the coil of ignition, it is necessary to earth. If it is not present, as, for example, at engines 1S, 3A, etc. where the coil of ignition and ignition distributor are in one case it is necessary to separate any socket of the plait going in ignition distributor. If at cranking the engine "breaker" does not rotate, most likely, it is required to replace a gear belt, but before try to turn fingers "breaker".
If it will be possible, the belt can be and the whole, and the reason that cut off a pin in a drive ignition distributor (one such case on engine SA-18) as a result, for example, destructions of the automatic device of a centrifugal advancing of ignition is noted. It is generally better, if you connect a stroboscope and at rotation of the engine evidently will observe on labels on a flywheel the moment of submission of a spark. In this case at you will be hundred percent of confidence of correctness of installation of a belt gas distribution.



The information was given by beltdrive.50webs.com
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Revealing and elimination of the reasons of the increased noise of the engine

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Revealing and elimination of the reasons of the increased noise of the engine

All engines should rustle. But at the same time any of shades of noise should not be allocated. More often noise is published with bearings and belts. Happens, that the pump of the hydraulic booster in a rudder, and in overwhelming majority of cases of rustles that in it there is not enough oil.To determine the reason of noise, it is necessary to remove and compare on one belt noise and .

First to remove belts of the hydraulic booster - to start and listen, then - a belt of the pump of the conditioner (it is not out of place for removing in general, not to tropics at us) and again to listen, and the order of removal of belts can be any, convenient for you. However, it is possible to taste from syringe serially to water all belts and if in noise that belt on which working surface water noise will disappear gets is guilty or will change. If all belts are removed, and the engine still rustles (with the removed belt of water cooling the engine of 1-2 minutes can work without consequences), that, means, bearings in rollers on which a gear belt gas distribution rustle. If it (bearings) to change greasing, noise, most likely, will stop. But happens, that greasing any more does not help, it is necessary to change the bearing.

From practice follows, that with the first bearings of the water pump, the generator, a bypass roller, a tension roller start to rustle. Then already others. But, certainly, this all depends on that, belts are how much strongly tense. The the belt is more strongly tense, the will more strongly rustle (and then the bearing something will collapse), that is resulted in rotation by this belt. When belts are removed, it is possible to twist fingers any roller (or a shaft if it is a question, for example, about the generator). Making it, closely listen. If at rotation you feel a rhythmical roar of rollers which are rolled inside of the bearing this bearing should change greasing immediately. If at rotation you will feel even one jamming or a roar of balls spasmodic - it is necessary to change the bearing because at it (it is visible on paths on which balls slide) the surface has already started to be painted and from it anywhere will not get to.

If at the bearing is any feel backlash (shake the platen which in it press on or an external holder concerning internal) also search new. In the old bearing it is possible to put in pawn new greasing and to do a bit of travelling it is a little, but only in the event that it costs somewhere in the generator or in the pump of the conditioner. If it is installed, for example, in a tension roller of a gear belt gas distribution on the diesel engine do not risk, estimate, in what to you repair when the bearing with backlash will collapse will manage or will jam.

Often happens, that start drivebelts (for example, the generator).
Do not rush to pull this belt at once. Perhaps, it that chock any the bearing or this belt has simply grown old: rubber on it tanned, here it and slip. To tighten a belt it is possible, but loading on the bearing (generator) that will not add to it longevity at once will increase.




The information was given by beltdrive.50webs.com
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Adjustment of a tension teaze a belt

Adjustment of a tension teaze a belt of a drive of the generator

Tension of a belt of the generator of engine OHV


1 - a pulley of a cranked shaft;

2 - a pulley of the water pump;

3 - a pulley of the generator

Tension of a belt of the generator of engine CVH



1 - a pulley of a cranked shaft;

2 - a pulley of the generator

Tension of a belt of the generator of the diesel engine


1 - a pulley of a cranked shaft;

2 - a pulley of the water pump;

3 - a pulley of the generator
The tension teaze a belt is measured by means of the special measuring device on the cold engine.

The belt is considered was in the use if it has worked at least 10 minutes.

Check
THE ORDER OF PERFORMANCE
At absence of the measuring device check of a tension of a belt can be made pressing of the big finger of a hand the longest branch of a belt. To a correct tension there meets a deflection of a belt about 10 mm. teaze the belt with shabby edges, anguishes, cracks and traces scorch is a subject to replacement.

Adjustment
THE ORDER OF PERFORMANCE
1. To let off two bolts of fastening of the generator to the engine.
2. To let off a tension bolt and to move the generator to the engine, if a tension of a belt more demanded, or from the engine if the tension is not enough.
3. To delay a tension bolt and, then, bolts of fastening of the generator to the engine.


Tension of a new belt:
- Engine OHV 400 ± 150 Н
- Engine CVH 300 ± 150 Н
Tension of the belt was in the use:
- Engine OHV 450 ± 150 Н
- Engine CVH 350 ± 150 Н



The information was given by beltdrive.50webs.com
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