2.17. Axle and his walk
Characteristics of the device
The iron of the pig of axle, form, the number of the support depends on a drawing of a head of the cylinder block (like the motor). The work surfaces of cames and a neck below an epiploon is whitened for the increase in the use resistance.
For an exception of the axial movement of the axle of his rear party the flange is supplied.
The axle walk (independent of the type of motor) is executed by a belt of gear of the flattered pulley installed in the doubled one to an end. For a tension of a belt the roll of tension in which there are no services of teeths. It revolves in an axle,
established in an arm that it fixes to the cylinder block. Modifying the provision of an arm about pins of his fixation, it is possible to modify a tension of belt.
Substitution of a belt of the walk of the axle
Cars with motors with a volume of work of 1,1 and 1,3 l
The walk of the axle of the motor with a volume of work of 1,1 l is shown in the fig. 2.52, the motor with a volume of work of 1,3 l – in fig. 2.53.
Desmontagem of the walk of the axle
Put out a pin of the fixation of a pulley of the bomb of cooling the liquid.
Put out a pin of the fixation of the creator.
Withdraw a pulley of the bomb of cooling the liquid and a belt of the walk.
Withdraw a pulley of an end of inclination.
Discover the walk of the mechanism that distributes the gas.
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Fig. 2.54. The etiquettes agreement in relaciona to a pulley E the axle and a head of the cylinder block B of the motor with a volume of work of 1,3 l
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Fig. 2.55. The etiquettes agreement in relaciona to a pulley of an end of inclination and the cylinder block of the motor with a volume of work of 1,3 l
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Fig. 2.56. The etiquettes agreement in relaciona to a pulley of the axle and a head of the cylinder block of the motor with a volume of work of 1,1 l
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Fig. 2.57. The etiquettes agreement in relaciona to a pulley of an end of inclination and the cylinder block (the pin) of the motor with a volume of work of 1,1 l
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Install alternatively of an inclination end the piston of the 1st cylinder in the provision of VMT of the end of a step of the compression, at the same time you label in flattered pulleys of the distributive and doubled end they have to go with the etiquettes agreement in the motor (fig. 2.54, 2.55, 2.56, 2.57).
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Fig. 2.58. The weakening of an inhalation of a pin of fixation of a roll of tension and shift of a roll to the bomb of cooling the liquid (the motor with a volume of work of 1,1 l)
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Fig. 2.59. Roll of tension of the walk of the mechanism that distributes the gas of the motor with a volume of work of 1,3 l
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Weaken an inhalation of a pin of the fixation of a roll of tension and move a roll to the bomb of cooling the liquid. Hold tight a pin of the fixation of a roll (fig. 2.58 and 2.59).
Take away a belt of gear of the walk of the mechanism that distributes the gas.
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PREVENTION
The gear belt must not be bent. The belt of gear of inclination must be substituted as it can blow up in the use that will lead to serious damages of the motor.
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If the belt that was in the Repair certainly if it establishes is necessary to consider the direction of his rotation (fig. 2.60). The installation of a belt of the work "in the opposite sense" can lead to his slit and of that to serious damages of the motor.
Withdraw the flattered pulley of the axle.
Put out pins of the fixation of the flattered pulley of an end of inclination.
Fire to a video of tension of a belt of the walk of the mechanism that distributes the gas.
Check of technical condition of a belt of the walk of the mechanism that distributes the gas
Check a belt to lubrication and the pollution for the powder. If necessary a belt substitutes. The powder withdraws the insignificant lubrication or the pollution with dry cloth or paper. Do not apply solvents to the cleaning.
In the moment of a splitting of the motor or the agreement of a tension of a belt carefully they check a condition of a belt. Substitute a new belt with at least one of the defects supplied down.
1. The hardening of an extern surface of a belt (the extern surface of a brilliant belt, not elastic also was hardened to such a point that of holding tight the dent does not remain a nail).
2. In an extern surface of a belt there are slits.
3. In an internal surface of a belt of a slit or interval of teeths.
4. I use strongly of teeths (initial stage). I use the loaded party of teeths (a razlokhmachivaniye of threads of a rope, I use - out of a layer of rubber, texture to colors, indistinct whitish of a rope).
5. I use strongly of teeths (final stage). I use a rope in the loaded party of teeths to an exhibition of a layer of rubber (width reduction of teeths).
6. Slits on basis of teeths.
7. Separation of teeths.
8. The strong use of edges of a belt (the useful belt will of cut exactly is embroidered by you).
9. Slits in belt edges.
Check of technical condition of flattered pulleys and roll of tension
Check flattered pulleys of the distributive and doubled end, a roll of tension of the existence of excessive use, slits or damages. If necessary it substitutes incorrect parts.
Check the tranquillity and the smoothness of the rotation of a roll of tension (fig. 2.61), to be convinced of the lack of a side they play and strange noise.
If necessary a roll substitutes.
Meeting of the walk of the axle
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Fig. 2.62. Installation of a flange and flattered pulley of an end of inclination of the motor with a volume of work of 1,1 l: 1 – inclination end; 2 – flattered pulley of an end of inclination
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Fig. 2.63. Installation of a flange and flattered pulley of an end of inclination of the motor with a volume of work of 1,3 l: 1 – polishes; 2 – inclination end; 3 – flange; 4 – flattered pulley of an end of inclination; 5 – lavador special
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Establish a flange and the flattered pulley of an end of inclination, like shown in the fig. 2.62 and 2.63. Pay the special attention to his mutual situation during the installation.
Moment of an inhalation of a pin of fixation of the flattered pulley of an end of inclination, N · м:
motors with a volume of work of 1,3 l..... 140-150
motors with a volume of work of 1,1 l..... 70-100
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Fig. 2.64. Installation of the flattered pulley of the axle of the motor with a volume of work of 1,3 l: And, in – etiquettes adjust
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Fig. 2.65. Installation of the flattered pulley of an end of inclination of the motor with a volume of work of 1,3 l (in a note – etiquettes they adjust)
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Fig. 2.66. Installation of the flattered pulley of the axle of the motor with a volume of work of 1,1 l
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Fig. 2.67. Installation of the flattered pulley of an end of inclination of the motor with a volume of work of 1,1 l
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Install the flattered pulley of the axle (fig. 2.64, 2.65, 2.66, 2.67) and they hold tight a fixation fire on the specified moment.
The moment of an inhalation of a pin of the fixation of the flattered pulley of the axle of motors with a volume of work of 1,3 and 1,1 l passes 80-100 N · m.
In the position of the piston of the 1st cylinder in VMT of the end of a step of the compression is convinced of the etiquettes combination in flattered pulleys of the end distributive and doubled with the agreement of etiquettes in the motor.
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TO OBSERVE
During the installation of the flattered pulley of a trace of end of inclination that the pin of the flattered pulley entered in a small opening of a flange of an end.
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Take a roll of tension of a belt of the walk of the mechanism that distributes the gas as it is possible more near to the bomb of cooling the liquid and hold tight a pin of his fixation.
Bring the spring end of a roll of tension to an opening of an arm of a roll and through the screwdriver they acquire another spring end of an advanced covering of the cylinder block (fig. 2.68 and 2.69).
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TO OBSERVE
Establish a belt of gear so that his main branch was weakened a little.
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PREVENTION
Putting a belt of gear to provision of the distributive end, doubled or intermediary must not be modified. Otherwise there can be serious damages of the motor or it will stop giving the very power. After a tension of a belt of gear they re-examine the provision of the distributive, intermediary end and a pulley of belt: if the etiquette in making a list to a pulley of the axle coincides with an etiquette in a head of the cylinder block, then at the same time they will coincide an etiquette in a pulley of an end of inclination and an etiquette in the cylinder block. Otherwise it is necessary to repeat the installation of the flattered pulley of the axle and a pulley of an end of inclination in the tuck - of the gear belt.
Densely put a few pulleys of belt of gear in the next order:
– pulley of an end of inclination;
– axle pulley;
– tension roll.
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After this creates a tension of the main branch of a belt, having turned the flattered pulley of the axle in the direction, the return to the normal direction of the rotation; check the combination of adjusting etiquettes.
Launch a spring of a roll of tension, having weakened an inhalation of a pin of his fixation.
Turn the axle in the normal direction of the rotation (in the direction of the movement of the pointers of the clock it if are looked of an advanced face of end of the motor) in two teeth of the flattered pulley (in 15 °).
Do the additional effort of a roll of tension in the normal direction of the rotation (in order that the pulleys teeths supplies a dense prileganiye of teeths of a belt without slit).
Having convinced of the belt prileganiye the density, there insists a pin of the fixation of a roll of tension on this situation so that to his spring it had an opportunity for moving.
Turn the flattered pulley of an end of inclination in two four you return in reverse sense to the movement of the pointers of the clock to secure the dense landing of a belt to pulleys.
Check a tension of a belt of gear. With this finality a tension roll undertakes a hand and with the moderate effort (approximately 5 N) it holds tight a branch of tension of a belt (fig. 2.70). At the same time the teeths of a belt will get it approximately way of the ray of a head of a pin of the fixation of the device of tension (in front sides) (motors with a volume of work of 1,3 l).
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Fig. 2.71. Scheme of check of a tension of a belt of gear of the motor with a volume of work of 1,1 l
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There is secured what holding tight an average part of the main branch of a big belt and rate touches the distance between a reverse side of a belt and the center of an opening below a pin of the fixation of a covering of the walk of the mechanism that distributes the gas in the cylinder block does approximately 20 mm (motors with a volume of work of 1,1 l) (fig. 2.71). The check of a tension of a belt sees in the fig. 2.72.
Establish a covering of the walk of the mechanism that distributes the gas.
Establish a pulley of an end of inclination.
Establish a belt of the walk of the compressor of the condicionador and adjust a tension of belt.
Establish a pulley of the bomb of cooling the liquid.
Establish poliklinovy a belt of the walk of auxiliary unities and adjust his tension.
Cars with motors with a volume of work of 1,5 and 1,6 l
Desmontagem of the walk of the axle
Having put out a pin of the fixation of an arm to the cylinder block of the motor and three nuts of the fixation of an arm, withdraw an arm of an amount of motor (fig. 2.75).
Put out a pin of the fixation of a pulley of the bomb of cooling the liquid.
Put out a fixation of pin of the creator.
Withdraw a pulley of the bomb of cooling the liquid and a belt of the walk.
Withdraw a pulley of an end of inclination.
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Fig. 2.77. The shift of a roll of tension of a belt of the walk of the mechanism that distributes the gas to the bomb of cooling the liquid
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Move a roll of tension of a belt of the walk of the mechanism that distributes the gas in the direction to the bomb of cooling the liquid and temporarily register it in this situation (fig. 2.77).
Take away a belt of the walk of the mechanism that distributes the gas.
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PREVENTION
If the belt that was in the Repair certainly if it establishes is necessary to consider the direction of his rotation. The installation of a belt of the work "in the opposite sense" can lead to his slit and of that to serious damages of the motor.
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TO OBSERVE
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Take away a belt of the flattered pulley of the axle.
Withdraw the flattered pulley of the axle.
Put out pins of the fixation of the flattered pulley of an end of inclination. Withdraw the flattered pulley of an end of inclination and a flange.
Fire to a video of tension of a belt of the walk of the mechanism that distributes the gas (fig. 2.79).
Check of technical condition of a belt of the walk of the mechanism that distributes the gas
Check a belt to lubrication and the pollution for the powder. If necessary a belt substitutes. The powder withdraws the insignificant lubrication or the pollution with dry cloth or paper. Do not apply solvents to the cleaning.
In the moment of repair of the motor or agreement of a tension of a belt carefully they check a condition of a belt. Substitute a new belt with at least one of the defects supplied down.
1. The hardening of an extern surface of a belt (the extern surface of a brilliant belt, not elastic also was hardened to such a point that of holding tight the dent does not remain a nail).
2. Slits in an extern surface of a belt.
3. In an internal surface of a belt of a slit or interval of teeths.
4. I use strongly of teeths (initial stage). I use the loaded party of teeths (a razlokhmachivaniye of threads of a rope, I use - out of a layer of rubber, texture to colors, indistinct whitish of a rope).
5. I use strongly of teeths (a final stage) Use a rope in the loaded party of teeths to an exhibition of a layer of rubber (width reduction of teeths).
6. Slits on basis of teeths.
7. Separation of teeths.
8. The strong use of edges of a belt (the useful belt will of cut exactly is embroidered by you).
9. Slits in belt edges.
Check of technical condition of flattered pulleys, tension and rolls of secondary passage
Check flattered pulleys of distributive and doubled end, tension and go round rolls of the existence of excessive use, slits or damages.
If necessary it substitutes incorrect parts.
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Fig. 2.80. Check of tranquillity and smoothness of rotation of tension and rolls of secondary passage
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Check the tranquillity and the smoothness of the rotation of the tension and go round rolls (fig. 2.80), to be convinced of the lack of a side they play and strange noise.
If necessary it substitutes rolls.
Substitute rolls in the presence of aspects of the hole of the lubricant of loads.
Meeting of the walk of the axle
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Fig. 2.81. Installation of a flange and flattered pulley of an end of inclination: 1 – polishes; 2 – inclination end; 3 – flange; 4 – flattered pulley of an end of inclination; 5 – lavador special
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Establish a flange and the flattered pulley of an end of inclination, like shown in the fig. 2.81. During the installation they pay the special attention to his mutual situation.
Install the flattered pulley of the axle and hold tight a pin of his fixation of the moment of 80-100 N · m.
Establish that they go round a roll and hold tight a pin of his fixation of the moment of 43-55 N · m.
Combine an etiquette E in relacionam to an axle pulley with an etiquette in in a covering of the load of an end (fig. 2.82).
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Fig. 2.83. The installation of the flattered pulley of an end of inclination (in a note that adjusts etiquettes they are shown)
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After this installs the piston of the 1st cylinder in VMT of the end of a step of the compression and an etiquette goes in relacionam to a pulley of an end of inclination with an etiquette in an advanced covering of the cylinder block, like shown in the fig. 2.83.
Establish a roll of tension, springs (fig. 2.84) and the remote capture, temporarily hold tight pins of fixation. Then a pin insists with a lavador on an oval opening of an arm of a roll of tension.
Acquire the lowest spring end of an advanced covering of the cylinder block, like shown in the fig. 2.85.
Register a roll of tension in this situation (moved to the bomb of cooling the liquid).
Establish a belt of gear in a pulley of an end of inclination.
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Fig. 2.86. Installation of a belt of gear: 1 – flattered pulley of an end of inclination; 2 – go round the roll; 3 – flattered pulley of the axle; 4 – tension roll
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Establish a belt of gear in an axle pulley. After the installation of a belt in a pulley of the axle is convinced of a tension of the main branch of a belt. Then, becoming a pulley of axle in the opposite sense, be convinced that the esticamentos of branch of tension and all the etiquettes of agreement combine.
Hold tight pins of the fixation of the device of tension.
Become an end of inclination in two business volumes of the direction of the rotation (in the direction of the movement of the pointers of the clock) so that it installs the piston of the 1st cylinder in VMT of the end of a step of the compression, at the same time you label in relacionam to a pulley and a covering of loads of the axle they have to combine.
Moment of an inhalation of a pin of fixation of a roll of tension of 20-27 N · m.
Check a tension of a belt (fig. 2.87). With this finality, when a tension roll undertook a hand with the moderate effort (approximately 50 N), hold tight the main branch of a belt. Teeths of a belt will get it approximately way of the ray of a head of a pin of the fixation of a roll of tension (in front sides).
Establish a covering of the walk of the mechanism that distributes the gas.
Moment of an inhalation of pins of fixation of a covering of the walk of the mechanism that distributes the gas of 8-10 N · m.
Establish a pulley of an end of inclination, looking that the pin of the flattered pulley of an end of inclination entered in an opening of a pulley of an end of inclination.
Moment of an inhalation of a pin of fixation of a pulley of an end of inclination of 140-150 N · m.
Establish a belt of the walk of the supporter of the system of cooling and adjust a tension of belt.
Establish a pulley of the bomb of cooling the liquid.
Establish poliklinovy a belt of the walk of auxiliary unities (fig. 2.88) and they adjust his tension.
Check of technical condition
Axle
The surfaces of basic necks of the axle and cames also they have to be polished well without damages. If in the necks surfaces there will be aspects of the interference or deeply risk, the end must be substituted.
Install the axle for extreme necks in two prisms put in a plate of proof and measure indicative of type of hour a radial thrashing of basic necks. The radial thrashing must not exceed 0,02 mm.
The cases of loads of the axle must no have slits. In the basic loads surfaces below necks of the axle it bothers and the scratches are not allowed.
Check a slit between necks of the axle and openings of the support. The slit decides for the calculation after a measurement of necks and openings in the support in a head of the cylinder block in the installed cases of loads.
For the definition of a slit it is possible to use the special tipsy plastic wire. With this finality carry out the next thing:
– carefully clear necks of the axle and basic surfaces of a head of the cylinder block and cases of loads;
– withdraw empurradores of valves;
– put the axle in support to a head of the cylinder block and put parts of a plastic wire in end necks;
– install cases of loads and hold tight nuts of his fixation in two steps the moment of 20 N · m;
– withdraw cases of loads and depending on the size of the flattering of a wire in the arranged scale packing of a wire, define a slit.
Dispatch epiploon of the axle
Check edges of work of an epiploon of the existence of use. In the use of edges of work they substitute an epiploon.
Check the surface of the inter-connected axle to edges of work of an epiploon. In the presence in this surface of steps of the use they substitute the axle.
Gear belt
The surface of a part of gear of a belt will have a right profile of teeths. In teeths there must not be a use, the pleats, the slits, parliament for bass and the peelings of fibers of cloth of the rubber.
In any surface of a belt there must not be aspects of the blow of oil of motor.
In surfaces of face of a belt there must not be a stratification or a razlokhmachivaniye; the insignificant vystupaniye of bangs of a base of cloth of a belt is allowed, anyway.
The surface of an extern flat part of a belt will be the same, without curvatures, pleats, slits and deepenings.
Useful data and advices
Belt of gear of the walk of the mechanism of distribution of gas
Today the gear belts found "the second wind". Practically all the manufacturers of the cars equip the cars of the elastic walk. The German designers were more in the distance. Widely they apply a double belt of gear (Duplex) as the connection fiável of the axle with the mechanism krivoshipno-conrod.
The gear belt has a number of advantages before a chain of driving. The last thing is obvious more dispendiosamente. It is much more simple to do a belt, of which a chain. In the extract the gear belt is the shut strip of the rubber maslobenzostoyky reinforced by a rope kapron with teeths, privulkanizirovanny for him. If a belt is compared with a chain, then the comparison will appear not on behalf of the last one. The belt is much more light than a chain that, naturally, cannot affect them to me the mass of the motor. Besides, the motor supplied with a belt, the colleague more calmly equips himself much of a chain. Also "the elastic belt" out of a motor covering mounts what affects the time of his installation or substitution. For example, in substitution of a belt of the walk of the mechanism that distributes the gas of the motor of eight valves of four cylinders with the subsequent one his installation in etiquettes approximately 25-30 license of a minute. With a such chain focus will not pass.
In the correct service the gear belt goes much time. The domestic manufacturers, we will remember, give a guarantee of a 60 thousand km race, foreigners – and that it is more. The maçaroqueira managed to postpone the time of the substitution of a belt of 160 thousand km of a race.
What is the correct service of the transmission by strap composed in? At least each one has 15-30 thousand km of a belt tension happens. Nevertheless it does not mean that only it is necessary not to bend a covering and to check, if at the place a belt. He is the best of all to examine it, having withdrawn of the motor. Sometimes noticing is difficult that one of teeths is cut. If it took place already, then it will be sure what much time will not stretch out. Therefore, having taken away a belt, do in him a chalk of mark, and the new tooth behind the tooth examines it. After the installation also it is necessary to check the provision of rolls of tension and the direction. All these elements will be in an airplane, otherwise the belt will work with a twist that considerably will reduce his resource.
Important factor of work of a belt – absence in his oil surface. Independently of what went to rubber maslobenzostoyky of from which the belt is done, however there is not what the case when "oil does not spoil the porridge of cereal". Here oil only to the detriment. Therefore, it is periodicamente necessarily to pay attention to a condition of epiploons of the distributive and doubled end. And if an oil hole was noticed, try he removes somewhat quicker. Like the practical display, his resource is of a belt in oil reductions for the half, and up to three times.
If it ignores this control, then the consequences will not make wait for much time. For 40-50 thousand km at the expense of a belt that gosh his tension one is going to weaken and it will begin "whipping". As a consequence of him the "heavy" axle revolves not synchronously with an inclination end, and with the delay. This work "assíncrono" leads to a weakening bigger of a tension of a belt. Since that there is excessive load of teeths.
The interval of several teeths successively can take to the fact that as soon as the axle will remain property while the end of great inclination. In this moment the open cylinders valves will "find" pistons. Result – break of a nucleus or a curve of the valve, the broken captures of direction, break of the axle. It has, nevertheless, also exceptions when the interval is painless practically. Nevertheless it is possible only in those cars in which the motors specially of such case pro-points in pistons happen. Our VAZs, knowing the cars VAZ-2105 with the driving 1300 of cm3 and VAZ-2108 with the motor cm3 1500, for example, they concern us.
In most of the cases the interval of a belt costs to an owner of the car in the round sum joined with the revision of the motor. For example, the price of belt of the motor of the car BMW does US$ 40, the repair of the motor will cost US$ 2.500. The belt of VAZ "nine" can be bought by US$ 25. And here the repair of the motor will pull for US$ 400.
Valves
It is possible to revive any "tired" car. For more technical difficulties than at the same time are big. Here not to do without spare pieces, machines, the equipment of welding and another technological support. The main thing – manufacturing manuals of repair (and they are available now) do not say anything of possible alternative decisions, specially of a select problem between details, materials and instruments that are in the home market. Such is a questions circle of which both the enthusiast of lonely person and the mechanics of the small motor workshop of repairs needs for the information.
Sooner or later any motor becomes a fountain of preoccupations: go deaf in the way, do not want to be left in the mornings, worse tugs, he "eats" the excessive fuel and the oil. It is quite probable that the reason of his capricious behavior is clear: it is enough to clean the carburator or the mouths of the system of the injection, to adjust the ignition and substitute hats of scraper of oil that everything introduced standard. But happen that the traditional approximations do not help the maintenance of the motor, and in the moment of measurements of a compression it is clear that in one or several cylinders it is lower than admissible.
Then first of all specify the nature of the bad functioning: I use group tsilindroporshnevy, a podgoraniye of plates or use of nucleuses and the captures of direction of valves. The technology of diagnosing is quite simple and described in many subsidies in the motors repair.
After this decides on the repair. Here only it is necessary to be taken for the rule of being
far from any miracle liquid. The effect in beginning is possible, but it is got rarely; usual result – excessive expenses and efforts. It is better to be guided by the proceeding of grown repair at the same time.
To think a workshop where the motors negotiate, today already it is simple, and not only in the great cities. But here is it like the work and what his quality gets organized there? The life shows that in all the importance of the experience and the employees' qualification the good results of the work without the special equipment and equipment are unattainable, and in this plan the dispersal of the technical armaments of our stations of service and mechanics, oh, is high. And if I dictate above the open to question one generally the driver's operator, then besides that one directs not so much to him how many to a mechanic, it will be a question of the technology.
In cases when the results of the diagnostic one indicate the bad functioning of the mechanism of the distribution of gas, the head of the cylinder block must be withdrawn. The first one that has to become after removal, desmontagem and the general inquiry, – to appreciate slits between nucleuses of valves and the captures of direction. If you link it is more biggest permissible, then the valves substitute with the new. But when this vague measure is insufficient, it is necessary also to substitute captures.
For a such small workshop work presents already known difficulties: the iron of the pig covers the press in case of aluminum with a tension. At the same time to avoid microslits and a smyatiya, the captures must be cooled previously in the liquid nitrogen (what the temperature 196 °C), and to heat a head of the block to 160-170 °C (when the highest temperature is heating up there can be dangerous consequences). All that is quite difficult, it consumes the work and very often simply it is impracticable in conditions of manual semiskill. Therefore, in rare workshops they do not avoid the conditions ordered by the manual of repair that straightly is developed in the loss of the quality of landing and twist of the geometry of the connection. Then correct, prosecuting "at the place" saddles of valves and valves much time and enfadonhamente grind in.
But today also there is another technique, extremely profitable both in the entry of work, and in the investment of the capital that at the same time it guarantees resulted from high quality. It is based on the use of the original and almost unknown instrument of the American company Neway in our practice.
With his restoration of help of guides used captures it is executed at the place without vypressovka. The rolls of special knives cause the plastic deformation from metal, compensating for the use of an internal surface of the capture, at the same time forming in him a fillet in spiral that improves lubricating conditions of nucleus of valve, and also it serves of the work of facilitation of consolidation of special labyrinth the hats of scraper of oil.
Five knives and the group of development to end prosecuting of the capture are included in the packet. It is characteristic that all the Repairs with the instrument of Neway are driven manually and are not joined with the power provision or receiving from abroad of another type of the energy.
Now on valves saddles. In traditional methods of his processing that directs a sharoshka or a freely great vertical furadeira in the valve capture. The mills of Neway have a motionless axle that concentrates already densely on the capture restored by the wide clip of collet autoestablished. The mill puts itself in an axle with a slit of precision of 0,5 mícrones what supplies the least admission of the processing. The mills of Neway due to the only sharpening and the form of the form of edges that cuts in a valve saddle smooth a special microrelief as "comb": the extra profit of the valve and a saddle passes quickly and effectively, and the necessity of grinding in desaparece. His productivity is high: any facet in a saddle of the valve turns for 3-4 turns of the instrument.
The last stage – restoration of facets of work of valves. For this Repair Neway it offers the instrument Tizmatik-2 specially. The valve does not concentrate móvelmente on the special adaptation that is installed, to his time, in usual lathes of row of seats of table. There are enough several turns of a mill (the axial offer is provided of the microelevator) to receive the ideal concentric surface of the valve. We are going to notice what in his work surface, as well as prosecuting a saddle, the special microrelief also forms.
Here, in fact, and all. It is only necessary if to wash out and to polish all the details then is possible to join a head.
And grinding in? We are going to remember again: during the work as the instrument of Neway in this tiresome, long and tiresome Repair there it is not any necessity. After prosecuting of the couple "the interface" of saddle of valve of both details it gives with the very narrow consolation, practically in the line.
There is got boy (1 °) for a divergence of angles of the processing of surfaces of work of a saddle and the valve (between them to so called corner interferential it is formed). In the first seconds of the Repair of the motor the area of increases of interface for the count a smyatiya of superficial edges of the microrelief created in facets, and soon there is a necessary consolidation of 100 %.
At the expense of the play of the equipment approximately US$ 400 (depending on a complete set) Neway can be worthwhile in the first month of the work, and in the moment of the repair of motors of foreign cars – besides that in order that the perceptible profit makes entering.