Mitsubishi Galant

1. Careful clearing of a head of cylinders and components клапанного the mechanism with the subsequent detailed check of their condition will help to define approximate volume of forthcoming regenerative works.

Strong overheats of the engine can lead to deformation of a head of cylinders and infringement of planeness of its interfaced surfaces.

2. Scratch out from interfaced planes of a head of cylinders, the inlet pipeline and a final collector all traces of a material of an old lining and hermetic, - try not to damage a surface. Will essentially facilitate work application special размягчителя to which should impregnate preliminary stuck adjournment, - ask in shops of automobile accessories.
3. Remove from walls of water channels all traces of a scum.
4. A rigid wire brush carefully clean all accessible cavities and apertures. At strong pollution of channels it is necessary to charge head procleaning to experts.
5. "Banish" a tap approaching on the size each of болтовых apertures, having removed from a carving corrosion products, traces of old hermetic and having restored the damaged coils. In the presence of access to a source of compressed air, blow apertures, having removed from them a shaving and small dust.

At use of compressed air do not forget to put on goggles!

6. A wire brush smooth out a carving of hairpins of fastening of the inlet pipeline and a final collector.
7. Wash out a head solvent and carefully dry it. Use of compressed air will allow to reduce essentially term of drying and will give the quality assurance of procleaning of badly accessible cavities and apertures.

Various sort for removal of traces of the deposit, procedures of cleaning essentially facilitating performance, it is possible to get structures in many shops of automobile accessories. Remember that such means usually are chemically aggressive and should be applied with observance of corresponding safety measures, - strictly adhere to instructions of the manufacturers usually resulted on a label of container.

8. Wash out solvent pushers of valves, then carefully dry them. Use of compressed air will essentially facilitate procedure performance (do not forget to put on goggles).

The pushers equipped with hydroproof-readers should be put upside down in an oil bath. Remember that at assemblage all components should be established strictly on the former places.

9. Wash out in solvent and carefully dry клапанные springs, their plates, a saddle and crackers of cutting locks, - try not to mix components.
10. Scratch out a great bulk of the valves of adjournment generated on surfaces, then a wire nozzle to an electrodrill definitively smooth out surfaces of cores and plates of valves - watch, that valves have not appeared are mixed.

3. Turn a head so that to provide installation possibility on it clamps for сжимания клапанных springs, - usually the head keeps within horizontally прокладочной a surface to the executor and клапанными springs from it.

4. Having enclosed оправку for spring extraction in a pusher nest, compress a spring.

5. Helping itself a screw-driver, by means of a small magnet take crackers of the cutting lock from the landing nest.
6. Release a clamp and remove клапанную a spring.
7. Take the valve from a head of cylinders. At a corresponding complete set remove маслоотражательный a cap.

Special adaptations for removal маслоотражательных caps are issued. It is alternatively possible to take advantage of usual nippers, - try not to damage a wall of a nest of a pusher that is fraught with decrease in adequacy of planting of the last.

8. At a corresponding complete set remove from a spring an adjusting washer, - again take advantage of a magnet or a screw-driver.
9. Operating in a similar manner, remove components of the remained valves. Remember that all components should be put in accurately marked containers or packages.

1. For compression клапанных springs on heads of the given type the special tool of standard type is usually used. However, on some models for installation of such tool there can be not enough empty seat, - in such cases it is necessary to take advantage of the tool described above струбцинного type.
2. If yet have not done it, remove components of the mechanism of a drive of valves (levers of a drive of valves or коромысла with the axes) and take a camshaft (). At a corresponding complete set remove also hydraulic proof-readers клапанных backlashes.

All removed components should be put in the organised order, special attention giving to clearness of marks, - at assemblage they should be established strictly on the former places!

3. Turn a head so that to provide an empty seat under installation of the tool for compression клапанных springs.

4. Having got the tool, compress a spring of the first valve, completely having unloaded its plate. Owing to development нагарообразования the plate can "become attached" to crackers of the cutting lock and for its clearing it is necessary slightly обстучать a hammer.

5. By means of a small magnet take crackers of the cutting lock from a landing flute on a valve core.

6. Release the tool and remove a plate and a spring from a valve core.

7. At a corresponding complete set remove маслоотражательный a cap. Usually маслоотражательный the cap is easier for removing from the valve taken from the engine (see more low).

8. Turn a head so that to provide possibility of removal from it of the valve.
9. Take the valve from a head of cylinders.

In case of need preliminary process flute edges under installation of crackers and an end face of a shaft of the valve a file with a small tooth.

10. At a corresponding complete set remove an adjusting washer клапанной springs, - take advantage of a magnet or a screw-driver.

11. Operating in a similar manner, remove from a head the remained valves. Remember that all components should be put in accurately marked containers or packages.

1. Check up working facets of plates of valves on presence of cracks, cavities and traces of excessive deterioration. Traces of a burn-out is most easier come to light at survey of a cylindrical part (corbel) of a plate. The corbel should be present on a plate without fail and have identical width on all perimetre of the valve. The rounding off or оплавление corbel edges specifies on прогар the valve. It is necessary to estimate also degree неплоскостности a face surface of a plate, - in the presence of an excessive deflection in its central part the valve is subject to replacement (it is desirable complete with the others).
2. Further it is necessary to check up a condition of a shaft of a core of the valve, - attentively examine its end face and flute edges under installation of crackers of the cutting lock, - make sure of absence задиров and agnails (especially if at valve removal it was necessary to resort to data processing of sites by a file). The end face of a core of the valve should be absolutely flat while some rounding off always takes place at considerable run of the unit. In case of need make restoration of planeness of an end face by проточки the valve.

3. Having taken for a drive a valve core on a flat surface (as that the windowpane can serve), check up it on presence of signs of a bend.

4. In summary measure diameter of a core of the valve in several places by means of a micrometer. Compare among themselves results of measurement, - the core should have a uniform thickness on all length. If the minimum maximum deviation of diameter of a core of the valve is not specified in Specifications, it is necessary to accept as a reference point value of 0.025 mm.

5. The valves defective or worn out over an admissible limit are subject to replacement (it is desirable complete with the others).

3. At presence near at hand the special device, check up effort developed by springs. Compare results of measurements to requirements of Specifications.
4. The given, defective and excessively worn out springs are subject to replacement (it is desirable all complete set).
5. Plates of springs seldom require replacement, nevertheless, estimate a condition of their working surfaces contacting to a spring and crackers of the cutting lock. In case of revealing of signs of deformation or cracks make replacement.
6. Estimate degree of deterioration of internal and external working surfaces of crackers of cutting locks. In case of need crackers are replaced in the complete set with the valve.

1. Having made sure of serviceability of a condition of valves, it is necessary to estimate degree of deterioration of directing plugs on size of backlashes of planting in them of cores of valves.

Preferably valves nevertheless to replace.

2. Before to start measurements, attentively examine directing plugs on presence of cracks, задиров, agnails and other mechanical damages. At use of plugs of demountable type (on all heads made of an aluminium alloy) estimate density of their planting, - presence of any weak point is inadmissible. All plugs should act on identical height (considering from saddles of springs).

3. Fix циферблатный a measuring instrument плунжерного type from the spring party of a head of cylinders. Slightly grease a core of the valve and fill it on the regular place. Densely press плунжер a measuring instrument to a lateral surface of a core of the valve around a shaft and null the device. Pull the valve here and there in the directing plug and consider the measuring instrument indication, - result write down. Develop a measuring instrument under 90 ° concerning initial position and repeat check. Having compared results of measurements among themselves, estimate size of ovality of the directing plug. Also compare results of both measurements to requirements of Specifications. Are issued special telescopic нутромеры, intended for definition of internal diameter of directing plugs of valves, - at use of the such device compare results of measurements to the standard requirements resulted in Specifications.

4. The worn out or damaged directing plugs are subject to replacement or проточке.

1. Make visual survey grew grey valves. Pay attention to presence of cracks, cavities and traces прогара. Approximately estimate depth of planting of saddles in a head, - excessive заглубление speaks about deterioration of components. In case of revealing of cracks of a saddle are subject to replacement.
2. At presence near at hand the special tool, check up saddles on presence of signs of ovality. Compare results of measurements to requirements of Specifications, in case of need make проточку.

In the absence of standard values it is necessary to consider maximum admissible ovality in size of 0.051 mm.

1. Carefully smooth out interfaced surfaces of a head of cylinders, completely having removed with all of them traces of a material of an old lining.
2. Planeness check is made by means of a special measuring instrument and щупа лезвийного type. Measurement is made lengthways ДП heads and on both diagonals of an interfaced surface.

As a planeness measuring instrument the steel ruler put on an edge can be used.

3. If the size неплоскостности exceeds 0.076 mm at length of 15.2 mm (or 0.152 mm for full length of an interfaced surface), the head of cylinders is subject проточке.

After проточки heads of cylinders of V-shaped engines it is necessary to pierce in appropriate way also a landing flange of the inlet pipeline for the purpose of indemnification of change of position of interfaced surfaces.

1. Usually cracks in head moulding appear around an arrangement of chambers of combustion the probability of their formation and near to candle apertures, saddles of valves and basic surfaces of levers of a drive of valves, however, is not excluded.
2. It is necessary to give special attention to condition check to flow around final ports.
3. It is necessary to remember, that visual survey does not allow to reveal moulding latent defects. Much more detailed picture of structure of a body of a head can be received during performance дефектоскопии with application of methods of a magnetic resonance (Magnaflux®), - for the heads made of pig-iron, or with application of fluorescing structures (Ziglo®), - for легкосплавных heads. A similar sort of check can be always made for quite reasonable payment on car repair shops.
4. The head having mechanical damages is subject to replacement.

1. If valves are recognised by suitable for the further use, it is necessary to make проточку face surfaces of their shafts and grinding in of working facets to the saddles.

New valves also are subject to grinding in after which realisation they become rigidly adhered to the saddles.

2. Turn a head of cylinders upside down.
3. Slightly grease cores of valves and fill them on the regular places in a head.
4. Raise the valve subject to grinding in over a saddle and put on a working surface of the last a little special притирочной pastes.
5. Slightly moisten a sucker притирочного the holder and fix last on the flat party of a plate of the valve.
6. Rotating приводную the tool handle between palms, start to grind in the valve to the saddle. Try to intercept more often the handle, simultaneously slightly changing position of the valve concerning a saddle in order to avoid formation of furrows.
7. Continue grinding in until on a working surface of a saddle the equal ring of matte grey colour of identical width on all perimetre is not formed.
8. Separate a drive and pass to grinding in of the next valve.
9. In summary do not forget to wipe carefully components, having removed with their surface all traces притирочной paste and an abrasive.
Springs, plates and crackers of cutting locks
10. Listed in heading of subsection components are not subject to regenerative repair and in case of an exit of their system should be replaced.

1. In automobile engines it is applied only two types of directing plugs: demountable (are used in легкосплавных heads) and built in (are used the heads made of pig-iron).

Pig-iron heads sometimes also are completed with demountable plugs.

2. Restoration of the worn out directing plugs can be made one of four ways: накатка; installation of inserts; расточка and replacement.
3. At накатке detail metal is deformed, that leads to backlash reduction. Plug centering is simultaneously restored. Накатка is the most simple and cheap method of restoration of directing plugs, however demands presence of special tool base and leads to considerable reduction of service life of the restored detail.
4. The bronze insert can be established in the worn out directing plug after its preliminary расточки. The inserts equipped with a carving are issued, - for their installation the plug it is necessary to cut preliminary a tap of the corresponding size. Thin-walled plugs of cutting type can be alternatively established, - they refuel in the chiseled plug then развальцовываются by the special tool and are pierced under the necessary size.
5. In the effective way, especially at restoration of plugs of the built in type is расточка them under valves большего the size. Расточка it is made by means of a special vertical drill in a range from 0.076 to 0.762 mm (more often - 0.381 mm). It is necessary to get repair valves of the corresponding size.
6. For replacement of plugs of the built in type they are necessary for drilling from a head. Then nests are chiseled under the demanded size and in them запрессовываются repair plugs. Planting of new plugs is carried out by means of a hammer and step выколотки. The special attention at installation of repair plugs should be given to their centering rather клапанных saddles. The landing height of the new plug also should be strictly to correspond original, - do not forget to measure it before removal of old plugs. Old plugs are tapped from a head also by means of a hammer and выколотки. Before installation of repair plugs it is necessary to define, whether they should carry out hermetic sealing of a water shirt of a head or not, - if yes, it is necessary to use corresponding hermetic, otherwise the plug and before planting it is necessary to grease walls of a reception nest with assembly greasing. Planting of plugs in a head is made from installation клапанных springs.

Use of a set of technological washers will help at the control of depth of planting of plugs.

1. If saddles of valves are in a satisfactory condition after realisation of grinding in of valves (see above) it is possible to start assemblage of a head of cylinders (see more low).
2. Restoration of the worn out or damaged saddles should be made in the conditions of a car-care centre workshop. At проточке saddles the special attention is given to their centering concerning directing plugs of valves.

1. At especially strong deformation of interfaced surfaces the head is subject to replacement.
2. Проточка interfaced surfaces of a head (if in it there is a necessity) it should be made in the conditions of a car-care centre workshop.

At removal a course проточки from surfaces of a head of a layer of metal standard requirements to geometrical parametres should be observed.

3. After returning of a head from its work it is necessary to clean very carefully once again (see above).

1. For installation drowned in a nest of a pusher of components of valves on heads of the given type the small screw-driver, a clamp for compression клапанных springs with оправкой, a little white greasing (циатима) and weight of patience is required.
2. Slightly grease cores of valves and establish them on the regular places in a head of cylinders.
3. At a corresponding complete set establish where follows adjusting washers клапанных springs.
4. Establish new маслоотражательные caps (if those are provided by a design). If the cap is put on directing plug, preliminary slightly grease an external surface of last. If instead of a cap the sealing ring is used, it is established after compression клапанной springs, but before planting to a core of the valve of crackers of the cutting lock.
5. Dress on a core of the valve a spring and its plate.
6. Establish оправку and compress a spring by means of a special clamp.
7. Working as a screw-driver as шпателем, fill bends of crackers of the cutting lock with dense greasing, is will help to fix temporarily crackers on a core of the valve to отпускания springs.
8. Picking up a screw-driver (again take advantage of greasing), plant crackers on the regular places on a valve core, densely having pressed them to a surface of the last.
9. Slowly release compressing клапанную a spring a clamp, - track, that crackers have not dropped out, - and remove it from the engine.
10. Operating in a similar manner, establish components on the remained valves.

11. Establish pushers, a camshaft () (do not forget to check up installation клапанных backlashes) and other components acting in film in the course of dismantle.

1. Slightly grease cores of valves and establish the last on the regular places in a head of cylinders.
2. At a corresponding complete set establish where follows adjusting washers клапанных springs.
3. Establish new маслоотражательные caps (if those are provided by a design). If the cap is put on directing plug, preliminary slightly grease an external surface of last. If instead of a cap the sealing ring is used, it is established after compression клапанной springs, but before planting to a core of the valve of crackers of the cutting lock.
4. Dress on a core of the valve a spring and its plate.
5. By means of the special tool compress клапанную a spring.
6. Plant on a core of the valve crackers of the cutting lock.
7. Slowly release клапанную a spring, - track, that crackers have not dropped out of a flute on a valve core.
8. Remove from a head the tool compressing a spring.
9. Operating in a similar manner, establish components on the remained valves.
10. Establish pushers, a camshaft () (do not forget to make adjustment клапанных backlashes, - see the Head of Adjustment and routine maintenance) and other components acting in film in the course of dismantle.