1. Previously the conrod and the meetings of piston have to be compensated carefully. The rings have to be withdrawn of pistons.
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The piston rings are subject to the substitution without fail. |
2. Through the special adaptation they withdraw rings of pistons – try not to damage walls of the last incidentemente.
3. Scratch had been aspects of deposits from coal of the bottoms of pistons. After the removal of the main layer of deposits, there smooths a surface manually a brush of wire or a part of a paper of emery of fine granulation.
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Do not use to clean done from the gentle material and the pistons easily subject to a few mouths of wire of corrosion to the electric furadeira in absolute! |
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4th. Through the special adaptation the clean flutes under the rings installation in pistons (companion sees an illustration). |
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4b. It is possible alternatively to use with this finality a fragment of an old ring of piston (companion to see an illustration), nevertheless be careful – does not scratch a bottom and the walls of the flute and does not cut fingers. |
5. Having withdrawn the main deposits, wash out conrod meetings for the solvent and carefully dry them, whenever possible with the use of compressed air. Check passability of openings maslovozvratny in walls of bottom of flutes under the installation of rings of piston, and also oil openings in the lowest sticks leaders.
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When it uses compressed air do not forget of putting wide eyes! |
6. If the pistons of wall and the mirrors of cylinders are not damaged and excessively they are not used, and the block of the motor was not perforated and was not substituted, the necessity of the substitution of pistons disappears. The normal pistons stress is shown in the form of vertical aspects of the development in a persistent surface and a small weak point of the landing of the ring of superior compression in the flute. One does not forget of from what the substitution of rings of piston is done without fail, in spite of his state.
7. Attentively examine each one of pistons in the slits existence in a skirt, around edges under the installation of fingers of piston and around a rings agreement.
8. Check persistent surfaces of a skirt of the piston of the existence of scratches, the bottom – in the existence of through openings and progar in the edge. The scratches existence in a skirt can be considered as a sign of the long one overheats of the motor or too first ignition of the mixture of air fuel – the usefulness of check of the functioning of the system of cooling. Progara in the edges of the bottom is the certificate of an explosion. Anyway, the cause of the revealed violation has to be withdrawn to avoid a repetition. Also the hole of the soaked air, the incorrect configuration of the mixture of air fuel, the violation of the installation of a corner of an advancement of the ignition, the incorrect functioning of systems of the ignition and EGR can act like the possible reasons of enumerated defects of education.
9. The pointed pistons corrosion in the form of cavities talks about the blow in cameras of combustion and / or a case of the motor of cooling the liquid. Besides, it takes care what the cause of internal holes withdrew.
12. If the slit of landing of the piston in the cylinder will exceed the admissible value (to see Specifications), the block must be familiar to an in favor point with a selection of new pistons of the diameter of repair.
13. The fairness of estimate of the landing piston in sticks, having tried to make revolving component in opposite directions. The existence of any play of perceptible side talks about the excessive use of an union. For the correction of a situation it is necessary to hand conrod and piston meetings in a workshop of the service of the car where the necessary repair of recuperation and the substitution of fingers will be done.
14. The implementation of the proceeding of the removal of pistons of sticks (in case of such a necessity) also has to be entrusted to specialists of the service of the car. In parallel sticks it can happen for the existence of signs of a curve, support and other deformations with the use of the special diagnostic equipment.
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Unnecessarily it is not necessary to withdraw pistons of sticks. |
15. Check sticks to existence of slits and other mechanical damages. Temporarily discover the lowest heads, take insertions of old loads, rub beds in coverings and heads and the existence checks them of agnails, zadir and asperezas. Having finished the check, enclose at the place old insertions, establish coverings in the lowest sticks leaders and to the hand hold tight pins of fixation.
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If the motor is in the repair for aims of the elimination of the blow of fingers, substitute meetings conrod. |
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