Honda Civic/Acura Integra

since 1994 of release

Repair and car operation

Cleaning and check of a condition of a head of cylinders

Cleaning

PERFORMANCE ORDER

1. Scratch out from interfaced surfaces of a head of cylinders, the inlet pipeline and a final collector all traces of a material of old laying and hermetic – try not to damage surfaces. Will essentially facilitate work application of a special razmyagchitel to which should impregnate the stuck deposits previously. 2. Remove from walls of water channels all traces of a scum. 3. A rigid wire brush carefully clean all available cavities and openings. At strong pollution of channels it is necessary to charge pro-cleaning of a head to experts. 4. "Banish" a tap suitable on the size each of boltovy openings, having removed from a carving corrosion products, traces of old hermetic and having restored the damaged rounds. In the presence of access to a source of the compressed air, blow openings, having removed from them shaving and small garbage. When using the compressed air do not forget to put on goggles! 5. A wire brush smooth out a carving of bolts of fastening of covers of a camshaft (ов). 6. Wash out a head solvent and carefully dry it. Use of the compressed air will allow to reduce essentially term of drying and will give a quality assurance of pro-cleaning of badly available cavities and openings. For removal of traces of the deposit, procedures of cleaning essentially facilitating performance, it is possible to get different structures in many shops of automobile accessories. Remember that such means usually are chemically aggressive and should be applied with observance of the appropriate measures of precaution, – strictly adhere to instructions of the manufacturers who have been usually brought on a label of container. 7. Wash out solvent of a yoke of a drive of valves and covers of bearings of a camshaft (ов), then carefully dry them. Try not to mix components in the course of cleaning – watch marking of accessory of details to the cylinders/valves. Use of the compressed air will essentially facilitate procedure performance (do not forget to put on goggles). 8. Wash out in solvent and carefully dry klapanny springs, their plates and crackers of cutting locks. Try not to mix components. 9. Scratch out bulk of the valves of deposits created on surfaces, then a wire nozzle to an electrodrill finally smooth out surfaces of cores and plates of valves – watch, that valves did not appear are mixed.

Condition check

Before making the decision on need of performance of machining of a head of cylinders, make careful check of its condition. Having attentively studied the material stated in the real subsection, make the list of components needing special attention.

Head of cylinders

PERFORMANCE ORDER

1. Attentively check a head of cylinders on existence of traces of leakages of cooling liquid, cracks and other damages. The burst head is subject to replacement without fail. In case of absence of confidence of definition of a condition of a head, it is necessary to send it for check in a car-care center workshop. If repair is not obviously possible, replace a defective head. 2. By means of a measuring instrument of planeness and щупа lezviyny type check an interfaced surface of a head on existence of signs of deformation (see an accompanying illustration). If not planeness exceeds admissible value according to standards (see. At the beginning of the present Chapter), a head it is necessary to send specifications in a pro-point in a mechanical workshop. 3. Check a condition of saddles of valves in each of combustion chambers. In case of identification of cavities, cracks, traces прогара, it is necessary to subject a head to the special regenerative repair which performance lies outside the limits of qualification of the average amateur mechanic and it should be entrusted to specialists of car-care center. 4. By means of a measuring instrument of DTI estimate size люфта cores of valves in directing plugs (see an accompanying illustration). The valve should be raised over a saddle approximately on 1.6 mm. It is necessary then to divide full size of lateral palpation of the valve into two to define a gap of landing of the valve in the directing plug. Compare results of the made calculations to requirements of Specifications. In the presence of doubts in correctness of definition of a condition of components, it is necessary to charge their check to experts of a workshop of car-care center.

Valves

PERFORMANCE ORDER

1. Attentively check working surfaces of valves on existence of signs of non-uniform wear, deformations, cracks, cavities and traces прогара. Estimate extent of operation of cores of valves. Check, whether there are no cracks in necks of cores. By rotation check valves on a bend of cores. Make sure of lack of cavities and signs of excessive wear of end faces (see an accompanying illustration). Identification of any of the listed defects demands delivery of valves for regenerative repair in a car-care center workshop. 2. Measure width of a cylindrical part (corbel) of a plate of each of valves (see an accompanying illustration). If the width of a corbel appears less than the value stipulated in Specifications, replace the valve.

Components of valves

PERFORMANCE ORDER

1. Estimate degree of wear of face parts of each of klapanny springs, check springs on existence of cavities. Measure free length of springs (see an accompanying illustration) and compare results of measurements to requirements of Specifications. If the spring appears more shortly than the bottom admissible limit, it is given and is subject to replacement. Check also on compliance to standard requirements the efforts developed by springs (this work it is better to charge to experts of a workshop of car-care center). 2. Establishing each of springs vertically on a flat surface, check severity of their tortsovka (see an accompanying illustration). Springs with tortsovka violation, as well as given, are subject to replacement. 3. Check plates of springs and crackers of their cutting locks on existence of cracks and wear signs. It is necessary to replace all details which were in a doubtful condition new in order to avoid development of defects in the future. 4. At considerable degree of wear of components of valves that is quite probable for the engine needing major maintenance, collect klapanny assemblies, establish them on the regular places in a head and pass to performance of procedures of service of valves (see. Service of valves).