Download A practical approach to motor vehicle engineering and by Allan Bonnick, Derek Newbold PDF
By Allan Bonnick, Derek Newbold
This article covers the entire vital and well known not obligatory devices of the IMI Technical certificate and NVQ point 1 & 2 syllabus, from healthiness and safeguard laws to fault discovering and exchanging elements. totally up to date, it additionally has motor vehicle upkeep strategies built-in all through, making it the fundamental first lecture room and workshop textual content for all scholars of motorized vehicle engineering, apprentices and prepared amateurs. The textual content is made available to all degrees of skill via its transparent, logical procedure, first-class illustrations and step by step improvement of conception and perform. there's tips on getting ready portfolios of proof, and useful routines are integrated to illustrate genuine workshop perform. *
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Extra info for A practical approach to motor vehicle engineering and maintenance
The cylinder head is illustrated in Fig. 27. Cylinder head tightening sequence To avoid distorting either the cylinder head or the head gasket the tightening sequence (order) must be followed. The torque settings must also be correct to prevent over-stretching of Engines and lubrication Fig. 27 Cylinder head – exploded view 35 36 A practical approach to motor vehicle engineering and maintenance the bolts and studs or stripping of the threads. The manufacture’s manual must always be referred to and the procedure followed; this will ensure that the above problems are not encountered when reassembling the cylinder head to the engine.
Dry sump . total loss . The object of the lubrication system is to feed oil to all the moving parts of the engine to reduce friction and wear and to dissipate heat. Modern oils also clean the engine by keeping the products of combustion, dirt, etc. in suspension. This makes it essential that oil and filters are changed in accordance with the manufacturers’ instructions. It can be seen from this that the oil performs four important functions. It keeps friction and wear on the moving parts to a minimum.
It is important that only the correct grade of oil is used in a given vehicle and the information about that is given in the driver’s handbook or the workshop manual. In most modern engines multi-grade oils are recommended regardless of temperature. An SAE10 W/40 oil, for instance, can be used in most climates thus simplifying the selection of oil. It is important to know that the SAE grades only give information on the viscosity of the oil and not the quality. This can be found by making reference to the API (American Petroleum Institute) classification.