motor vehicle mechanic i
Contents
1. Classify engines by i Values ii Number and Arrangements of Cylinders iii Methods of cooling iv Method of ignition v Number of strokes vi Firing order 9 04 ENGINE COMPONENTS AND FUNCTIONS Describe the main component parts of the engine Main parts of the engine i Engine block ii Cylinder head iii Crash shaft iv Fly wheel v Connecting rod vi Piston and rings vii Camshaft viii Valves ix Tappets etc Using a dismantled engine discuss the various components listed in the sub skills and their positions in the engine and also carry out measurement and alignment of the piston con rod camshaft etc Revised December 2010 Copyright reserved NVTI Testing Division INSTRUCTIONAL NO TASK CRITICAL POINTS SUB POINTS TECHNIQUES 10 0 PRINCIPLES AND 10 1 The student will be able 10 3 Use sketches or OPERATION OF to 10 2 Principles and operation of chart to explain the ENGINES Describe the operation of the the 2 stroke 4 stroke internal construction and of stroke and 4 stroke petrol combination engine operation of 2 and 4 engines stroke Petrol and Diesel 10 2 1 Advantages and engines 10 1 1 State the advantages disadvantages of Petrol and and disadvantages Diesel engines 10 3 1 Discuss the of petrol and diesel engines advantages of petrol and 10 2 2 Comparison of main diesel engines 10 1 2 Differentiate between parts of single and multi2. NATIONAL VOCATIONAL TRAINING INSTITUTE TESTING DIVISION TRADE TESTING REGULATIONS AND SYLLABUS TRADE MOTOR VEHICLE MECHANIC LEVEL CERTIFICATE ONE Revised December 2010 Copyright reserved NVTI Testing Division A ii INTRODUCTION i The review of this syllabus has been generally influenced by the demands of industries due to its continuous change as a result of technological advancement and the changing needs of society It was also influenced by the TVET reforms under the directions of the new educational reform with the view to opening up further education and training opportunities to TVET graduates The certificate ONE syllabus is designed to respond to the following level descriptors QUALIFICATION KNOWLEDGE LEVEL SKILLS AND ATTITUDE Certificate 1 To demonstrate a broad knowledge base incorporating some technical concepts To demonstrate knowledge of the theoretical basis of practical skills To demonstrate knowledge in numeracy literally IT and Entrepreneurial skills 1 Require a wide range of technical skills 2 Are applied in a variety of familiar and complex contexts with minimum supervision 3 Require collaboration with others in a team The rational of this syllabus is to establish the level of knowledge and skills required by mechanics over a wide range of applications including the development of an ability to diagnose faults recomme
3. UNF UNC Nut Bolts Philip Screw Wing and thumb nut and pins etc 6 1 2 Locking devices Locking plates and self lock nuts pitch bolts and locking wire 6 1 3 Sealing devices Gasket joints plugs sealing compounds oil seals etc 6 1 4 Pipe unions and joints Copper flexible plastic pipes straight coupling elbow union swaged and pipe fixing lose clip etc know the difference between various threads bolts nuts locking and sealing devices etc 6 2 1 Trainee should be able to identify thread pitch class series and designation 6 2 2 Trainees should be able to rethread fasteners and extract broken stud or bolt Guide trainees to identify suitable taps and dies to perform rethreading operations 7 0 Basic Metal Works Bench Fitting 7 1 The trainee should be able to carry out the following i Filling ii Sawing iii Drilling iv Marking out etc 7 2 Effective use of the following tools e g Files Hacksaw Drill bit Marking out tools etc 7 3 Demonstrate how to carry out the following operations Filling Sawing Drilling Marking out to construct an object such as Light G Clamp or Try Square Revised December 2010 Copyright reserved NVTI Testing Division INSTRUCTIONAL NO TASK CRITICAL POINTS SUB POINTS TECHNIQUES 8 0 Introduction to the 8 1 The student will be able 8 2 Body chassis and drive 8 3 Guide stu
4. 10 3 2 Guide students to the main parts of single and cylinder engines dismantle 2 and 4 multi cylinder engines stroke petrol and diesel engines 10 3 3 Examine the cylinder bore crank shaft valve seat and face etc for wear and cracks 11 0 Valve operating 11 1 The students will be able 11 2 Crankshaft positions and 11 3 Use sketches or mechanism to Explain the function of valve operating mechanism on an engine Explain the meaning of valve timing terms Perform valve timing on an engine valve operating mechanism for Side valve Overhead valve Overhead camshaft Valve timing i Lead ii Lag iii Overlap charts to explain the operating mechanism Assist students to discuss the meaning of the valve terms listed in the sub skills Guide students to perform valve timing on an engine and determine the overlap period Students to perform valve adjustment on Revised December 2010 Copyright reserved NVTI Testing Division INSTRUCTIONAL NO TASK CRITICAL POINTS SUB POINTS TECHNIQUES overhead and side valve engine Assist students to study methods of connecting camshaft and identify timing marks provided on the engine 12 0 CYLINDER HEAD 12 1 Dismantling cleaning OVERHAULING and examination of DECARBONISING cylinder head 12 2 Use appropriate cleaning 12 3 Guide students in Dismantle valves clean and agents and valve seat and face t
5. SUB POINTS TECHNIQUES 21 0 EXPLODED AND 21 1 Reading of exploded and 21 2 Basic ideas in 21 3 Assist students in SECTIONAL VIEWS sectional view of components assembling various assembling various and assemblies components automotive components 22 0 DRAWING OF 22 1 Conventional 22 2 Draw symbols of various 22 3 Guide students to ELECTRICAL representation of battery earth electrical components draw various electrical COMPONENTS connection contact breaker components points fuse resistor capacitor winding lamp switch 23 0 FREE HAND SKETCH 23 1 Sketch of coil ignition 23 2 Sketch simple 23 3 Assist students to system valve timing diagram mechanical fuel pump water pump petrol injection systems line diagram of lubrication system oil pump oil filter By pass and full flow spark plugs rear construction hub construction straight tooth gear helical gear line diagram of propeller shaft universal joint crown wheel and pinion assembly drum and disc brake assembly master cylinder engine gear box rear axle braking steering and suspension types of steering gear boxes types of tyre design components in first and third angle projections sketch simple components in first and third angle projections Revised December 2010 Copyright reserved NVTI Testing Division
6. of solids vehicle expansion heat capacity liquids and gasses and coefficient of linear expansion 2 0 HEAT TREATMENT OF 2 1 Annealing normalizing 2 2 Classification of various 2 3 Demonstrate with METALS hardening tempering metals the students the various Properties of materials heat treatment in the elasticity ductility toughness workshop hardness and brittle 3 0 STRESS AND STRAIN 3 1 Definition of Stress and 3 2 Solve problem involving 3 3 Guide students to Strain Tensile compressive direct stress and strain Make solve simple problems and shear stress Hooks law a load extension graph for mild involving stress and young modules and relating to steel strain the stiffness of material 4 0 ENERGY 4 0 Definition of energy types 4 2 Simple calculations 4 3 Guide students to examples potential kinetic and relating to motor vehicle E g calculate simple chemical Kinetic and potential energy problems on energy relating to motor vehicle 5 0 WORK 5 1 Definition of work as a 5 2 Simple calculations 5 3 Assist student to form of energy Work done in relating to motor vehicle calculate simple linear motion and work done problems on work done in angular motion relating to motor vehicle 6 0 COMBUSTION AND 6 1 Definition and explanation 6 2 Definition of forms such 6 3 Guide students to FUELS of combustion in petrol and as calorific value volatility know about combustion diesel engine composition o
7. oil level in the bump Identify the type of lubricants i engine used in vehicles ii gear box Guide students to iii final drives differentiate between the iv hub steering etc following lubricants i engine oil ii Gear oil iii Grease 27 0 OIL RATINGS 27 1 The terms used for oil 27 2 Oil terms 27 3 Assist students to ratings i Viscosity explain the following ii SAE numbers lubricating terms iii Viscosity index i Viscosity iv API ii SAE numbers iii Viscosity index iv API 28 0 COOLING SYSTEM 28 1 Purpose of cooling 28 2 The function of the 28 3 Guide students to system and the function of the main components Types of cooling system a Liquid cooling b Air cooling following components a radiator b thermostat c water pump d fan Identify the construction of the a Water cooling b Air cooling dismantle examine and reassemble the following components in the cooling system a radiator b water pump c fan Revised December 2010 Copyright reserved NVTI Testing Division NO TASK CRITICAL POINTS SUB POINTS INSTRUCTIONAL TECHNIQUES 29 0 TYPES OF LIQUID COOLING SYSTEM 29 1 Describe the operation of water cooling system 29 2 Operation of water cooling system i thermosyphon ii Pump assisted 29 3 Guide students to explain the operation of i Thermosyphon cooling system ii Pump assisted pressurized iii Explain the advantages
8. petrol and diesel fuels discuss the composition of petrol and diesel fuels 17 0 FUEL PUMP 17 1 Describe the 17 3 Use sketches or construction and operation of mechanical and electrical fuel pumps sketch and label the main parts State the advantages and disadvantages of mechanical and electrical fuel pumps Dismantle and reassemble a mechanical fuel pump and test for satisfactory operation Sketch and label the multi jet carburetor and describe its operations 17 2 Mechanical and Electrical fuel pumps Dismantling and reassembling a mechanical fuel pump charts to explain the construction and operation of mechanical and electrical fuel pumps Students to sketch and label the main parts of the mechanical and electrical fuel pumps Guide students to dismantle a mechanical fuel pump examine the parts reassemble and test for satisfactory operation Revised December 2010 Copyright reserved NVTI Testing Division INSTRUCTIONAL NO TASK CRITICAL POINTS SUB POINTS TECHNIQUES 18 0 EXAMINATION OF A CARBURETOR 18 1 Dismantling examining 18 2 1 Examine the 18 3 1 Assist trainees to and assembling of carburetor carburetor jet for blockage and dismantle and assemble a leakage carburetor 19 0 ELECTRONIC FUEL 19 1 The students will be able 19 2 Electronic injection 19 3 Guide students to INJECTION to system discuss the purpose of the Explain the purpose of the e
9. to 16 3 Guide students to SIMPLE SKETCHES OF uses of dimensions in sketches illustrate various components use lines and simple SOLIDS and drawing sketches of solids 17 0 GEOMETRICAL 17 1 Triangles Squares 17 2 Use compass protractor 17 3 Assist students to CONSTRUCTION Rectangles Ellipse Circles ruler divider to construct construct Geometrical and its parts prisms and triangles squares rectangles drawings frustum of cones ellipse circles and its parts prisms and frustum of cones 18 0 ORTHOGRAPHIC 18 1 Sketching and drawing of 18 2 Drawing of the three 18 3 Assist students to PROJECTION simple component in views e g Front end and plan draw the orthographic orthographic projection first projection and third angle with dimensions 19 0 DRAWING OF 19 1 Pentagon hexagon 19 2 Drawing of bolts with a 19 3 Help student to POLYGONS heptagon octagon etc using given specification construct the various of division of lines and the polygons by using the general method division of lines or general method 20 0 TOLERANCE 20 1 Introduction to limits 20 2 Draw indicating the 20 3 Assist students to and tolerance and their inclusion in the dimensioning of sketches and drawing upper limit and the lower limit draw tolerance Revised December 2010 Copyright reserved NVTI Testing Division CERTIFICATE ONE TRADE SCIENCE AND CALCULATIONS INSTRUCTIONAL NO TASK CRITICAL POINTS
10. 8 2 Wiring Systems 48 3 Use sketches or and state suitable cable for a i Earth return system chart or suitable circuit materials to explain earth ii Insulated earth return and insulator return system sizes and colour Reasons for making wires in iii Sizes of cables wiring in coding and reason of stands strands using different colour and sizes of wire The reason for column coding Colour coding of wires of wires 49 0 BATTERY 49 1 The purpose of battery 49 2 Battery construction 49 3 Use charts and the construction of lead acid battery Checking the strength of battery using basic equipment and preparing electrolyte i Battery case ii Battery plates Battery testing i Hydrometer ii Voltmeter iii High rate discharge tester sketches or real objects to describe the constructional details of lead acid battery Guide students to perform simple test on batteries using the equipment listed in the sub skills Revised December 2010 Copyright reserved NVTI Testing Division CERTIFICATE ONE TRADE SCIENCE AND CALCULATIONS INSTRUCTIONAL NO TASK CRITICAL POINTS SUB POINTS TECHNIQUES 1 0 HEAT AND 1 1 Conduction Convection 1 2 Method of measuring 1 3 Guide students to TEMPERATURE and radiation temperature freezing and boil solve simple problems Thermal expansion linear point of water and expansion related to the motor superficial and cubical and contraction
11. D ELECTRONICS M V E i Motor Vehicle Electrical and Electronics by V A W Hillier and E Pittuck 3 4 or 4th Edition TOOLS Set of flat spanners set of ring spanners set of socket wrenches set of Allen keys set of flat screw drivers set of Philip star screw drivers Pliers Adjustable spanners 9small medium and large sizes Feeler gauge O Torque wrench a NOO EO DOES Revised December 2010 Copyright reserved NVTI Testing Division 11 Valve lapping grinding stick and paste 12 Ball pein hammer 13 Rawhide mallet hammer 14 Hacksaw frame and blades 15 Chisels 16 Files single cut double and rasp cut 17 Tin shears 18 Scrapers 19 Reamers and punches 20 Piston clamp 21 Oil can 22 Grease gun EQUIPMENT 1 Vice 2 5 tonnes hydraulic jack 3 Drilling machine 4 Surface plate 5 Vee blocks 6 Angle plate 7 Try square steel rule 8 micrometer 0 25mm range 25 50mm range 50 75mm range 9 Venier caliper 10 Internal micrometer 11 Dial gauge 12 Alignment gauge 13 Timing light stroboscope 14 Hydrometer Revised December 2010 Copyright reserved NVTI Testing Division CERTIFICATE ONE TRADE THEORY INSTRUCTIONAL NO TASK CRITICAL POINTS SUB POINTS TECHNIQUES 1 0 Identify various parts in the Familiarization visit through INTRODUCTION TO Use service manual to find vocation rotational training in the AUTOMOTIVE torque specification t
12. ENTS AND GAUGES 4 1 Identify types of measuring devices and gauges such as Rule Micrometer inside outside and depth digital micrometer Viewer caliper 4 1 2 Gauges Dial gauge small hole gauges go no go gauges compression gauge tyre pressure gauge and vacuum gauges 4 1 3 Meters Dwell meter Tacometer and Multimeter 4 2 Select and use feeler gauges to measure valve clearance to specification Use a rule micrometer to measure length diameter of a rod and depth of a hole Use a vernier caliper to measure diameter of a cylinder bore Use a dial gauge to determine fly wheel concentricity and the use of compression gauge Use multimeter to measure voltage current and resistance etc 4 3 Guide students to use the various instruments and gauges to measure the various specifications mentioned in the sub skills Revised December 2010 Copyright reserved NVTI Testing Division INSTRUCTIONAL NO TASK CRITICAL POINTS SUB POINTS TECHNIQUES 5 0 5 0 Materials Appearance properties uses 5 2 The trainees should 5 3 Guide students and identification of materials construct chisel drill drift to identify and select e g Steels cast iron copper spanner with a selected suitable suitable materials for aluminum lead tin brass material the parts bronze plastics construction 6 0 Securing devices 6 1 Thread types and sizes 6 2 The trainee should be able to BSF BA
13. POINTS TECHNIQUES 42 0 SHOCK ABSORBERS 42 1 The purpose of shock 42 2 Dampers 42 3 absorber i Use sketches chart or real object to explain the construction and operation of the telescopic and piston types The different types of shock Types of shock absorbers of shock absorbers absorber and state their i Telescopic operations ii Piston ii Guide student to remove and test telescopic shock absorber for serviceability iii Remove and refit shock absorbers to the vehicle and observe necessary 43 0 STEERING SYSTEM 43 1 The purpose of the 43 2 Front axle and steering 43 3 Use sketches chart or real steering system arrangement object to explain the purpose of the steering system Sketch and identify the Components and operation of Guide students to identify the various parts of the steering the steering system parts of the steering system on system and explain its a vehicle and discuss how the operation steering system operates 44 0 STEERING GEAR 44 1 The various types of 44 2 Types of steering gear 44 3 Guide students to BOXES steering gear boxes and state its constructional and operational principle boxes and their construction i Rack and pinion ii Recirculation ball iii Cam and peg dismantle examine and re assemble and adjusting of the various types of steering gear boxes also observe the necessary safety precautions Revised December 2010 Copyright reserved NVTI Testing Divis
14. aking system Sketch the layout of the hydraulic braking system label its parts and describe the operation of the system Compare the drum brake and disc brakes and state its advantages and disadvantages arrangement Layout types and operation of hydraulic braking system i drum type ii disc type comparison of drum and disc brakes charts to explain the i purpose ii types of the braking system iii discuss the operation of drum brakes using leading and trailing shoes and also the operation of the disc brake e Guide students to inspect various of types of hydraulic braking system Revised December 2010 Copyright reserved NVTI Testing Division NO TASK CRITICAL POINTS SUB POINTS INSTRUCTIONAL TECHNIQUES i Drum brakes ii Disc brakes iii Dismantle and reassemble 39 0 BRAKE LINING MATERIALS 39 1 Analyse the composition of brake lining material and methods of attachment Outline the requirements for brake fluid 39 2 Brake lining material Brake fluid requirements 39 3 Discuss with students the composition of brake lining material and method of attachment to show pad support plate a Explain the need for the use of brake fluid in the hydraulic braking system b Safety requirement for handling brake fluid 40 0 FAULT DIAGNOSIS 40 1 Rectify simple brake faults 40 2 Brake faults i Lack of stopping p
15. and disadvantages of the two systems 30 0 AIR COOLING SYSTEM 30 1 Describe the operation of the air cooling system Compare the advantages and disadvantages of water and air cooling systems State the causes of overheating in the cooling system Water and air cooling Advantages and disadvantages Causes of overheating i air cooling system ii water cooling system 30 3 Guide students to examine the air cooling system noting the construction of the fins and blower Dismantle examine and reassembled a air cooling system b Pressurized cooling system Revised December 2010 Copyright reserved NVTI Testing Division INSTRUCTIONAL NO TASK CRITICAL POINTS SUB POINTS TECHNIQUES 31 0 TRANSMISSION 31 1 The students will be able SYSTEM to Explain the purpose of the transmission system 31 3 Use charts or 31 2 Types of transmission sketches to explain the Identify the types of i manual basic principle of manual transmission ii automatic and automatic transmission Transmission system main The main components of the components Use sketched or real transmission system and state i Clutch object to show the layout their functions ii Propeller shaft of the conventional iii Gear box transmission system of a iv Final drive vehicle v Differential 32 0 CLUTCH 32 1 Describe functions of the 32 3 Discuss the clutch functions of a clutch in 32 2 Types of clut
16. ches vehicles Identify the types of clutch i Single plate a multi spring Use sketches charts or b diaphragm spring real objects to explain the ii Multi plate construction and operation of single and multi plate 33 0 FAULT DIAGNOSIS 33 1 Diagnose and rectify 33 2 Fault diagnosis 33 3 Guide students to CLUTCH minor faults Bleed the hydraulic clutch system a Excessive Pedal free play b Slip c Drag d Judder Bleeding Hydraulic Clutch System i examine the various clutch units noting any fault found ii Bleed the hydraulic clutch system iii Adjust clutch pedal free play Revised December 2010 Copyright reserved NVTI Testing Division INSTRUCTIONAL NO TASK CRITICAL SKILLS SUB SKILLS TECHNIQUES 34 0 GEAR BOX 34 1 The purpose of the gear 34 2 Types and operation of 34 3 Guide students to box and describe operation of gearboxes remove and dismantle various types of gearbox i Sliding mesh sliding mesh constant ii Constant mesh mesh and synchromesh iii Synchromesh gear boxes ii Check component for wear iii Check gear engagement mechanism vi Remove and refit bearings bushing and beams 35 0 PROPELLER SHAFT 35 1 Identify the various types 35 2 Propeller shafts 35 3 Guide students in UNIVERSAL JOINT of i open type removal and installation i propeller shaft ii torque tube of the propeller shaft and ii universal joint universal joints
17. dents to motor vehicle to arrangements of vehicles inspect and discuss the Components and position in differences in the body 8 1 1 Identify the types of motor vehicles Cars and chassis and drive body chassis construction and trucks arrangement of i Cars ii drive arrangements of the clutch trucks motor vehicle Gear box Propeller shaft Guide students to 8 1 2 Describe the main Rear observe describe and components and their discuss why the main positions in the motor vehicle 8 2 1 Main Components and components are their functions positioned in their 8 1 3 Explain the functions if i Engine various places in cars the main components of the ii Transmission and trucks motor vehicle iii Body iv Steering Discuss the functions of v Suspension the main components of vi Wheels tyres cars and trucks vii Brakes viii Clutch Guide students to ix Gear box observe the methods of securing and locking the components to the chassis 9 01 ENGINE Purpose of an engine 9 3 Guide students to discuss the purpose of the engine Use sketches chart or 9 02 TYPES OF ENGINE Identify the two types of engine i Petrol LPG real engines to guide ii Diesel Biodiesel students differentiate between petrol engine and diesel engine Revised December 2010 Copyright reserved NVTI Testing Division NO TASK CRITICAL POINTS SUB POINTS INSTRUCTIONAL TECHNIQUES 9 03 ENGINE CLASSIFICATION
18. e system ii Explain and demonstrate the procedure of phasing and calibration of injection pump iii Explain the purpose of heater plugs and state their location on the engine iv Explain the importance of fuel filtration Revised December 2010 Copyright reserved NVTI Testing Division INSTRUCTIONAL NO TASK CRITICAL POINTS SUB POINTS TECHNIQUES 22 0 FUNDAMENTALS OF 22 1 Explain the term 22 2 Auto electronics 22 3 Guide students to ELECTRONICS electronics brainstorm the meaning Identify and list the electronic components on a vehicle Describe the functions of each components Identify the electronic symbols in a circuit Electronic Components i diodes ii transistors iii resistors iv capacitors v LED vi transducer vii coil viii motor Functions of the components Symbols in a circuit of the term electronics and use sketches charts or real objects to show the various electronic components used on the motor vehicle Guide students to discuss the functions of the electronic components used on motor vehicles and use chart or sketches to discuss the symbols used in electrical and electronic circuits Revised December 2010 Copyright reserved NVTI Testing Division INSTRUCTIONAL NO TASK CRITICAL POINTS SUB POINTS TECHNIQUES 22 0 IGNITION SYSTEM 22 1 The students will be able 22 2 Coil ignition system 22 3 Guide studen
19. etc Universal joints i Constant velocity joint ii Hookes joint Guide students to use iii Layrub joint correct equipment to check a propeller shaft Carry out checks on propeller for shaft for bow and twist i Bow ii twist 36 0 REAR AXLE 36 1 The purpose the 36 2 Main components Guide students to construction and operation of the rear axle Sketch and label the main components of the rear axle i Differential unit ii Crown wheel and pinion iii Half shaft iv Oil seal v Hub bearing observe the method of actuating the clutch ona vehicle Revised December 2010 Copyright reserved NVTI Testing Division INSTRUCTIONAL NO TASK CRITICAL POINTS SUB POINTS TECHNIQUES Types of rear axle gears and Main types of rear axle gears Guide students to explain where it is used i Plain bevel dismantle examine and ii Spiral bevel identify the function of iii Hypoid bevel each part of the clutch Worm gear types Reassemble and adjust clutch Check clutch pedal free play 37 0 The differential unit 37 1 i Detail information 37 2 Operational principles of 37 3 Dismantle about differential the differential unit differential unit and ii Function of the study various differential unit components iii Types of hub construction Dismantle identify parts in each type and re assemble 38 0 Braking System 38 1 The purpose of the 38 2 Hydraulic brake 38 3 Use sketches or bre
20. f petrol Composition of diesel air fuel ratio Properties of fuel flash point octane rating cetane rating ignition quality fuel Revised December 2010 Copyright reserved NVTI Testing Division CERTIFICATE ONE TRADE SCIENCE AND CALCULATIONS INSTRUCTIONAL NO TASK CRITICAL POINTS SUB POINTS TECHNIQUES 7 0 POWER 7 1 Definition of Power as a 7 2 Simple calculation relating Assist students to know rate of doing work to engine power at the end of about engine power the physical 8 0 MOMENTS 8 1 Definition of moments 8 2 Classes of levers 8 3 Guide students to Principle of moment Simple calculations on solve calculations on Centre of gravity moment centre of gravity and moment and torque Torque torque relating to motor vehicle 9 0 COMPRESSION RATIO 9 1 Definition of swept 9 2 Definitions causes and 9 3 Assist students to volume clearance volume effects of deterioration pre solve symptoms on stroke bore TDC BDC and ignition running on and diesel compression ratio Compression ratio Knock 10 0 DENSITY 10 1 Definition of density and 10 2 Simple calculations on 10 3 Guide students to relative density density and relative density calculate simple problems on density and relative density 11 0 THERMOMETERS 11 1 Four types of 11 2 Explain the working 11 3 Assist students to thermometers such as liquid principles of four types of know about in glass bimetallic gas thermome
21. he use of cleaning decarbonizes grinding paste to lap in valve agents and appropriate examine cylinder head for tools crack bend and seat wear 13 0 CRANK ARRANGEMENT 13 1 Identify crank 13 2 Crankshaft arrangement 13 3 Guide students to AND FIRING ORDERS arrangements and firing and firing orders examine the crank orders 2 4 and 6 cylinder in line arrangement of a 4 and State the reasons for giving engines 6 cylinder in line valve clearance differences e g engines noting their Exhaust and inlet valves 2 4 and 6 cylinder vice cylinder firing orders engines 4 cylinder opposed 14 0 FUEL SUPPLY SYSTEMS 14 1 The students will be able 14 2 Fuel supply system that is 14 3 Use sketches or to Explain the purpose of the fuel supply system Petrol and Diesel chart to explain the purpose of the fuel supply systems Petrol and Diesel Revised December 2010 Copyright reserved NVTI Testing Division INSTRUCTIONAL NO TASK CRITICAL POINTS SUB POINTS TECHNIQUES 15 0 PETROL SUPPLY 15 1 Sketch the layout of 15 2 Layout and main 15 3 Guide students to petrol supply system Explain components discuss the main the function of the main i tank components of a fuel components ii pipeline supply system iii filter Describe the operation of iv pump petrol supply system v carburetor injector 16 0 FUELS 16 1 State the properties of 16 2 Properties of fuels 16 3 Assist students to
22. ion INSTRUCTIONAL NO TASK CRITICAL POINTS SUB POINTS TECHNIQUES 45 0 WHEELS AND TYRES 45 1 The purposes of wheels 45 2 Types of wheel rim 45 3 Use sketches or real and tyres and identify the i pressed steel objects rims to help students various types of wheel rims ii wire spoke to i discuss the need for wheels and tyres on vehicles ii differentiate between different types of wheel rims Describe the effect of faulty listed in the sub skills wheels on vehicle running Faulty wheels and vehicle running Guide students to inspect various types wheels and tyres and determine any abnormalities 46 0 ELECTRICAL 46 1 The basic electrical 46 2 Basic electricity 46 3 Use sketches or charts to FUNDAMENTALS terms i AC i explain basic electrical ii DC Electrical circuits i Series ii Parallel terms ii discuss the difference between series and parallel circuits iii explain Ohm s Law Revised December 2010 Copyright reserved NVTI Testing Division INSTRUCTIONAL NO TASK CRITICAL SKILLS SUB SKILLS TECHNIQUES 47 0 BASIC ELECTRICAL 47 1 The functions of 47 2 Electrical Components 47 3 Guide students to COMPONENTS electrical components i relay i clean electrical contacts ii resistor ii test and replace fuses and bulbs iii lamp iii test electrical circuits cables and terminals iv fuse v switch 48 0 ELECTRICAL WIRING 48 1 The two wiring systems 4
23. lectronic fuel system electronic fuel injection system 20 0 ELECTRONIC FUEL 20 1 Identify and name the 20 2 Types of systems 20 3 Use sketches charts INJECTION two petrol injection systems Name the various components of the electronic fuel injection system and describe their role i Single point injection ii Multi point injection Name the role of components of the electronic fuel injection system or real object to guide students to examine the layout of the petrol injection system on a vehicle and identify the types I Single point ii Multi point Identify and name the various components of the electronic fuel injection system i Electronic Control Unit ECU ii Sensors iii Actuators Revised December 2010 Copyright reserved NVTI Testing Division NO TASK CRITICAL POINTS SUB POINTS INSTRUCTIONAL TECHNIQUE 21 0 COMPRESSION IGNITION ENGINE CI FUEL SYSTEM 21 1 Basic operation and purpose of the main components Comparison of its advantages and disadvantages over the carburetor system Phasing and calibration Setting of maximum and minimum fuel delivery of the in live injection pump Pressure setting and spray pattern Timing of injection pump fitted to an engine 21 2 Consider safety precaution required in carrying out procedure 21 3 Guide students to i remove and replace fuel filters bleed air from th
24. nd by means of rectifying these faults and to test and analyze the performance of the vehicle after repairs or modification has been completed Revised December 2010 Copyright reserved NVTI Testing Division THE GENERAL OBJECTIVES The objectives of this course are to give the apprentices a systematic training both theoretically and practically It is expected that much emphasis will be laid on the practical aspect of the training during in school and on the job training About 60 could be allocated to practical training centres and other institutions approved by the National Vocational Training Institute This training syllabus is prepared to serve as a guide for employers instructors and other parties concerned with training in the preparation of their individual programmes It is necessary that training become effectively planned and controlled as effectively as possible so that apprentices derive much benefit from their training THE COURSE COMPONENTS Trade Theory Science and Calculation Trade Drawing General Paper Trade Practical EXAMINATION The candidates would be examined in the FIVE components listed in C above Practical work must be carefully planned to illustrate application of the theory and to provide maximum opportunity for shop practice laboratory work and demonstration KNOWLEDGE AND SKILLS REQUIREMENT The prime objective of the programme is to provide knowledge and skills of the trade in a manner
25. o correctly shops within the training CAREERS tighten engine vehicle centre and automotive dealer components shops a Torque wrench 2 0 TOOLS AND Select the correct tool or b File EQUIPMENT equipment for a given c Chisel operation d Hammer e Valve spring compressor f Spanner assorted etc Using hand tools help students to learn the safe use ii Special purpose of the tools equipment a Calipers Discuss how the measuring b Steel rule instruments and other c Feeler gauges etc iii Other Workshop Equipments wo aA FDD Drilling machine Air Compressor Axle stand Bench vice Grinding machine Mobile crave etc equipment listed are used in the auto industry paying attention to safety precautions Revised December 2010 Copyright reserved NVTI Testing Division NO TASK CRITICAL POINTS SUB POINTS INSTRUCTIONAL TECHNIQUES 3 0 SAFETY PRECAUTION 3 1 Differentiate between the various types of safety ina workshop 3 2 Note types of safety in the workshop A Personal Safety in the Workshop i Good ventilation ii Cleanliness of shop iii Proper use of protective clothing iv Provision of guard around rotating parts v Proper storage of inflammable material vi use of rigid support for raised 3 3 Discuss with the students the following a Importance of safety in a workshop 4 0 TESTING AND MEASURING INSTRUM
26. ow the layout and i wet sump ii dry sump path of oil flow of the wet and dry lubrication Describe how oil is distributed Modes of distribution systems in the engine i Splash ii Mist Discuss the mode of oil COMPONENTS OF THE State the functions of iii Pressure distribution in the engine LUBRICATION SYSTEM components in lubrication system Identify the following Guide students to service components the components listed in i oil pump the sub skills ii oil switch iii oil gallery iv oil filters 25 1 The purpose of the 25 2 Identify their positions 25 3 Guide students to 25 0 ENGINE CRANKCASE crankcase ventilation system on the engine i Identify the type of VENTILATION Describe the operation of the positive type ventilation system Explain the purpose of safety warning devices i oil pressure relive valve ii oil pressure warning lamp iii oil gauge iv dip stick ventilation system on an engine explain the operation of the crankcase ventilation system using sketches or chart Guide students to identify the devices on a vehicle and explain their purposes Revised December 2010 Copyright reserved NVTI Testing Division INSTRUCTIONAL NO TASK CRITICAL POINTS SUB POINTS TECHNIQUES 26 0 LUBRICANTS 26 1 State the purpose of 26 2 Lubricants 26 3 Discuss the need lubricants i oil for lubricants in vehicles ii grease Students should use the dipstick to check the
27. ower ii Grabbing brakes iii Brake pulling to one side iv Spongy pedal 40 3 Guide students to diagnose brake faults of vehicle and rectify Revised December 2010 Copyright reserved NVTI Testing Division NO TASK CRITICAL POINT SUB SKILLS INSTRUCTIONAL TECHNIQUES 41 0 SUSPENSION SYSTEM 41 1 The purpose and identify the types of suspension systems Sketch the layout of the rigid and independent suspension systems and state its working principle 41 2 Types of suspension systems i Rigid ii Independent Layout of Rigid and independent suspension system and working principle of i Wish bone ii Macpherson types 41 3 Guide students to examine different types of suspension system taking note of arrangement and attachment to the vehicle frame also examine the front and the rear hub bearings wear Assist students to examine an independent wheel suspension system to determine the points of wear and its effects on the steering geometry and components ii Dismantle wheel hub assembly noting special feature relating to methods of grease retention assembly and adjustment to correct tolerances iii Check wheel alignment castor camber and kingpin inclination on independent and solid beam suspension Revised December 2010 Copyright reserved NVTI Testing Division INSTRUCTIONAL NO TASK CRITICAL POINTS SUB
28. rainees for the Examination must apply to THE COMMISSIONER TESTING DIVISION NVTI HEAD OFFICE P O BOX MB 21 ACCRA ACKNOWLEDGEMENT NVTI wishes to acknowledge the preparatory material done by the team of Experts which have been incorporated into this syllabus RECOMMENDED BOOKS FOR MVM 1 The Repair of Vehicle Bodies Allan Robinson 2 Principles of Auto Body Repairing and repainting A G Deroche 3 Auto Body Repair and Refinishing John W Hogg 4 Fundamentals of Motor Vehicle Technology by V A W Hillier and E Pittuck 4th Edition Motor Vehicle Technology and Practical Work by J A Dolan Combined Volume Part 1 amp 2 i Technology for Motor Mechanic Part 1 Book 1 Tools and Materials 34 Edition by S C Mudd ii Part 2 Book 2 Vehicle amp Electrical Technology by S C Mudd 3 Edition iii Part 3 Technology for Motor Mechanics Vehicle and Electrical Technology by Revised December 2010 Copyright reserved NVTI Testing Division S C Mudd 3 4 Edition Part 4 Book 4 Vehicle Technology Diesel C I Engines By S C Mudd 3 4 Edition SCIENCE AND CALCULATIONS 8 i Motor Vehicle Science and Calculations Book 1 amp 2 By R C Champion and E C Arnold New Edition ii Motor Vehicle Science and Calculations Book 1 amp 2 By Zammit Saviour J 314 Edition 9 TECHNICAL AND ENGINEERING DRAWING i Engineering Drawing with CAD Applications by Ostrowsky and Edward Arnold 10 MOTOR VEHICLE ELECTRICAL AN
29. ters thermometers thermometer and pyrometers 12 0 PRINCIPLES OF 12 1 Differentiate between DC Simple calculations in series Assist students to know ELECTRICITY DRY AND and AC current Ohm s law and parallel circuits principles of Electricity WET CELL and solve simple problems in series and parallel circuits 13 0 MACHINES 13 1 Describe machine asa 13 2 Explain force ration 13 3 Guide students device for changing the magnitude and line of action of a force Determination of overall gear ratio of simple machine movement ratio and efficiency of a simple machine system know about simple machine and solve problems relating to motor vehicle Revised December 2010 Copyright reserved NVTI Testing Division CERTIFICATE ONE TRADE SCIENCE AND CALCULATIONS NO INSTRUCTIONAL TASK CRITICAL POINTS SUB POINTS TECHNIQUES 14 0 FRICTION 14 1 State the condition 14 2 Kinetic and static 14 3 Assist students to under which friction takes friction Advantages and know friction in relation place E g Boundary and Dry Disadvantages of friction with to motor vehicle friction special reference to motor vehicle Explanation of co efficient of friction 15 0 INTRODUCTION TO 15 1 Types of lines 15 2 Firm lines broken lines 15 3 Assist students to DRAWING construction and lettering centre lines etc construct lines 16 0 INTERPRETATION OF 16 1 The purpose and the 16 2 Uses of line diagram
30. that will best meet the needs of the trade as well as industries using professional equipments Revised December 2010 Copyright reserved NVTI Testing Division ENTRY TO THE COURSE Minimum education Must have passed JHS or SHS examination Foundation certificate However the selection of the students for the course is within the discretion of the head of the institution ELIGIBILITY FOR ENTRY TO EXAMINATION Candidates may enter for examination only as internal candidate that is those who at the time of entry to the examination are undertaking or have already completed the course at an approved establishment EXTERNAL EXAMINERS The practical work of candidates will be assessed by an external examiner appointed by the Trade Testing Commissioner EXAMINATION RESULTS AND CERTIFICATES Each candidate will receive record of performance given the grade of performance for the components Taken These are i Distinction ii Credit iii Pass iv Referred Fail Certificates would be issued to candidates who pass in all the components NOTE All Technical and Vocational trainees who aspire to take advantage of the opportunities opened to them in the educational reforms should NOTE that for a trainee to progress to certificate Two 2 a pass in Certificate One 1 is compulsory Revised December 2010 Copyright reserved NVTI Testing Division APPROVAL OF COURSE Institutions or other establishments intending to prepare t
31. ts to to include the following i Inspect and study the explain the purpose of the Battery coil ignition circuit noting coil ignition system Ignition switch their functions of Coil components in the system Distributor Condenser li Dismantle service and Spark plug reassemble the distributor Balart resistor Dwell angle iii Check and trace Advance and retard malfunctioning simple coil mechanisms ignition and rectify faults iv Study relationship between piston valve opening and distributor operation Identify any timing marks provided v Fixing of distributor to the engine 23 0 INTRODUCTION TO 23 1 Identify types of 23 2 Advantages of 23 3 Use sketches or charts ELECTRONIC IGNITION SYSTEM electronic ignition system i Inductive ii Hall effect Explain the advantages of electronic ignition system as compared to the conventional type Electronic Ignition System to i Explain the operation of electronic ignition using the system of a inductive ii hall effect Guide students to discuss the advantages of the electronic ignition system as compared to the conventional ignition system Revised December 2010 Copyright reserved NVTI Testing Division INSTRUCTIONAL NO TASK CRITICAL POINTS SUB POINTS TECHNIQUES 24 0 LUBRICATION SYSTEM 24 1 The purpose of the 24 2 Purpose of lubrication 24 3 Use sketches or chart lubrication system system and types to sh
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