Teacher define and explain two stroke cycle operation. Students examine the working sequence.
Resources; Live engine, i.e two stroke charts.
PETROL ENGINE – FOUR STROKE CYCLE.
Teacher explain and illustrate four stroke cycle engine. Students observe the working operation of four stroke.
Resources; Live engine, charts, posters.
PETROL ENGINE – ADVANTAGES OF FOUR STROKE AND TWO STROKE
Teacher distinguish between two stroke and four stroke cycle engine. Students observe the differences between two stroke and four stroke engine.
Resources; Charts, posters on spark ignition engine (SIE)
DIESEL ENGINE—TWO STROKE CYCLE AND FOUR STROKE CYCLE.
Teacher explain and illustrate the principles of operation of two & four stroke cycle engines, emphasize on the difference between the two. Students observe the operational sequence of tow stroke & four stroke cycle. Distinguish between the layout and advantages.
Resources; Live engine of compression ignition engine (CIE). Two and four stroke.
COMPONENTS OF A TRANSMISSION UNIT (CLUTCH) – IDENTIFICATION OF PARTS AND CHARACTERISTICS OF CLUTCHES.
Teacher illustrate with sketches, types of transmission components, i.e pressure plate, disc, release bearing.
Students make sketches on types of clutches. Observe the operation. Resources; Gearbox, posters, charts.
COMPONENTS OF A TRANSMISSION UNIT (CLUTCH) CONSTRUCTION AND OPERATION OF A SINGLE PLATE CLUTCH.
Teacher list various parts in a transmission system. Students identify transmission components.
Resources; Live vehicle, clutch , gearbox, posters, charts.
COMPONENTS OF A TRANSMISSION UNIT (GEAR BOX)—OPERATION OF A SLIDING MESH GEARBOX AND REVERSE MECHANISM.
Teacher dismantle and identify parts of gearbox, illustrate and explain. Students observe the operation, and the dismantling.
Resources; Live vehicle, gearbox, posters, charts, etc
Teacher explain the effect of faulty system. Students note the effects of faulty steering system. Resources; Real objects, steering, gear box e.g whom & wheel.
STEERING SYSTEMS—ADJUSTMENT OF STEERING UNIT
Teacher demonstrate how to remove and replace steering unit. Demonstrate the adjustment of the steering unit. Students observe the removal of steering unit, observe and participate in adjustment of steering unit. Resources; Posters, charts, spanner, hammers, screw drivers.
ENGINE LUBRICATION—VISCOSITY AND VISCOSITY INDEX
Teacher demonstrates on oil viscosity. Students observe and listen attentively as the teacher demonstrates.
Differentiate grade of oil.
ENGINE LUBRICATION—OIL FILTERS & QUALITIES OF LUBRICANTS
The teacher will list quality of lubricant.
Students observe and touch oil, and feel the viscosity. Resources; Tools and equipments, oil can.
COOLING SYSTEM—AIR COOLING, WATER AND AIR COOLING SYSTEM.
Teacher guide in identifying parts of cooling system, demonstrate removal.
Students identify cooling system parts.
Resources; Radiator, fan- blade, fan belt, rubber hoses, charts.