The teacher explains and carries out chassis alignment process, explain the procedures of joining chassis, identifies the procedures of supporting various components.
The students will observe and practice the procedures involved in alignment process, examine the methods of supporting/joining chassis, examine and observe method of supporting various components.
Resources; live vehicle, complete vehicle, chassis, tool box, charts, poster, etc.
2
ENGINE—DEFINITION AND TYPES
We have turbine engine, wankel rotary engine.
The teacher will define, list and explain types of engine, firing order. He will explain the operational sequence in gas turbine and wankel engine.
The students will listen to the definitions, observe the procedures involved in determining firing order, observe the operational sequence in gas turbine and wankel engine.
Resources; live vehicle, posters, and charts.
3
ENGINE--- COMBUSTION CHAMBERS, MAINTENANCE, OVERHAULING AND DECARBONIZATION
The teacher identifies types of combustion chambers, types of engine firing order, and explain the term decarbonization.
The students identify the types of combustion chambers, visit a medium workshop, observe the firing order.
Resources; live vehicle, fluid fly wheel, gear box, propeller shaft.
The teacher will explain the operation and constructional details of a fluid fly wheel. He will also explain the principle of synchronization and gearbox and propeller shaft.
The students will make free hand sketches and label fluid fly wheel, propeller shaft, types of universal joint, gearbox.
Resources; live vehicle, fluid fly wheel, gearbox, propeller shaft.
5
FLUID FLY WHEEL AND TRANSMISSION COMPONENTS—UNIVERSAL JOINTS, REAR AXLE.
He teacher will dismantle, inspect and reassemble a rear axle. He will test the propeller shaft for straightness (using dial indication and vee-block). He will reassemble component parts of the gear box. The students will identify and examine types of rear axle assembly; semi- floating, three- quarter floating, fully floating. Resources; live vehicle, rear axle, tools, posters, charts, universal joints.
6
SUSPENSION SYSTEM MAINTENANCE—MAINTENANCE OF SUSPENSION SYSTEM.
The teacher will explain the need for suspension maintenance, carry out maintenance on suspension.
The students will participate in the maintenance, and also state the need for maintenance.
Resources; real objects, suspension system, spanner, screw drivers, hammers, charts.
7
STEERING SYSTEMS—POWER ASSISTED STEERING
The teacher will sketch and explain the principles of operation of the power assisted steering.
The students will observe the teacher’s demonstration, and practice the sketches of steering geometry.
Resources; power assisted steering unit, types of suspension, charts, posters etc.
8
STEERING SYSTEMS—
-Principles of operation and construction of a steering system.
-Principle of operation of ackerman linkage.
-Camber angle
-Castor angle
-Toe-in and toe-out
-Kingpin inclination.
-Under-steer and over-steer.
The teacher will explain with sketches, the principle of steering geometry.
The students will observe and explain the principle of operation of manual steering and power assisted steering.
Resources; power assisted steering unit, manual steering, types of suspension, charts, posters, toolbox etc.
The teacher will define additives, explain types of additives, state the reason for additives, demonstrate the reason for grease gum, carry out flushing of a radiator.
The students will carry out radiator flushing, observe and demonstrate operation of grease gum.
Resources; radiator, grease gum, charts, posters, etc.
10
FUEL PUMP AND MUFLER DESIGN—
Functions of fuel pump.
Advantages and disadvantages of mechanical and electrical fuel pump.
The teacher will display specimen of types of fuel pump, dismantle and explain the parts in a fuel pump, emphasize the importance of each part.
The students will examine specimen of fuel pump types, carry out simple test of fuel delivery.
Resources; live vehicle, types of fuel pump, charts, etc
The teacher will display specimen of silencer unit.
The students will examine various types of muffler.
Resources; live vehicle, silencers, muffler, charts.
12
ANTI-LOCK BRAKING SYSTEM (ABS)
-Functions of anti-lock braking system.
-Advantages and disadvantages of anti-lock braking system.
The teacher will explain the importance and the principles of operation of anti-lock braking system, He will demonstrate ABS, and also list the components of ABS system.
The students will examine and observe teachers demonstration, and also identify various ABS components.
Resources; live vehicle with ABS system.
13
REVISION AND EXAMINATION
AUTO MECHANICS WORK
SS 3 SECOND TERM
WEEK
TOPIC/CONTENT
ACTIVITIES
1
BRAKING SYSTEM FAULTS TRACING.
-Types of brake faults.
-Remedy of faulty brakes.
The teacher will explain the meaning of brake faults, identify various brake faults, demonstrates the effect of faulty brake in a vehicle, carry out maintenance on faulty brakes.
The students will participate in class workshop activities, observe teacher’s demonstration, and practice the techniques, observe various faults as identified, participate in the maintenance of faulty brakes.
Resources; complete brakes, tools and equipments, brake fluid, charts, and posters.
2
WHEELS AND TYRE BALANCING—
-Light alloy RIMS
-Pressed steel disc
-Wire wheels
-Interchanging tyres
-Types of tyre balancing.
The teacher will emphasize on the importance of wheel and tyre balancing, display types and RIMS for identification, carry out wheel balancing and alignment.
The students listen attentively and observe types of RIMS, observe the interchanging of tyre, and the balancing of alignment.
Resources; live vehicle, wheel balancing, wheel alignment gauge, balancing weight, wire brush, posters, charts etc.
3
ENTERPRISE—
Types of enterprise
Advantages& disadvantages of different types of enterprise in automobile, e.g
Vulcanizing
Suspension
Brake
Steering
The teacher lists and identifies types of business organization, he also emphasizes the objectives of auto mobile business organization.
The students listen to the teacher attentively and participate in class discussion.
Resources; visits to different types of automobile business organization.
