Brief history, introduction to automobile, layout of an automobile, Role and requirement of a chassis frame. Chassis – light, medium and heavy duty vehicle chassis, ladder chassis, integral body. Types of bodies, coach built convertibles. Body accessories, bumpers.

Steering - Principle, steering linkage layouts for rigid axle suspension and independent suspension systems, reversible and irreversible steering. Steering gearbox – Purpose, types. Steering geometry, wheel alignment and balancing, centre point steering. Power steering –Principle, types.

Clutch-types and construction, gear boxes- manual and automatic, gear shift mechanisms, Over drive, transfer box, fluid flywheel, torque converter, propeller shaft, slip joints, universal joints. Construction - Differential, rear axle.

Suspension systems – Rigid axle suspension and independent suspension systems. Suspension springs – Leaf springs, coil springs, torsion bar springs, air springs, rubber springs, hydro elastic springs. Linked suspension system and air suspension system. Shock absorbers – Role, Types - Telescopic shock absorber and hydraulic shock absorber.

Braking system - Need, principle, characteristics of good braking system. Wheel locking and stopping distance. Brakes – Drum brakes, disc brakes. Types of brake actuating systems – Mechanical brakes, hydraulic brakes, power brakes, servo brakes. Wheels and Rims. Tyres - Types and construction