ITI's which provides courses for Mechanic Tractor

Sem. I

Sr. No.

Subjects of Study

Trade Practical

Trade Theory

1

Familiarisation with institute, Job opportunities in the automobile sector, Machinery used in Trade. Types of work done by the students in the shop floor.

Admission & introduction to the trade

2

Practical related to Safety and Health, Importance of maintenance and cleanliness of Workshop.

Occupational Safety & Health

3

Practice using all marking aids, like steel rule with spring calipers, dividers, scriber, punches, Chisel etc., Layout a work piece- for line, circle, arcs and circles. 

Hand & Power Tools

4

Measuring practice on Cam height, Camshaft Journal dia, crankshaft journal dia, Valve stem dia, piston diameter, and piston pin dia with outside Micrometers.

Systems of measurement, Description, care & use of - Micrometers- Outside and depth mirometer, Micrometer adjustments, Vernier calipers, Telescope gauges, Dial bore gauges, Dial indicators, straightedge, feeler gauge, thread pitch gauge, vacuum gauge, tire pressure gauge.

5

Practice on General cleaning, checking and use of nut, bolts, & studs etc.,

Fasteners- Study of different types of screws, nuts, studs & bolts, locking devices, Such as lock nuts, cotter, split pins, keys, circlips, lock rings, lock washers and locating where they are used.

6

Practice on Marking and Drilling clear and Blind Holes, Sharpening of Twist Drills Safety precautions to be observed while using a drilling machine. Practice on Tapping a Clear and Blind Hole, Selection of tape drill Size, use of Lubrication, Use of stud extractor

Drilling machine - Description and study of Bench type Drilling machine, Portable electrical Drilling machine, drill holding devices, Work Holding devices, Drill bits.

7

Practice on making Rectangular Tray. Pipe bending, Fitting nipples unions in pipes. Soldering and Brazing of Pipes.

Sheet metal - State the various common metal Sheets used in Sheet Metal shop Sheet metal operations - Shearing, bending, Drawing, Squeezing Sheet metal joints - Hem & Seam Joints Fastening Methods - Riveting, soldering, Brazing.

8

Practice in joining wires using soldering Iron, Construction of simple electrical circuits, Measuring of current, voltage and resistance using digital multi-meter, practice continuity test for fuses, jumper wires, fusible links, and circuit breakers. 

Basic electricity, Electricity principles, Ground connections, Ohm's law, Voltage, Current, Resistance, Power, Energy.

9

Diagnose series, parallel, series parallel circuits using Ohm’s law, Check electrical circuit with a test lamp, perform voltage drop test in circuits using multi-meter

Fuses & circuit breakers, Ballast resistor, Stripping wire insulation, cable colour codes and sizes, Resistors in Series circuits , Parallel circuits and Series-parallel circuits, Electrostatic effects, Capacitors and its applications, Capacitors in series and parallel.

10

Cleaning and topping up of a lead Acid battery, Testing battery with hydrometer, Connecting battery to a charger for battery charging, Inspecting & testing a battery after charging, Measure and Diagnose the cause(s) of excessive Key-off battery drain (parasitic draw) and do corrective action.

Description of Chemical effects, Batteries & cells, Lead acid batteries & Stay Maintenance Free (SMF) batteries, Magnetic effects, Heating effects, Thermo-electric energy, Thermisters, Thermo couples, Electrochemical energy, Photovoltaic energy, Piezo-electric energy, Electromagnetic induction, Relays, Solenoids, Primary & Secondary windings, Transformers, stator and rotor coils.

11

Identify and test power and signal connectors for continuity, Identify and test different type of Diodes, NPN & PNP Transistors for its functionality, Construct and test simple logic circuits Or, AND & NOT and Logic gates using switches.

Basic electronics: Description of Semi conductors, Solid state devices- Diodes, Transistors, Thyristors, Uni Junction Transistors (UJT), Metal Oxide Field Effect Transistors (MOSFETs), Logic gates-OR, AND & NOT and Logic gates using switches.

12

Practice to make straight beads and Butt, Lap & T joints Manual Metal Arc Welding.

Introduction to welding and Heat Treatment

13

Practice on Liquid penetrates testing method and Magnetic particle testing method. Identification of Hydraulic and pneumatic components used in vehicle

Non-destructive Testing Methods- Importance of Non-Destructive Testing In Automotive Industry, Definition of NDT, Liquid penetrate and Magnetic particle testing method – Portable Yoke method

14

Identification of different type of Vehicle. Demonstration of vehicle specification data; Identification of vehicle information Number (VIN).

Auto Industry - History, leading manufacturers, development in automobile industry, trends, new product. Brief about Ministry of Road transport & Highways, The Automotive Research Association of India (ARAI), National Automotive Testing and R&D Infrastructure Project (NATRIP), & Automobile Association

Sem. II

Trade Practical

Trade Theory

1

Demonstration of tractor specification data; Identification of different major assemblies of tractor and Cleaning of tractors, oil greasing and lubricating all moving parts of tractor. Practice on starting and stopping of tractor engine. 

Tractor Industry in India - leading manufacturers, development in Tractor industry, trends, new product. Study of tractors, dozers & their major assemblies, and different make (indigenous). Constructional differences between tractor and dozers and their merits.

2

Dismantling of tractor engine as per procedure & Inspection of components for dimension and wear.

Engine Basics: Classification of engines, Principle & working of 2 & 4-stroke diesel engine (Compression ignition Engine (C.I) ), Principle of Spark Ignition Engine (SI), differentiate between 2-stroke and 4 stroke, C.I engine and S.I Engine, Direct injection and Indirect injection.

3

Remove cylinder head from engine. Overhauling of cylinder head assembly with use of service manual for clearance and other parameters

Engine Components – working principle & construction of cylinder heads, types of combustion chambers.

4

Cylinder block overhaul. Measurement of cylinder liner & crankshaft for ovality and taperness. Overhauling piston and connecting rod assembly with use of service manual for clearance and other parameters

Description of Cylinder block, Cylinder block construction, types of cylinder blocks & cylinder liners.

5

Practice on removing the big end bearing, connecting rod with the piston

Description & function of connecting rod, importance of big-end split obliquely, Materials used for connecting rods big end & main bearings.

6

Check connecting rod for bend and twist. Setting of Connecting rod big end & main bearing.

Description of crankshaft & Camshafts. Types of their drives. Description of Overhead camshaft, importance of Cam lobes.

7

Checking cooling system for overheating / under-cooling. Dismantling, cleaning, assembling & testing of water pumps, reverse flushing the system.

Cooling systems:- Purpose, types, Heat transfer method, effect of boiling point & pressure, coolant properties, preparation and recommended change of interval, use of anti-freezer.

8

Identification of lubrication oil flow circuit in an engine.

Lubrication system: - purposes & characteristics of oil, type of lubricants, grade as per SAE, & their application, oil additives, type of lubrication system.

9

Servicing of air cleaner (Oil bath) Checking & changing an air filter, Dismantling & assembling of turbocharger, check for axial clearance as per service manual.

Intake & exhaust systems – Description of Diesel induction & Exhaust systems. Description & function of air compressor, exhauster, Super charger, Intercoolers, turbo charger, variable turbo charger mechanism

10

Repair to a tractor carburettors – adjusting float level and slow speed adjustments – study

Carburettor operation-Carburetion, Carburettor system components, Carburettor systems, Metering jets, Accelerating, Carburettor barrels Diesel Fuel Systems Diesel fuel characteristics, concept of Quiet diesel technology & Clean diesel technology, Fuel feed system used in Tractor’s description and layout.

11

Dismantle clutch assembly. Inspect the parts of clutch. Relining of clutch plate & assemble.

Clutch: types, construction and function. Components of clutch -driver & driven plates, torsion spring, cushion springs, operating fingers, clutch shaft, Slave cylinder & oil seal.

12

Overhauling of differential. Servicing of reduction gear, rear axle wheel hub. Servicing of PTO (Power Take Off).

Final Drive & Drive Shafts Differential carriers double reduction gearing, differential lock, crown wheel and pinion adjustments, function and types of power take off (PTO) mechanism.

13

Checking, Layout of Mechanical steering system. Checking/ Inspection of Steering linkage and necessary repair

Steering & Suspension Systems Function and types of steering system. Description, construction and function of mechanical steering system steering wheel, steering gear box, tie-rod, arms link, ball and socket joints etc. their movement and adjustment.

14

Remove wheels from tractor. Dismantle wheel for checking rims, tyres for wear and tubes for leaks. Repairing, derusting, painting

Wheels & Tyres- Description, construction and function of Wheel. Rim sizes. Types & sizes of tyres. Solid, pneumatic & Radial. Ply rating

15

Overhauling brakes including cleaning and inspection of all components, relining shoes, setting and actuating shoe clearance. Inspection spring of both shoe and lever.

Braking Systems - Braking fundamentals Principles of braking, Drum & disc brakes, Lever/mechanical advantage, Hydraulic pressure & force, Brake fade.

16

Overhauling power tiller transmission system includes main clutches, steering clutch/brakes mechanism-gear box and wheel hub testing for field operation without implements and with implements.

Description, working principle & use of power tiller (two wheel tractor) power unit. Method of power transmission to wheel from engine.

17

Checking implements such as ploughs harrows, cultivators, seed drills, tractor trailer, & P.T.O. units etc. For serviceability before use. Lubricate them as required.

Tractor equipment: Description, function of harrows, cultivators, seed drills & tractor trailer. Hitching of equipment. Danger in overloading & incorrect field operation.

18

Practice on removing alternator from vehicle dismantling, cleaning checking for defects, assembling and testing for motoring action of alternator & fitting to vehicles. Practice on removing starter motor vehicle and overhauling the starter motor, testing of starter motor. Servicing storage batteries, Tracing lighting circuit fault rectification

Tractor Electrical Maintenance: Lighting arrangement in tractors (As applicable). Description of charging circuit. Operation of alternator, regulator unit ignition warning lamp troubles and remedy in charging system. Fault finding in electrical system. Description of starter motor circuit, common troubles and remedy in starter circuit. Description of lighting circuit. Charging & discharging of lead acid battery.

Project Work