TRACTOR MECHANIC WEEK WISE NSQF SYLLABUS (SPILT UP)

WEEK. NO. 27

1. Reference Learning Outcome :- Overhaul Clutch and Gearbox of Tractor in a workshop. (NOS:AGR/N1129)
2. Duration :- Professional Skill 28 Hrs.; Professional Knowledge 05 Hrs. (for above learning out come)

TRADE THEORY (Professional Knowledge ) :- 

• • Clutch: -types, construction and function.
  • Components of clutch -driver & driven plates, torsion spring, cushion springs, operating fingers, clutch shaft, Slave cylinder & oil seal. Clutch release bearing & linkages.
  • Manual transmissions- Function, description, types and their application.
  • Gearbox layout.
  • Components of tractor gear box.
  • Principle of epicyclical gear box.
  • Necessity of torque convertor, need of 4 x 4-wheel drive / Front wheel drive, Low & high gear ratio, universal joint and propeller shaft.

TRADE PRACTICAL (Professional Skills  With Indicative Hours) :- Job no. & Name of the Practical

• 70. Dismantle clutch assembly. (4 hrs.)
• 71. Inspect the parts of clutch. (2 hrs.)
• 72. Relining of clutch plate & assemble. (3 hrs.)
• 73. Coupling the clutch with flywheel & join the engine with gear box. (5 hrs.)
• 74. Adjust clutch pedal free play. Dismantle gear box of a tractor & inspect the parts. (5 hrs.)
• 75. Assemble the gear box. (5 hrs.)
• 76. Overhauling Transfer case and auxiliary gear box. (4 hrs.)

WEEK. NO. 28

1. Reference Learning Outcome :- Overhaul Differential and PTO Unit of Tractor in the workshop.
2. Duration :- Professional Skill 28 Hrs.; Professional Knowledge 07 Hrs. (for above learning out come)

TRADE THEORY (Professional Knowledge ) :- 

• • 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.
  • Types of front & rear axles. Common trouble and their remedies, care and maintenance.

TRADE PRACTICAL (Professional Skills  With Indicative Hours) :- Job no. & Name of the Practical

• 77. Overhauling of differential. (6 hrs.)
• 78. Servicing of reduction gear, rear axle wheel hub. (11 hrs.)
• 79. Servicing of PTO (Power Take Off). Measure rpm of PTO shaft & speed of belt pulley. (11 hrs.)

WEEK. NO. 29 & 30

1. Reference Learning Outcome :-Overhaul Steering System of Tractor in the workshop. (NOS:AGR/N1129)
2. Duration :- Professional Skill 80 Hrs.; Professional Knowledge 15 Hrs. (for above learning out come)

TRADE THEORY (Professional Knowledge ) :- 

• • Steering 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.
  • Description and mechanism of foot steerage pedal as incorporated in tractors. Description, working and principle of hydraulic steering system.
  • Different parts such as pump, distributor valves, pipe line and hoses etc.
  • Development of mechanical framing.
  • Use of Power tiller, Tractor & Bulldozer, Chassis frame of tractor

TRADE PRACTICAL (Professional Skills  With Indicative Hours) :- Job no. & Name of the Practical

• 80. Checking, Layout of Mechanical steering system. Checking/ Inspection of Steering linkage and necessary repair. (6 hrs.)
• 81. Remove steering wheel. Overhauling of steering gear box of tractor. (5 hrs.)
• 82. Remove front axle and spindle hub and steering linkage. (6 hrs.)
• 83. Reassembling steering assembly and Test for correct function. (6 hrs.)
• 84. Checking, inspect layout of different parts of Hydraulic steering system. (11 hrs.)
• 85. Practice on visual Inspection of chassis frame for crack, bent and twists. (6 hrs.)
• 86. Overhauling and Inspection of shackle, front & rear suspension. (10 hrs.)
• 87. Lubricating a suspension system. (6 hrs.)

WEEK. NO. 31  

1. Reference Learning Outcome :-Carryout Repair of Wheels and Tyres of Tractor in the Workshop. (NOS:AGR/N1129)
2. Duration :- Professional Skill 28 Hrs.; Professional Knowledge 05 Hrs. (for above learning out come)

TRADE THEORY (Professional Knowledge ) :- 

• • Wheels & Tyres- Description, construction and function of Wheel.
  • Rim sizes.
  • Types & sizes of tyres.
  • Solid, pneumatic & Radial.
  • Ply rating. Tyre materials, Tyre information, Tyre tread designs, Tyre ratings for temperature & traction.
  • Importance of in-Flatting tyres to correct pressure.
  • Repair and maintenance of tyres and tubes.
  • Storage of tyres.
  • Descriptions Tire wear Patterns and causes Nitrogen vs atmospheric air in tyres.

TRADE PRACTICAL (Professional Skills  With Indicative Hours) :- Job no. & Name of the Practical

• 88. Remove wheels from tractor. (4 hrs.)
• 89. Dismantle wheel for checking rims, tyres for wear and tubes for leaks. (5 hrs.)
• 90. Repairing, de-rusting, painting. (5 hrs.)
• 91. Fitting of tyres and tubes on rim & inflate to correct pressure. (5 hrs.)
• 92. Balancing of Tractor wheels. Practice of tyre rotation. Fitting wheels on tractors. Tightening of wheel in correct sequence. (5 hrs.)
• 93. Checking & adjusting tire pressure by use of air or by Nitrogen. (4 hrs.)