12 May 2024

MECHANIC MOTOR VEHICLE 1st year WEEK WISE NSQF SYLLABUS (SPILT UP)

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WEEK. NO. 18 

  1. Reference Learning Outcome :-Overhaul Engine and check functionality. (Mapped NOS: ASC/N1405)
  2. Duration :- Professional Skill 175 Hrs.; Professional Knowledge 32 Hrs.(for above learning out come)
TRADE THEORY (Professional Knowledge ) :- 
    • Engine Components: Description and Constructional feature of Cylinder head, Importance of Cylinder head design,
    • Type of Petrol and Diesel combustion chambers, Effect on size of Intake & exhaust passages, Head gaskets.
    • Importance of Turbulence
    • Valves & Valve Trains-
    • Description and Function of Engine Valves, different types, materials,
    • Type of valve operating mechanism, Importance of Valve seats, and Valve seats inserts in cylinder heads,
    • Valve stem oil seals, size of Intake valves, Valve trains, Valve- timing diagram, concept of Variable valve timing.
TRADE PRACTICAL (Professional Skills  With Indicative Hours) :- Job no. & Name of the Practical
  • 37. Overhauling of cylinder head assembly, use of service manual for clearance and other parameters, Practice on removing rocker arm assembly manifolds. (10 Hrs)
  • 38. Perform Checking valve seats & valve guide – Replacing the valve if necessary check valve overlap. Testing leaks of valve seats for leakage – Dismantle rocker shaft assembly -clean & check rocker shaft-and levers, for wear and cracks and reassemble. (10 Hrs)

WEEK. NO. 19 

  1. Reference Learning Outcome :-Overhaul Engine and check functionality. (Mapped NOS: ASC/N1405)
  2. Duration :- Professional Skill 175 Hrs.; Professional Knowledge 32 Hrs.(for above learning out come)
TRADE THEORY (Professional Knowledge ) :- 
    • Description of Camshafts &drives ,
    • Description of Overhead camshaft,
    • importance of Cam lobes,
    • Timing belts & chains,
    • Timing belts & tensioners.
TRADE PRACTICAL (Professional Skills  With Indicative Hours) :- Job no. & Name of the Practical
  • 39. Check valve springs, tappets, push rods, tappet screws and valve stem cap. (10 Hrs)
  • 40. Reassemble valve parts in sequence, refit cylinder head and manifold & rocker arm assembly, adjustable valve clearances, starting engine after adjustments. (10 Hrs)

WEEK. NO. 20 

  1. Reference Learning Outcome :-Overhaul Engine and check functionality. (Mapped NOS: ASC/N1405)
  2. Duration :- Professional Skill 175 Hrs.; Professional Knowledge 32 Hrs.(for above learning out come)
TRADE THEORY (Professional Knowledge ) :- 
    • Description & functions of different types of pistons, piston rings and piston pins and materials.
    • Used recommended clearances for the rings and its necessity precautions while fitting rings, common troubles and remedy.
    • Compression ratio.
    • Description & function of connecting rod, importance of big- end split obliquely,
    • Materials used for connecting rods big end & main bearings.
    • Shells piston pins and locking methods of piston pins.
TRADE PRACTICAL (Professional Skills  With Indicative Hours) :- Job no. & Name of the Practical
  • 41. Practice Overhauling piston and connecting rod Assembly. Use of service manual for clearance and other parameters(5 Hrs)
  • 42. Practice on removing oil sump and oil pump – clean the sump. Practice on removing the big end bearing, connecting rod with the piston. (5 Hrs)
  • 43. Practice on removing the piston rings; Dismantle the piston and connecting rod. Check the side clearance of piston rings in the piston groove & lands for wear. Check piston skirt and crown for damage and scuffing, clean oil holes. (5 Hrs)
  • 44. Measure -the piston ring close gap in the cylinder, clearance between the piston and the liner, clearance between crank pin and the connecting rod big end bearing. (5 Hrs)
  • 45. Check connecting rod for bend and twist. Assemble the piston and connecting rod assembly. (5 Hrs)

WEEK. NO. 21 & 22

  1. Reference Learning Outcome :-Overhaul Engine and check functionality. (Mapped NOS: ASC/N1405)
  2. Duration :- Professional Skill 175 Hrs.; Professional Knowledge 32 Hrs.(for above learning out come)
TRADE THEORY (Professional Knowledge ) :- 
    • Description and function of Crank shaft, camshaft,
    • Engine bearings- classification and location – materials used & composition of bearing materials-
    • Shell bearing and their advantages- special bearings material for diesel engine application bearing failure & its causes-care & maintenance.
    • Crank-shaft balancing, Firing order of the engine.
TRADE PRACTICAL (Professional Skills  With Indicative Hours) :- Job no. & Name of the Practical
  • 46. Carryout Overhauling of crankshaft by referring service manual for clearance and other parameters. (15 Hrs)
  • 47. Practice on removing damper pulley, timing gear/timing chain, flywheel, main bearing caps, bearing shells and crankshaft from engine checking oil retainer and thrust surfaces for wear.(15 Hrs)
  • 48. Measure crank shaft journal for wear, taper and ovality, Checking crankshaft for fillet radii, bend & twist. (10 Hrs)