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)
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)
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)
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)