Reference Learning Outcome :- Overhaul & service Diesel Engine, its parts and check functionality. (Mapped NOS: ASC/N9403)
Duration :- Professional Skill 160 Hrs.; Professional Knowledge 25 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
49. Perform Overhauling piston and connecting rod assembly. Use of service manual for clearance and other parameters. (05 hrs)
50. Perform Practice on removing oil sump and oil pump – clean the sump. (04 hrs)
51. Perform removing the big end bearing, connecting rod with the piston. (04 hrs)
52. Perform 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. (05 hrs)
53. 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. (03 hrs)
54. Check connecting rod for bend and twist. Assemble the piston and connecting rod assembly. (04 hrs)
WEEK. NO. 23
Reference Learning Outcome :- Overhaul & service Diesel Engine, its parts and check functionality. (Mapped NOS: ASC/N9403)
Duration :- Professional Skill 160 Hrs.; Professional Knowledge 25 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
55. Perform Overhauling of crankshaft, Use of servicemanual for clearance and other parameters(05hrs)
56. Perform removing damper pulley,timing gear/timing chain,flywheel,main bearing caps,bearing shells and crankshaft from engine(05hrs)
58. Measure crank shaft journal forwear,taper and ovality.(05hrs)
59. Demonstrate crankshaft for fillet radii, bend& twist.(05hrs)
WEEK. NO. 24
Reference Learning Outcome :- Overhaul & service Diesel Engine, its parts and check functionality. (Mapped NOS: ASC/N9403)
Duration :- Professional Skill 160 Hrs.; Professional Knowledge 25 Hrs.(for above learning out come)
TRADE THEORY (Professional Knowledge ) :-
– Description and function of the fly wheel and vibration damper.
– Crank case & oil pump, gears timing mark, Chain sprockets, chain tensioner etc.
– Function of clutch & coupling units attached to flywheel.
TRADE PRACTICAL (Professional Skills With Indicative Hours) :- Job no. & Name of the Practical
60. Inspect flywheel and mounting flanges, spigotand bearing.(05hrs)
61. Check vibration damper for defect.(02hrs)
62. Performre moving camshaft from engine block, 8Check for bend & twist of camshaft. Inspection of camlobe,camshaft journals and bearings andmeasure cam lobe lift. (05 hrs)
63. Fixing bearing inserts in cylinder block & cap check nipand spread clearance & oil holes & locating lugs fix crank shaft on block-torque bolts-check end play remove shaft-check `seating, repeat similarly for connecting rod and Checkseatingandrefit.(08hrs)
WEEK. NO. 25
Reference Learning Outcome :- Overhaul & service Diesel Engine, its parts and check functionality. (Mapped NOS: ASC/N9403)
Duration :- Professional Skill 160 Hrs.; Professional Knowledge 25 Hrs.(for above learning out come)
TRADE THEORY (Professional Knowledge ) :-
– Description of Cylinder block,
– Cylinder block construction,
TRADE PRACTICAL (Professional Skills With Indicative Hours) :- Job no. & Name of the Practical
64. Perform cleaning and checking of cylinder blocks.(10 hrs)
65. Surface for any crack,flatness measure cylinder bore for taper & ovality, clean oil gallery pass age and oil pipeline. (15hrs)