B.E / B.Tech.
PRACTICAL END SEMESTER EXAMINATIONS
Seventh Semester
AT8712 VEHICLE MAINTENANCE LABORATORY
(Regulations 2017)
Time : 3 Hours Answer any one Question Max. Marks 100
Aim /Tools Tabulation/ Calculation Viva-Voce Record Total
required/Procedure Drawing & Results
30 30 20 10 10 100
1. a) Sketch the layout of a carriage to carry out repair, service and maintenance work for a fleet of
200 diesel trucks and passenger buses. List out maintenance work to be carried out in a diesel
vehicles.
b) Do the adjustment of clutch pedal play, steering wheel play, service brake and hand brake
lever.
2. Dismantle and assemble the carburetor and tune the four strokes multi cylinder petrol engine and
clean the air filter.
3. a) How do you prepare the different statements /records required for the repair and maintenance
work for a petrol vehicle?
b) Do the major and minor tune up works in the given petrol engine.
4. a) Calculate the ovality and taper of the cylinder in the single cylinder two wheeler engine. Also
check the necessity and suitability cylinder for reboring.
b) Set the re boring tool and re bore the given cylinder. Also suggest the required piston size.
5. Do the valve grinding and valve lapping in inlet and exhaust valves of the given two wheeler
engine and check for valve leakage.
6. Set the valve face angle and valve seat angle to 450 and check for valve leakage in the given two
wheeler engine.
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7. What is the necessity of FIP calibration? Calibrate the given six cylinder fuel injection pump.
8. a) Check the nozzle opening pressure of all four fuel injection nozzles in the given four cylinder
engine.
b) Calibrate the given four cylinder fuel injection pump.
9. a) What is the significance of setting the camber and caster angles?
b) Check the camber and caster in all four wheels of a passenger car.
10. a) Why wheel alignment factors have to be checked in a vehicle? What are the recommended
values for wheel alignment factors for medium size passenger car?
b) Check the kingpin inclination angle, toe-in and toe-out of a given car.
11. Carry out the front brake adjustment and brake bleeding in the truck.
12. Do the simple tinkering and soldering works for a car body panels.
13. Carry out the maintenance work of door lock mechanism and window glass actuating mechanism.
Sketch and explain its working principle.
14. Carry out the specific gravity test and cadmium plate test in the given battery.
15. Perform the following operations :
i. Adjust the head light beam of given two wheeled vehicle of the given
ii. Wheel bearing tightening and adjustment
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