Question 1
(a) Name the appropriate tool used for:
(i) Tightening main bearing journal to specified torque;
(ii) Removing chain sprocket;
(iii) Removing broken spark plug.
(b) The sketch in Fig. 1 shows the fuel system of a petrol-engine vehicle
i. Name the parts labelled: Q, R, S
ii. State the main function each of the parts labelled: R, S
iii. What drive arrangement is most suitable for the automobile shown in the sketch?
Observation
Candidates’ responses to 1(a) and 1b(i & ii) were not adequate enough. Their responses to giving the drive arrangement suitable for the automobile however, were satisfactory. The solutions to the poorly answered part of the question are given below
(i) Torque wrench or torque spanner
(ii) - Sprocket extractor
- extractor
- sprocket remover
- puller
(ii) - Tapered left-hand thread remover
- left hand thread remover
- thread remover
- tapered left-hand thread extractor
- tapered left-hand extractor
- left hand thread extractor
- left hand extractor
- left hand thread puller
- thread puller
(b)(i) Q: Carburetor or air cleaner
R: Fuel pump, mechanical fuel pump or pump
S: Fuel tank or tank
(ii)- The fuel pump (R) lifts the fuel from fuel tank and supplies same to the carburetor
or
- It transfers fuel from the tank to the carburetor or to the fuel injection system.
- The tank (S) is a storage for fuel or
- It contains the fuel used in the vehicle.