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Q1— Section header —
1.1FIGURE1 shows a suspension system used on a truck. Label items ( \your ANSWER BOOK. FIGURE 1 (6\
1.2List THREE advantages of the suspension system shown in FIGURE 1 (3\
1.3Give THREE functions of hydraulic dampers (3\
1.4List THREE reasons for excessive tyre wear on a heavy motor vehicle (3\
1.5Indicate whether the following statements are TRUE or FALSE. Choose the answer and write only 'true' or 'false' next to the question number (1.5.1
1.5.5\ the ANSWER BOOK.
1.5.1The input shaft gear is in constant mesh with the cluster gear.
1.5.2During gear selection the synchroniser brass ring is moved over a conical surface towards the dog teeth of the selected gear.
1.5.3Direct power flow does not occur via the cluster gear.
1.5.4The reverse idler gear oes not change the direction of rotation
1.5.520
Q2— Section header —
2.1FIGURE 2 shows a brake master cylinder. Label items \your ANSWER BOOK. FIGURE 2
2.2Explain the operation of the master cylinder when brakes are applied (5\
2.3List FIVE good characteristics of brake fluid. (5
2.4Give FOUR advantages of disc brakes (4 [20]20
Q3— Section header —
3.1FIGURE 3 shows a rear differential assembly Label items (A \your ANSWER BOOK.
3.2State TWO functions of a final drive unit. (2\
3.3Name FIVE types of final drive gears used in the rear differential assembly (5
3.4Give ONE disadvantage of the conventional rear differential assembly (1\
3.5Choose a description from COLUMN B that matches a term in COLUMN A. Write only the letter (A G\next to the question number (3.5.1
3.5.6\in the ANSWER BOOK. COLUMN A COLUMN B
3.5.6Locking gearbox mechanism Interlocking mechanism Helical gear Gears grating when being selected Reverse idler gear
Q4— Section header —
4.1State THREE functions of a good steering system (3
4.2Give THREE reasons why correct wheel alignment is importan t. (3 4.
4.3.1 Static balance (2\
4.3.2 Dynamic balance (2\ (11 40192\ T440
4.4Various options are given as possible answers to the following questions. Choose the answer and write only the letter (A D\ next to the question number
4.4.1
4.4.10\in the ANSWER BOOK.
4.4.1 A diesel injector pump is injectors. transformers. transmission.
4.4.2 vacuum accelerator converter
4.4.3 exhaust generally indicates too much fuel being injected into the engine. Green Blue
4.4.4 Speed variation of a universal joint is the greatest when the shafts 10
4.4.5 The type of axle from which the axle shaft can be removed without removing the wheel
4.4.6 axle steering dead
4.4.7 70 C to 100
4.4
4.4.9 When the slip angle is greater at the rear than at the front the versteer
4.4.10 The primary purpose of a shock absorber Limit
Q5— Section header —
5.1FIGURE 4 shows the layout of a diesel fuel sy stem. Label items (A \your ANSWER BOOK. FIGURE 4
5.2Explain the operation of item in FIGURE 4 (5\
5.3State TWO functions of item in FIGURE 4 (2\
5.4List THREE functions of copper washer situated between the injector and the cylinder head. (3\
5.5Give TWO possible causes of the following injector faults:
5.5.1Excessive leak off
5.5.2Injector nozzle blew off. (2 2\ (4\ [20] TOTAL: 10020