2018-02-14
233
Exercise 1. Read and memorize using a dictionary:
| belt-driven; camshaft; chain; compression stroke; exhaust stroke; gear; intake stroke; lubrication; power stroke; pushrod; |
Exercise 2. Answer the questions:
1) What is one of the most important components in any engine?
2) Where the camshaft is either chain or gear driven off the crankshaft?
3) Why can cam-related problems occur?
4) When does the engine quit?
5) When can cam failures occur?
Exercise 3. Match the left part with the right:
| 1. The camshaft is either chain or | a) a retarding effect on cam timing. |
| 2. The added slack in the chain has | b) replacing OHC timing belts at specific mileage intervals. |
| 3. If the belt snaps, the cam | c) gear driven off the crankshaft. |
| 4. To minimize the risk of such damage, most vehicle manufacturers recommend | d) stops turning and the engine quits. |
Exercise 4. Open brackets choosing the right words:
On cold mornings when the oil is (thin/thick), it can take quite a few seconds for adequate oil pressure to reach the cam. That is why most vehicle manufacturers (recommend/deny) using 5W-30 oil rather than 10W-30 or 10W-40 for (cold/hot) weather driving.
