AEC1-L2.1

Daily checks and routine maintenance

Most breakdowns are prevented by simple, regular checks and servicing, so the routine care of the engine is time well spent. This lesson covers the daily checks before starting and the routine maintenance that keeps a diesel reliable.

Checks before starting and after running

Pre-start engine checks

  1. Water — check the fresh-water coolant level and confirm the raw-water seacock is open.
  2. Oil — check the engine oil and the gearbox oil on their dipsticks.
  3. Belts — check the drive belt tension and condition.
  4. Look — look around the engine for leaks of fuel, oil or water, and for anything loose.
  5. Exhaust — after starting, confirm cooling water is discharging at the exhaust within a few seconds.

Routine maintenance

  • Change the engine oil and the oil filter at the maker's intervals — old oil loses its protection.
  • Keep the fuel clean: drain water and sediment from the pre-filter/water trap and change the fuel filters regularly.
  • Carry and know how to fit the common spares: impeller, drive belts, fuel and oil filters, and oil.
  • Keep the raw-water strainer clear and the seacock accessible, and check the anodes.

WARNING — Old oil and dirty fuel cause most failures Oil that is overdue a change has lost its protective additives, and dirty or watered fuel starves and damages the engine. Servicing oil, filters and the water trap on schedule prevents most breakdowns.

TIP — A quick look prevents a long tow A one-minute look around the engine before starting — for leaks, loose fittings and belt condition — catches problems in harbour that would otherwise strand you at sea.

Practice questions

5 questions
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Shortly after starting, you should confirm that: (a) The oil pressure light stays on (b) Cooling water is flowing out of the exhaust (c) The fuel tank is full (d) The alarm is disconnected

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Engine oil and its filter should be changed: (a) Never (b) At the maker's intervals, because old oil loses its protection (c) Only when the engine fails (d) Once in the engine's life

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Water and sediment are removed from the fuel by: (a) Adding more fuel (b) Draining the water-separating pre-filter and changing filters (c) Running the engine hard (d) Ignoring it

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A useful spare to carry and know how to fit is the: (a) Spare crankshaft (b) Raw-water impeller (c) Spare cylinder block (d) New engine

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A quick look around the engine before starting checks for: (a) The weather (b) Leaks, loose fittings and belt condition (c) The tide (d) The radio

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