Overhaul diesel fuel injection systems

Part 1

1. What is the testing procedure for diesel Systems as outlined by the National Environment Protection (Diesel Vehicle Emission Measure?

2. Discuss the dangers of working with diesel. In your discussion on effects of exposure and minimization strategies.

3. Outline the way the following system works:

4. Draw and label a cutaway of a glow plug.

Assessment Tasks

Perform diesel injector service and overhaul - Remove, test and refit an injector.
Include

1. Start engine and check for any abnormalities in engine noise. Vehicle is road tested prior to any repasts and any faults noted.

2. Remove rocker cover, check and adjust of necessary valve clearances.

3. Remove, inspect, test and refit glow plugs. Check glow plug continuity.

4. Compression test engine.

5. Check and adjust if necessary injection timing.

6. Remove fuel filtration unit completely and inspect for any restrictions. Replace filter if necessary.

7. Inspect and replace if necessary fuel supply Iines. These are checked for shredding and internal blockages.

8. Remove, clean, inspect, test recondition and refit injectors.

9. Air cleaner element is removed and impacted. Condition reported on and replaced if necessary.

10. Any engine abnormalities are reposted on, Eg: Worn fan belt, engine oil leaks, loose bolts, broken studs, or any other condition that may be a safety issue.

Record the process and outcome using a job card.

Part -2:

Dismantle, test and reassemble a lift pump.

Record the process and outcome using a job card.

Part -3:

Overhaul/rebuild a Bosch diesel injection pump.

Record the process and outcome using a job Card.

Diagrams for this pump.

Attachment:- assignment.rar