PRACTICE EXERCISE FOR LESSON 2
You have just finished reading the instructional material for lesson 2. This lesson covered how to
troubleshoot the M3A4 smoke generator to correct the most common problems. We discussed
troubleshooting when the engine will not start, when there is little or no smoke production, and when the
engine overheats. It is now time to check your understanding of the lesson. This is done by completing
the practice exercise below. All of the questions are multiple-choice and are intended to measure your
understanding of the procedures used in performing the task. There is only one correct answer to each
question. Try to answer all of the questions without referring to the lesson material.
When you have completed all of the questions, turn the page and check your answers against the
correct responses. Each correct response is referenced to specific portions of the lesson material so that
you can review any questions you have missed or do not understand. When you have completed this
practice exercise, you should review all of the subcourse material before starting the examination.
1. Rockerarms can be assisted with what?
Engine head wrench.
2. What will the generator operator do when all the troubleshooting steps fail to increase smoke
Obtain a new generator.
Repeat all the steps.
Try something else.
Notify the supervisor.
3. While you are operating the M3A4 smoke generator, your generator starts to produce low white
smoke output. What is the first corrective action you should perform?
a. Ensure fog oil strainer in the fog oil inlet hose is not clogged.
b. Ensure pressurizing disk is not stuck in air check valve assembly.
c. Ensure float bowl is lowered 2 inches below head assembly.
4. While you are operating the M3A4 smoke generator, the engine overheats. If the engine head
assembly is hot, what is the first corrective action you should perform?
a. Tighten engine head assembly with your wrench.
b. Increase fuel flow to the engine head by raising the float bowl.
c. Check fog oil inlet hose for clogged fog oil strainer.