Exam 5: Cleaning the Engine

How can a metal be tested to see if it is ferrous or nonferrous?

Briefly explain why pressure washing and steam cleaning have become grease removal methods of the past due?

The inside of a dirty engine can harbor hazardous waste.

What are two types of materials that thermal cleaning removes that other cleaning methods do not?

Technician A says hazardous waste laws regulating solvent disposal do not apply to water-based solvents. Technician B says Stoddard solvent is usually recycled. Who is correct?

Be sure to _____ machined areas of ferrous metals after hot-tanking.

An overhead cam (OHC) head has oil galleries. This makes it impractical to clean these heads with a glass bead _____.

Technician A says glass bead blasting is very effective in removing carbon. Technician B says bead or shot may be used to improve the strength of parts. Who is right?

A special wire wheel called an _____ wire wheel is available for high rpm use.

Glass beads are safe to use for cleaning because if they get into the oil they will not cause any damage.

Lubricate all ferrous parts to prevent rust following hot-tank cleaning. True or false?

Two technicians are discussing cleaning solvents. Technician A says that it is not necessary to use gloves with petroleum-based solvents. Technician B says that most newer cleaning solvents are chlorinated. Who is right?

Remove all oil gallery plugs and clean oil galleries with a brush following hot-tank cleaning. True or false?

Technician A says that a bake oven removes rust. Technician B says that a bake oven removes scale. Who is right?

The best cleaning temperature of a hot-tank solution would be about:

If the temperature of a cleaning liquid is too low, cleaning time will be longer. True or false?

Name the three types of chemical cleaners used in engine repair.

If the nozzle of a bead blaster is aimed at the window, it frosts the _____.

If a hot spray cleaner is run when the cleaning temperature is not high enough, what can happen to the cleaning solution?

Alkaline cleaners will remove rust and scale.