ASE E3 Auxiliary Power Systems Installation & Repair Practice Test

The ASE E3 Auxiliary Power Systems Installation & Repair practice exam will test your knowledge of hydraulic systems, mechanical system and pneumatic systems. Find mechanic training near you.


You passed.

Not quite a pass. Study guide linked below. 🙂

#1. Which of these is the correct hydraulic hose to install on the suction side of the hydraulic pump?

A one-spiral wire hydraulic hose is correct

#2. A cylinder head packing is leaking. Technician A says that nicks on the cylinder rod could be the cause. Technician B says that a rolled over V packing could be the cause. Who is right?

Neither A or B is correct

#3. A 3-way valve is used with:

a single acting cylinder is correct

#4. In the illustration shown, which of these is the piston seal?

y is correct

#5. A technician is selecting a hydraulic hose to replace a damaged suction hose. All of these should be considered EXCEPT

pressure relief setting of the hydraulic system is correct

#6. Small bits and pieces of rubber are found throughout a hydraulic system. Which of these is the LEAST likely source?

The pump shaft seal is correct



This is not an official test, it is a practice test based on the official study guide. Use it for entertainment only.