CTE Task: Bleed Power Steering System

Click here to download the teacher material for this task. 

COURSE:

Maintenance and Light Repair III (MLR III)

TASK LENGTH:

1 Hour

 

Bleed Power Steering System

Task Description

Standards

Students will:

  • read the linked materials,
  • watch the linked videos using guided notes,
  • complete the student worksheet, and
  • record a video of themselves describing the steps and tools involved in bleeding the power steering system.

 

Safety Note: If possible, students should do this task with a vehicle, but ensure the students do so safely. Lifting the vehicle is not required for the purpose of the student video.

Overall Standard (3): Students will inspect, service, and repair suspension and steering systems.

Flush, Fill, and bleed power steering system. (3.5)

 Content Understandings

Extending Understandings

Upon successful completion of these tasks students will demonstrate the ability to:

  • Explain why the power steering system must be bled.
  • Select the tools required.
  • Describe required safety precautions.
  • Locate the power steering pump.
  • Locate the power steering reservoir.
  • Describe how to check the fluid level.
  • Identify the appropriate power steering fluid for that vehicle.
  • Explain why the vehicle they are working on requires a particular method of bleeding the power steering system.
  • Explain the steps in bleeding the power steering system.
  • Locate the bleed valve (if available).
  • Describe the indicators that show the system no longer has air in it. 

To move students towards deeper understanding, they should be given opportunities to:

  • Describe how the power steering systems operates.
  • Explain why some vehicles do not need the power steering system bled.
  • Describe possible methods of bleeding the power system on different vehicles with different power steering systems.

 

Support Strategies

If students are struggling to access this task, additional supports and strategies could be employed as students are engaging with the task.

Key Terms

Sentence Frames

Scaffolded Questions

Power Steering Reservoir

The ______________ holds the power steering fluid for the vehicle.

How can the power steering reservoir be connected to the power steering pump?

 

Instructional Resources

Materials to read (see student/teacher guide below)

HowStuffWorks.com Contributors "How to Remove Air From Power Steering" 19 May 2011.
https://auto.howstuffworks.com/under-the-hood/vehicle-maintenance/how-to-remove-air-from-power-steering.htm 17 August 2020

 

Free ASE Study Guides. (n.d) Retrieved August 18, 2020. Bleeding a Power Steering System

https://www.freeasestudyguides.com/maintenance-bleed-power-steering.html

 

Videos to watch (see note guide below)

Garage Gurus (2015, Oct 21). Power Steering Air Bleed Process (using vacuum pump) (Video). YouTube.

https://www.youtube.com/watch?v=U1GgQ-3asJQ (5:30 minutes)

 

Andy’s Garage (2019, Dec 22). How To Remove Air From Power Steering System without a Bleeder Valve (Video). YouTube. https://www.youtube.com/watch?v=P0hOL4JwMTE (5:20 minutes)

Student Resource

Click here to download the student material for this task. 

Student Reading Guide

How to Remove Air from Power Steering (Using Bleed Valve)

 

  1. Remove power steering reservoir cap.
  2. Check fluid level.
  3. Fill with manufacture’s specified fluid.
  4. Replace cap on reservoir.
  5. Locate the power steering bleed valve on steering box.  The valve can be found by following high pressure line from the power steering pump to the steering box. Refer to owner’s manual if necessary.
  6. Place a hose on the end of the bleed valve.
  7. Place a drain pan on floor (in front of the vehicle) where the drain hose ends.
  8. Turn on the engine.
  9. Loosen the bleed valve slightly.
  10. Turn the steering the entire way (until it stops) from side to side for approximately 10 times.
  11. Turn of the engine.
  12. Close the bleed valve.
  13. Check the fluid level and refill as necessary.
  14. Check the fluid in the drain pan for bubbles.
  15. Repeat steps 8 – 14 until there are no bubbles in the drain pan fluid.
  16. Ensure the fluid level is full- do not overfill.

 

Bleeding a Power Steering System (Without a Bleed Valve)

  1. Jack or lift the front tires off the ground.
  2. Remove power steering reservoir cap.
  3. Check fluid level.
  4. Fill with manufacture’s specified fluid.
  5. Turn on the engine.
  6. Turn the steering the entire way (until it stops) from side to side for approximately 10 times. NOTE: Do not hold the steering wheel all the way to one side for more than 5 seconds at any time.
  7. Turn of the engine.
  8. Check the fluid for bubbles and refill as necessary.
  9. Repeat steps 5 – 8 until there are no bubbles in the fluid.
  10. Ensure the fluid level is full – do not over fill.

 

Student Video Guide

Power Steering Air Bleed Process (when a vacuum pump is available)

  1. Jack or lift the vehicle so the front wheels are off the ground.
  2. Locate the power steering reservoir. It is under the hood.  You may use the owner’s manual to locate it.
  3. Fil the reservoir with the manufacturer’s approved power steering fluid.
  4. Insert vacuum adapter into the reservoir.
  5. Attach a vacuum pump to the adapter.
  6. Start the vehicle engine.
  7. Pull air from the power steering system by applying 20-25 inches of pressure with the vacuum pump.
  8. Turn the steering the entire way (until it stops) from side to side 10 times.
  9. Turn the vehicle engine off.
  10. Release vacuum and check the level of the fluid in the reservoir.
  11. Repeat steps 3 through 10 until there is no more sound from the pump and no more fluid needs to be added.
  12. Remove the adapter and replace the cap on the reservoir.

How To Remove Air From Power Steering System without a Bleeder Valve

  1. Noise from power steering pump indicates air in the system. 
  2. Locate the power steering reservoir. 
  3. Fill the reservoir with the manufacturer’s approved power steering fluid.
  4. Leave the cap off the reservoir.
  5. Start the vehicle engine.
  6. Turn the steering the entire way (until it stops) from side to side for approximately 10 times.
  7. Turn the vehicle engine off and check the level of the fluid in the reservoir.
  8. Repeat steps 3 through 7 until no more fluid needs to be added.
  9. Replace the cap on the reservoir and take the vehicle for a test drive.  Recheck fluid level.

 

Student Worksheet 

 

Questions for after reading and watching all resources

 

What may happen if air is in the power steering system?

 

 

 

 

What indicates it is time to bleed the air from a power steering system?

 

 

 

 

What safety precautions are required while flushing the coolant system of a vehicle?

 

 

 

 

 

 

What precautions must be taken when adding power steering fluid?

 

 

 

 

What tools and parts are needed?

 

 

 

 

 

 

 

What are the steps to bleed the air from the power steering system in your vehicle?