Name: ______

DTEC 110

Lab #1 – Steering Component Inspection

  1. Download this lab from the course’s webpage, save it on your computer, answer the questions and email it to the instructor as an attachment saved with your last name first.
  1. From page 21 of Cam Brakes and Automatic Slack Adjusters Service Manual (MM4) on the Arvin Meritor web site (there is a link on the DTEC 110 webpage), fully describe the proper process to adjust an automatic slack adjuster.
  1. From page 9 of the Dana Spicer Drive Steer Axles Service Manual (AXSM0051) on the Road Ranger website describe the difference between caster and camber and explain how to adjust each. Also copy and paste Figure 5 on page 14 below.
  1. Download the first PowerPoint presentation named FrEndPresSlides1Q-S09from the Q drive and copy and paste the picture on slide # 15 below.

The service manuals required for this lab are the following.

From the Arvin Meritor Website listed under Service Manuals – Axles:

  • Front Non-Drive Steer Axles
    Maintenance Manual 2 (Revised 10-03)

From the Road Ranger Website listed under Axle Service Manuals:

  • AXSM-0038: Steer Axles E1200I

List all the manufacturer’s data from the truck tag in the cab.

Front axle manufacturer and model: ______

What do all the numbers in the axle model refer to?

  1. What is the purpose of draw key nuts?
  2. What would be the result if the draw key nuts weren’t torqued properly?

Measure the steering knuckle vertical end play.

  1. What was the steering knuckle vertical end play?
  2. What would be the result if the steering knuckle vertical end play was too great?

Measure the upper and lower king pin bushing wear.

  1. What was the upper king pin bushing wear?
  2. What was the lower king pin bushing wear?
  3. What would the result be if the king pin bushings were worn?

Measure the tie rod wear.

  1. What was the measurement for tie rod wear?
  2. What would the result be if the tie rods were worn?
  3. Are the tie rods on the Volvo correctly installed? Explain your answer.

Measure the wheel bearing end play.

  1. Does the Volvo have conventional or unitized wheel ends?
  2. What was the measurement for wheel bearing end play?
  3. Why is wheel bearing endplay important in respect to steering alignment?
  4. Is there anything that you would replace in respect to the steering system/front axle on the Volvo?

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