Diagnose power steering gear (rack and pinion) binding, uneven turning effort, looseness, hard steering, and noise concerns; determine necessary action.

Lesson Plan for

AUT 184-185/AUT 291

Automotive Service Technology Section B/Automotive Special Problems

Course HS Title: / Automobile Service Technology/Special Problems / Program:
KCTCS Courses included in HS Title: (Lesson is prepared for course highlighted.)
KCTCS Course No. / KCTCS Course Title
Introduction/Context / This lesson will instruct the student on how to diagnose power steering gear (rack and pinion) binding, uneven turning effort, looseness, hard steering, and noise concerns, and determine necessary action. Knowledge of these techniques and the skills required to correct problems associated with this task are necessary for a student to acquire if they wish to compete for high paying, high skilled jobs in an Automotive Repair Facility. Entry level technicians need to be able to perform this task to 100% accuracy. Incorrectly performing this task can lead to an automobile accident or create customer satisfaction issues.
Prepared By / School / Date:
Grade Level / No. Students / No.IEP's: / Lesson Length:
Task
Diagnose power steering gear (rack and pinion) binding, uneven turning effort, looseness, hard steering, and noise concerns; determine necessary action.
No. / Objective
1 / Given the proper tools and instruction, the student will be able to and pass a written test covering the task with 100% accuracy.

Connections:

Skills Standards:
OH 001
OH 002
OH 003
OD 002
OD 003
OD 005
Common Core Technical Standards:
TD-SYS-2
New Common Core Standards:
RST 11-12.2
RST 11-12 3
New Generation Science Standards:
HS-PS2-1.
HS-PS3-3.

INSTRUCTIONAL MATERIALS/TECHNOLOGY

Teacher Designed Materials and Other Handouts


Textbooks and Workbooks

Author / Title/ISBN No. / Edition / Publisher / Pages
Various / Suspension and Steering ASE Test Prep / Fifth / Delmar / 17-18


Equipment

Quantity / Item / Source


Content/Presentation/Demonstration Outline

Instruct students that most new vehicles are equipped with rack and pinion steering gear. The rack and pinion steering gear is a much simpler design. Explain that the steering column is connected directly to the sector shaft, called the pinion. The pinion operates the rack assembly, which moves the tie rods and the steering knuckles. Tell students that on hydraulically assisted rack and pinion gears, a control valve directs the flow of fluid from one side of the rack to the other. On electric-assisted gears, an electric motor assists the gear.
Teach students that they can diagnose problems with rack and pinion steering gear following the same basic procedures as with the conventional steering gear. Tell them to turn the steering wheel full left and full right, noting any noise, binding, roughness, looseness, free-play, or excessive effort. Have them inspect the mounting brackets and bushings for wear, which can cause loose or wandering steering.
Let students know that a binding or roughness while turning the wheel may indicate a worn rack gear. Also, a worn steering rack may also cause excessive steering effort. Tell students to carefully inspect the rack for leaks at the bellows/boots and at the pinion seal. On a side note, let students know that electric-assist rack and pinion steering gears may need to be re-centered after a four-wheel alignment. This is done using a scan tool. Explain that failure to center the rack in this manner may result in a pull and/or a crooked steering wheel.


Applications/Practice

1 / Refer to content


Evaluation and feedback Prior to Testing or Lab Work

1 / Objective 1. / Formative assessment / Instructor will observe students as they practice the procedure to assure correct procedure and safety practices are being followed. A checklist will be utilized to chart student progress on the task. Questioning techniques will be utilized as necessary to demonstrate student comprehension / Adaptations and/or accommodations for special needs students will be added if required.


STUDENT ASSESSMENT:(Assess student progress with performance criteria.)

1 / Objective 1 / Summative assessment / written test questions on stated objective / adaptation and / or accommodations for special needs students will be added if required
IMPACT--Reflection/Analysis of Teaching and Learning: (How did students’ progress in relation to the state objectives? Was the instruction successful? Analyze samples of student work particularly that which is unsatisfactory, for the purpose of planning further instruction.)
REFINEMENT--Lesson Extension and Follow-up: (To be filled in as the lesson is modified during initial planning and/or during the teaching learning process.)