Drain and Refill Differential Housing

Drain and refill differential housing Lesson Plan for AUT 150-151 Maintenance and Light Repair Section A Course HS Title: Maintenance and Light Repair Program: KCTCS Courses included in HS Title: (Lesson is prepared for course highlighted.) KCTCS Course No. KCTCS Course Title

Introduction/Conte This lesson will instruct the student on how to drain and refill a differential xt housing. 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:

Lesson Grade Level No. Students No.IEP's: Length:

Drain and refill differential housing.

N Objective o. Given the proper tools and instruction, the student will be able to drain and refill a differential 1 housing, 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 N-Q.3 INSTRUCTIONAL MATERIALS/TECHNOLOGY

Teacher Designed Materials and Other Handouts

Textbooks and Workbooks Author Title/ISBN No. Edition Publisher Pages

Web Addresses Title Publisher URL Today's Class Melior www.todaysclass.com Tech Guys http://www.techguys.ca/howto/differential_fluid.html eHow http://www.ehow.com/how_2311223_drain-rear-differential.html

Equipment Quantity Item Source

Content/Presentation/Demonstration Outline Instruct students on how to drain and refill a differential housing. Tell students to start by warming up the vehicle's differential by driving it (when working in a shop) for at least 20 minutes. Have them raise the car on four jack stands. Explain that you can do a fluid change with only the rear of the vehicle lifted, but it's a less perfect process because the car isn't level. Have them place an oil drain pan underneath the differential. Let them know to be sure to use a container that is wider than the differential cover and deep enough to hold all the fluid. They will also need to keep some shop rags handy for any spills. Tell students to locate the fill plug first and make sure that it can be removed. Let them know that The plug may be rusted or stripped and require a professional's skill to take out. Next, have them loosen all the bolts on the differential cover first, using the proper socket and ratchet for the vehicle. Instruct students that once all the bolts are loosened, they should start removing the bolts at the bottom of the differential cover. Have them remove one bolt from the left side, the next bolt from the right, then back to the left again and so on. Inform them to leave two or three bolts at the top in place. Tell them to then loosen the top bolts a little more, but do not remove. They should then place pry bar between the cover and the differential. Have them gently break the seal, and let the gear oil drain into the catch pan. Tell them to wait until it stops flowing completely. Instruct them that they can now remove the final bolts at the top. Tell them to hold on to the cover with their other hand so it doesn't fall off and splash into the pan below. Have them pry the cover off completely. Let them know that more fluid will come out, so they should keep the drain pan in place. To refill the system, tell students they will need to clean, properly seal, and torque the differential cover back into place. After the cover is properly attached, tell them to fill the differential with the approved differential oil. Once the differential has been filled, have them replace the differential fill plug being sure to observe the factory specified torque. Instruct students to lower the vehicle, and when working in a shop, go for a quick test drive. Tell them to be sure to double check the differential for any signs of leaking over the next few days. If the differential were to run dry, Let them know it will cause more problems. Applications/Practice 1 Refer to content

Evaluation and feedback Prior to Testing or Lab Work 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 1 student progress on the task. Questioning techniques will be utilized as necessary to demonstrate student comprehension / depth of knowledge. 2/ Adaptations and/or accommodations for special needs students will be added if required.

STUDENT ASSESSMENT: (Assess student progress with performance criteria.) Objective 1 / Summative assessment / written test questions on stated objective / depth of knowledge 1 2/ 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.)