Inspect, leak test, and flush or replace transmission/transaxle oil cooler, lines, and fittings
Lesson Plan for
AUT 182-183/AUT 290
Automotive Service Technology Section A /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 inspect, leak test, and flush or replace transmission/transaxle oil cooler, lines, and fittings. 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
Inspect, leak test, and flush or replace transmission/transaxle oil cooler, lines, and fittings.
No. / Objective
1 / Given the proper tools and instruction, the student will be able to inspect, leak test, and flush or replace transmission/transaxle oil cooler, lines, and fittings, 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
Various / ASE Test Prep Automatic Transmissions / Fifth / Delmar / 33
Various / Test Prep Automatic Transmissions / 2010 / Motor Age / 55
Web Addresses
Title / Publisher / URLToday's Class / Melior / www.todaysclass.com
Equipment
As Needed / Oil Pressure Gauges / Various
Content/Presentation/Demonstration Outline
Tell students that internal coolers are located inside the engine’s radiator. Explain that heated ATF travels from the torque converter to a connection at the radiator. Let them know that inside the radiator is a small internal cooler, which is sealed from the liquid in the radiator. ATF flows through this cooler and its heat is transferred to the liquid in the radiator. The ATF then flows out of a radiator connection, back to the transmission.
Inform them that external coolers are mounted outside the engine’s radiator, normally just in front of it. Explain that air flowing through the cooler removes heat from the fluid before it is returned to the transmission.
Instruct students that a faulty transmission oil cooler can cause damage to a new transmission. Tell them to check the cooler for any leaks that could cause low fluid levels and lack of transmission cooling. Also, let them know that any obstructions in airflow can cause a lack of cooling, which can severely damage a transmission. Tell them to clean out any debris that can block airflow. Inform them that cooling fins that are severely bent or damaged should be straightened or the cooler replaced.
Teach students that debris can also get trapped inside the transmission oil cooler. This debris comes from the damaged internal components of the transmission. Tell them that if this debris is not flushed out, it can enter the new transmission and cause damage or improper operation. Let students know that any time that the transmission is replaced; they should flush the cooler with an approved solvent. Back- flushing is usually suggested. Explain that if back-flushing does not clear the blockage in the cooler, the cooler will have to be replaced.
Instruct students that if a clogged cooler is suspected, it can be checked for pressure drop and flow. To check for pressure drop, tell them to install an oil pressure gauge before and after the oil cooler. They should then start the vehicle and observe the gauges. Let them know that there should be very little pressure difference in the two gauges, and a blockage in the cooler will result in a large pressure difference. To check for fluid flow, tell students to remove the cooler outlet hose and route it into a container to catch the fluid. Start the vehicle and observe the amount of fluid that enters the can in 30 seconds. Tell them that if specs are available, they should compare the readings. If there are no specs available, let them know that the pump should generally flow at least a quart in 20 seconds.
Applications/Practice
Evaluation and feedback Prior to Testing or Lab Work
STUDENT ASSESSMENT:(Assess student progress with performance criteria.)
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.)