Part of Unit: Shop Safety Practices
Lesson Plan Overview / Details
This lesson is designed to introduce hand tool safety to the student. This lesson is designed for the beginning student that has very little experience in the field.
- Estimate-time will vary
- 2 Hours
California Career and Technical Education Standards
- T.C.C2.1 Understand and use appropriate tools and equipment, such as wrenches, sockets, a...
- T.C.C6.1 Perform general engine maintenance, diagnosis, service and repair in accordance ...
- T.FS.4.4 Understand the role and function of tools, equipment, and machines in the latest...
- T.FS.5.1 Apply appropriate problem-solving strategies and critical thinking skills to wor...
- T.FS.5.2 Understand the universal, systematic problem-solving model that incorporates inp...
- T.FS.5.3 Use critical thinking skills to make informed decisions and solve problems.
- T.FS.5.4 Apply troubleshooting strategies, including failure analysis procedures, to issu...
- T.FS.5.5 Understand and demonstrate the ability to plan and solve problems in a systemati...
- T.FS.6.3 Use tools, equipment, and machinery safely and appropriately.
- T.FS.7.3 Understand the need to adapt to varied roles and responsibilities.
- T.FS.9.1 Understand the characteristics and benefits of teamwork, leadership, and citizen...
- T.FS.9.6 Participate as a member of a team and contribute to a group effort.
California Academic Content Standards (Reinforced)
Objectives for lesson
- Students will familiarize themselves with the proper name and usage of a variety of hand tools that they will be using in automotive repair.
- Students will develop skills in the use of hand tools and in the ability to disassemble and reassemble mechanical items correctly.
Activities in this Lesson
- Using hand tools and following directions - Projects
I begin the lesson with students split into groups of 2-4. Each group has a Briggs and Stratton OHV engine. If several OHV small engines are not available, the instructor will have to use whatever automotive components they have available. Other items that work well for this lesson are carburetors, starters, and alternators.
For the small engines, students are also given a tool set which has either a 3/8 or 1/4 drive socket set, various slotted and phillips screwdrivers, combination wrench sets, pliers, side cutters and other miscellaneous hand tools necessary for the lesson. Students are given a step-by-step handout that will walk them through the removal and re-installation of the engines cylinder head.
- Students model what they learned - Group Work
Each group of students now picks one member of the group to be in charge of the tools. Each group has its own tool person. When a tool is needed they must ask for it using the correct name. When the task is completed they turn it back into the groups tool person. (This also helps to start getting the students used to keeping track of tools throughout a repair).
- Students follow along with instructor - Demo / Modeling
Once the students have picked their tool person, and have their tools, engines and worksheets, the instructor begins a thorough step-by-step with the students on the removal of the cylinder head. One of the benefits of the Briggs and Stratton OHV engine is that the instructor can compare and contrast the components on the small engines with those on an automobile.
The instructor should take the time to discuss each tool, properly identifying it as well as explaining the proper usage and common misuse and danger. The instructor should take the time to discuss each component as they are removed, in particular how they should be inspected on a vehicle and what determines the need for repair or replacement of each component.
- Students follow along with the reassembly - Demo / Modeling
The instructor now walks the students through the proper reinstallation of the cylinder head on the engine. The students should have already inspected the components. Students are still required to check tools in and out with their tool person. It is the tool person's responsibility to make sure that the tools are properly identified.
Remember: get the students used to returning tools to the tool trays or carts or however you store them. This will begin to get the students out of the habit of leaving sockets, wrenches etc. on radiator supports, fenderwells or the ground as they are working on vehicles in the shop.
- Students model what they have learned - Demo / Modeling
Now is the chance for the students to complete the repair without the direct instruction of the teacher. The group will have to perform all of the previous removal/inspection/re-installation of the engines while discussing with each other each aspect of the task. The instructor should walk around and guide each group asking questions of individuals to check for understanding.
- Assessment Types:
- Projects, Demonstrations, Observations,
Various assessments are used to demonstrate student understanding. Students will demonstrate the proper usage of the hand tools as well as the ability to correctly identify the tool names. Instructor observation of the groups working together as well as asking questions will quickly identify whether the students have learned the intended information.
Additionally, the completed projects reassembled correctly are used as another assessment tool.
No resources are included, yet.
STEP BY STEP Briggs and Stratton 6.5 HP Cylinder Head R&R
- Briggs and Stratton service manual
- Head gasket
- Carburetor base gasket
- Exhaust gasket
- Safety Glasses
- Drain pans (2)
- ¼ drive socket set metric & fractional
- Screwdriver set
- Side cutters
- Plastic bags
- Torque wrench (inch lbs.)
- Remove fuel from fuel tank. Store in sealed gas can in Flammable cabinet.
- Remove oil from crankcase. Pour oil in waste oil drum.
- Remove exhaust shield. Throughout this repair and all others you will be doing, ALWAYS place the hardware back in the holes where they came out of if possible. If that is not possible, bag and label the hardware and set aside.
- Remove exhaust pipe and gasket.
- Disconnect fuel lines and remove fuel tank.
- Remove carburetor shroud.
- Disconnect throttle springs and wiring from the brake bracket (note routing of wire under bracket).
- Remove the brake bracket.
- Remove the carburetor and gasket.
- Remove valve cover, loosen rocker arms.
- Remove cylinder head bolts.
- Remove cylinder head pushrods and gasket.
- Clean and inspect cylinder head.
- Clean and inspect engine block.
- Clean and inspect carburetor base.
- Clean and inspect exhaust base.
- Install new head gasket.
- Install cylinder head.
- Install head bolts. Torque to specifications given in service manual.
- Install pushrods, adjust valves per specifications.
- Install valve cover.
- Install carburetor base gasket.
- Install carburetor, torque to specifications.