10070175Power Transmission
Course Information
Description
The course covers the operation, power flow, diagnosis and servicing of collar shift, synchronized and power shift transmissions. The class also discusses the operation and service of wet and dry clutches differentials, planetary drive axles, P.T.O. drives and mechanical front wheel drives.
Total Credits
4
Course Competencies
  1. Identify transmission type and tractor model
    Assessment Strategies
    with use of technical manual
    with use of lab transmissions
    Criteria
    you identify transmission type and tractor model with no errors
    you summarize transmission types with minimum of 80% score on test
    you locate specific information about tractor transmissions in technical manual

  2. Identify transmission parts and components
    Assessment Strategies
    through the identification of components and parts selected as part of lab exam
    through verbal questions about lab model transmission
    through part drawings for specific transmissions
    Criteria
    you identify tractor transmission components and parts
    you complete lab exam with minimum of 80% score

  3. Explain transmission theory of operation
    Assessment Strategies
    by minimum score of 80% on transmission test
    given sample transmissions to observe and inspect
    given transmission diagrams and cutaways
    Criteria
    you explain operation of manual transmission
    you explain operation of power shift transmission
    you explain operation of final drives and M.F.W.D.

  4. Practice safe working habits
    Assessment Strategies
    given personal safety equipment
    in a simulated work environment
    given related tools and equipment
    Criteria
    you practice personal safety when working with hand tools, power tools, and lifting equipment
    you meet industry standards when working with hand tools, power tools and lifting equipment
    you complete shop safety review

  5. Perform precision measurements
    Assessment Strategies
    by completing lab exam 1 and 2 with minimum 80% score
    given micrometers, dial indicators, scales and other measuring tools
    in a simulated work environment
    given an assortment of new and used transmission components
    when an assortment of different parts and components are measured to an accuracy of .001 inches
    Criteria
    you use scales
    you use micrometers depth gauges
    you use dial indicators
    you measure part dimensions
    you make part dimensions comparisons to specifications

  6. Remove and replace tractor transmissions
    Assessment Strategies
    by completing lab assignment
    given tractor technical manual
    given lab tools and jacks
    Criteria
    you install tractor splitting stands on tractor per instructions
    you disconnect hydraulic lines, electrical wires, and mechanical linkages
    you remove bolts holding tractor housings together

  7. Remove, inspect, recondition and replace tractor clutch
    Assessment Strategies
    by removing and replacing component parts of lab clutch assemblies
    by adjusting clutch operating systems according to technical manual criteria
    Criteria
    you summarize how a clutch transmits power
    you identify types of clutches and clutches with minimum of 80% on lab exam
    you explain how clutch operating systems function
    you operate the clutch
    you diagnose clutches and clutch operating mechanism
    you remove clutches and clutch operating mechanism
    you replace clutches and clutch operating mechanism
    you repair clutches and clutch operating mechanism
    you adjust clutches and clutch operating mechanism
    you maintain clutches and clutch operating mechanism

  8. Remove, inspect, and rebuild manual transmissions
    Assessment Strategies
    by removing and replacing gears and bearings of lab transmissions
    by adjusting bearing preload and gear backlash of lab transmissions
    Criteria
    you summarize the operation and power flow of manual shift transmissions with minimum of 80%
    you identify basic parts of manual transmissions with minimum of 80% lab exam
    you diagnose transmissions gears, bearings, and controls
    you remove transmissions gears, bearings, and controls
    you replace transmissions gears, bearings, and controls
    you adjust transmissions gears, bearings, and controls

  9. Remove, inspect, and rebuild powershift transmissions
    Assessment Strategies
    by written exam for transmissions
    by disassembling and reassembling lab power shift transmission according to instructions found in the technical manual
    Criteria
    you summarize the operation and power flow of the powershift transmission with minimum of 80% on powershift transmission exam
    you identify the basic component parts of the power shift transmission with minimum of 80% on lab exam
    you remove transmission gears, bearings, clutches, brakes, hydraulic and electric controls
    you replace transmission gears, bearings, clutches, brakes, hydraulic and electric controls

  10. Remove, inspect, and reassemble tractor final drive
    Assessment Strategies
    by completing the lab assignment
    you disassembles and reassembles final drive components according to instructions and specifications found in technical manual
    Criteria
    you identify final drive components with minimum of 80% on lab exam
    you set up differential gears and bearings according to specifications with no errors
    you disassemble final drive components
    you reassemble final drive components

  11. Perform powershift transmission hydraulic and electrical tests
    Assessment Strategies
    by completing the lab assignment
    given transmission test chart
    given the technical manual
    given proper safety equipment
    Criteria
    you install pressure gauges and performs transmission pressure tests
    you compare pressure test results to technical manual diagnostic tree
    you make electrical system tests and compares voltages to specifications
    you complete transmission failure on transmission test chart