May 20, 2022  
2020-2021 Course Catalog 
    
2020-2021 Course Catalog [ARCHIVED CATALOG]

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DSL 855 - Truck Repair

Credits: 5
Lecture Hours: 1
Lab Hours: 8
Practicum Hours: 0
Work Experience: 0
Course Type: Voc/Tech
Instruction in the repair and service of equipment relating to the trucking industry. This includes all phases normally done in a general repair shop. Instruction is given under structured lab, classroom and field conditions. Experienced individuals may contact the instructor to gain admittance to this course.
Prerequisite: DSL 366 , DSL 546 , DSL 606 , DSL 145  
Competencies
  1. Demonstrate safe use of the following shop tools
    1. Jack and jack stands
    2. Hoist
    3. Battery chargers
    4. Welder
    5. Cutting torch
    6. Grinders
  2. Repair king-pins
    1. Inspect for wear
    2. Remove king-pin
    3. Investigate repair procedures
    4. Assemble and adjust clearances
  3. Inspect suspension systems
    1. Identify suspension types
    2. Identify wear points
    3. Measure air ride height
    4. Adjust ride height
    5. Perform steering gear tests
  4. Perform wheel-bearing inspection
    1. Remove wheel
    2. Remove bearings
    3. Inspect wheel bearings
    4. Install wheel seals
    5. Adjust wheel bearings
  5. Service brake systems
    1. Inspect brake chambers, shoes, disc and parking brakes (visual inspection).
    2. Check for air leaks
    3. Repair all air leaks
    4. Replace worn shoes or discs
    5. Adjust all brakes (wheel and parking).
  6. Perform cooling system checks
    1. Pressure test radiator
    2. Check anti-freeze protection
    3. Inspect all hoses
    4. Inspect belt tension and condition
  7. Perform engine tune-up
    1. Remove and install injectors/nozzles
    2. Clean injectors
    3. Test injectors/nozzles
    4. Adjust valves
    5. Adjust injection travel
    6. Remove injection pump
    7. Re-time injection pump to engine
    8. Test turbo wastegate
    9. Test air-air cooler
  8. Examine a drive line
    1. Inspect u-joints
    2. Inspect slip-shaft
    3. Inspect center support bearings
    4. Measure driveline angles
  9. Inspect a clutch
    1. Evaluate clutch operation
    2. Inspect linkage/cable
    3. Measure internal adjustment
    4. Measure free-play adjustment
    5. Check clutch brake contact
    6. Investigate hydraulic clutch
  10. Perform safety and operational checks on all electrical equipment
    1. Inspect battery condition and connections
    2. Perform battery load test
    3. Measure voltage drop at starter
    4. Perform alternator output test
  11. Perform ABS brake inspection
    1. Check system for fault codes
    2. Identify ABS system
    3. Measure AC voltage at wheel end
    4. Measure component resistance
    5. Remove inactive fault codes
  12. Evaluate electronic engine
    1. Hook-up test equipment
    2. Check active and inactive fault codes
    3. Troubleshoot active fault codes
    4. Perform system tests
    5. Follow manufactures schematic
    6. Investigate latest engine technology



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