May 17, 2022  
2020-2021 Course Catalog 
    
2020-2021 Course Catalog [ARCHIVED CATALOG]

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AUT 163 - Automotive Engine Repair

Credits: 3
Lecture Hours: 2
Lab Hours: 2
Practicum Hours: 0
Work Experience: 0
Course Type: Voc/Tech
Course will provide instruction in the theory and operation of 4-stroke cycle engines. Emphasis will be placed on both design and proper disassembly/ reassembly procedures.
Prerequisite: AUT 114   or AUT 111  
Competencies
  1. Perform proper shop safety procedures
    1. Apply work area safety skills
    2. Demonstrate personal safety working habits
    3. Practice tool and equipment safety use
    4. Follow manufactures repair procedures
    5. Follow manufactures warnings and government regulations.
  2. Explain the fundamentals of basic engine design and operation
    1. Describe basic engine operation
    2. Describe the basic laws of physics involved with engine operation
    3. Classify engines according to the number of cycles, the number of cylinders, cylinder arrangement, and valvetrain type
    4. Define the four-stroke cycle theory
    5. Describe the different cylinder arrangements and the advantages of each
    6. Describe the different valvetrains used in modern engines.
    7. Define engine measurement terms such as bore and stroke, displacement, compression ration, engine efficiency, horsepower and torque, horsepower losses, mechanical efficiency, and thermal efficiency
    8. Describe the basic operation of alternative engine designs, including diesel, Miller-cycle, and stratified charge
    9. Identify engine using vehicle identification number.
    10. Acquire pertinent service information for specific repair procedures.
  3. Diagnosis and repair cylinder head and valve train.
    1. Visually inspect cylinder head(s) for cracks; check gasket surface areas for warpage and leakage; check passage condition
    2. Remove and reinstall cylinder heads and gaskets; tighten according to manufacturer’s specifications and procedures
    3. Inspect valve springs for squareness and free height comparison; determine necessary action
    4. Inspect valve guides for wear; check valve stem-to-guide clearance; determine necessary action
    5. Inspect valves and valve seats; determine necessary action.
    6. Check valve face-to-seat contact and valve seat concentricity (runout); determine necessary action
    7. Check valve spring assembled height and valve stem height; determine necessary action
    8. Inspect pushrods, rocker arms, rocker arm pivots and shafts for wear, bending, cracks, looseness, and blocked oil passages (orifices); determine necessary action.
    9. Inspect hydraulic or mechanical lifters; determine necessary action.
    10. Adjust valves (mechanical or hydraulic lifters).
    11. Inspect camshaft drives (including gear wear and backlash, sprocket and chain wear); determine necessary action
    12. Inspect and replace timing belts (chains), overhead camdrive sprockets, and tensioners; check belt/chain; adjust as necessary
    13. Inspect camshaft for runout, journal wear and lobe wear.
    14. Inspect camshaft bearing surface for wear, damage, out-of-round, and alignment; determine necessary action
    15. Establish camshaft(s) timing and cam sensor indexing according to manufacturer’s specifications and procedures
  4. Diagnosis and repair engine block assembly
    1. Disassemble engine block; clean and prepare components for inspection and reassembly
    2. Inspect engine block for visible cracks, passage condition, core and gallery plug condition, and surface warpage; determine necessary action
    3. Inspect and measure cylinder walls/sleeves for damage, wear and ridges; determine necessary action
    4. Deglaze and clean cylinder walls
    5. Inspect and measure camshaft bearings for wear, damage, out-of-round, and alignment; determine necessary action
    6. Inspect crankshaft for end play, straightness, journal damage, keyway damage, thrust flange and sealing surface condition, and visual surface cracks; check oil passage condition; measure journal wear; check crankshaft sensor reluctor ring (where applicabl
    7. Inspect main and connecting rod bearings for damage and wear; determine necessary action
    8. Identify piston and bearing wear patterns that indicate connecting rod alignment and main bearing bore problems; determine necessary action.
    9. Inspect and measure pistons; determine necessary action.
    10. Remove and replace piston pin
    11. Inspect, measure, and install piston rings
    12. Inspect auxiliary (balance, intermediate, idler, counterbalance or silencer) shaft(s); inspect shaft(s) and support bearings for damage and wear; determine necessary action; reinstall and time
    13. Inspect or replace crankshaft vibration damper (harmonic balancer).
    14. Assemble engine block assembly
    15. Install engine covers using gaskets, seals and sealers as required.



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