Apr 23, 2024  
2018-2019 Course Catalog 
    
2018-2019 Course Catalog [ARCHIVED CATALOG]

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CRR 877 - Refinishing Applications

Credits: 7
Lecture Hours: 3
Lab Hours: 8
Practicum Hours: 0
Work Experience: 0
Course Type: Voc/Tech
This course covers the application techniques and equipment used in auto collision repair shops for refinishing, and will deal with potential problems with chemicals. Sheet metal and plastic parts repair and replacement in preparation for painting will also be studied in the lab. Shop and personal safety will be emphasized.
Prerequisite: CRR 841  
Competencies
  1. Identify and take necessary precautions with hazardous operations and materials according to federal, state, and local regulations (HP-I)
    1. Identify safety and personal health hazards according to OSHA guidelines and the “Right to Know Law” (HP-I).
    2. Describe and demonstrate safety precautions related with isocyanate absorption.
    3. Select and use the NIOSH approved personal sanding respirator. Inspect condition and ensure fit and operation. Perform proper maintenance in accordance with OSHA regulation 1910.134 and applicable state and local regulations (HP-I).
    4. Select and use the NIOSH approved (fresh air make-up system) personal painting/refinishing respirator system. Perform proper maintenance in accordance with OSHA regulation 1910.134 and applicable state and local regulation (HP-I).
    5. Select and use the proper personal safety equipment for surface preparation, spray gun and related equipment operation, paint mixing, matching and application, paint defects, and detailing (gloves, suits, hoods, eye, and ear protection, etc.) (HP-I).
    6. Inspect spray environment to ensure compliance with federal, state, and local regulations, and for safety and cleanliness hazards (HP-I).
    7. Discuss the purpose of proper airhose
    8. Identify proper spray mask, inspect the mask to insure proper fit and operation, inspect the condition of the mask filters and other components
  2. Inspect, clean, and determine condition of spray guns and related equipment (air hoses, regulators, air lines, air source, and spray environment) (HP-I).
    1. Identify HVLP spray equipment
    2. Identify LVLP spray equipment
    3. Identify the components of a spray gun
    4. Set-up (fluid needle, nozzle, and cap), adjust, and test spray gun using fluid, air and pattern control valves (HP-I).
    5. Check and adjust spray gun operation for HVLP (high volume, low pressure) or LVLP (low volume, low pressure) guns (HP-I).
    6. Demonstrate proper cleaning procedures for spray equipment.
  3. Demonstrate proper masking techniques
    1. Identify masking materials
    2. Use plastic masking materials
    3. Use liquid masking materials
    4. Use paper masking techniques
    5. Use aperture tape
  4. Demonstrate proper maintenance on paint booth equipment
    1. Demonstrate proper filter replacement
    2. Demonstrate booth cleaning and maintenance of light fixtures, inside walls, ventilation chambers, and related mechanical components of the paint booth
    3. Describe operations of an air make-up system (including intake filters, exhaust filters, fan and other mechanical components of the system).
    4. Identify and maintain paint mixing and storage areas
  5. Inspect and identify substrate, type of finish, surface condition, and film thickness; develop and document a plan for refinishing using a total product system (HP-I).
    1. Soap and water wash entire vehicle; use appropriate cleaner to remove contaminants from those areas to be repaired (HP-I).
    2. Inspect, remove, and replace repairable plastics and other components that are recommended for off-vehicle repair (HP-I).
    3. Protect panels, glass, and parts adjacent to the repair area (HP-I).
    4. Remove paint finish (HP-I).
    5. Remove paint from the damaged area of a body panel (HP-I).
    6. Featheredge damaged areas to be refinished (HP-I).
    7. Apply suitable metal treatment or primer in accordance with total product systems (HP-I*)
    8. Mix primer, primer-surfacer or primer sealer (HP-I).
    9. Apply primer onto surface or repaired area (HP-I).
    10. Dry or wet sand area to which primer-surfacer has been applied (HP-I).
    11. Dry or wet sand areas to be refinished (HP-I).
  6. Demonstrate proper surface preparation
    1. Remove dust from area to be refinished, including cracks or moldings of adjacent areas (HP-I).
    2. Clean area to be refinished using a final cleaning solution (HP-I).
    3. Remove, with a tack rag, any dust or lint particles from the area to be refinished (HP-I).
    4. Apply suitable sealer to the area being refinished when sealing is needed or desirable (HP-I).
    5. Scruff sand to remove nibs or imperfections from a sealer (HP-I).
  7. Describe proper paint preparation and application
    1. Determine type and color of paint already on vehicle by manufacturer?s vehicle information label (HP-I).
    2. Identify and mix paint using a formula (HP-I).
    3. Shake, stir, reduce, catalyze/activate, and stain paint (HP-I).
    4. Apply finish using appropriate spray techniques (gun arc, gun angle, gun distance, gun speed, and spray pattern overlap) for the finish being applied (HP-I)
    5. Apply basecoat/clearcoat for panel blending or partial refinishing (HP-I).
    6. Apply basecoat/clearcoat for overall refinishing (HP-I.
    7. Denib, buff, and polish finishes where necessary (HP-I).
    8. Apply stone chip resistance coating (HP-G).
    9. Restore corrosion protection (HP-I).
  8. Demonstrate proper application of clearcoat
    1. Determine base color flash time
    2. Identify clearcoat flash time
    3. Determine number of coats required for clearcoat
    4. Determine texture before polishing
    5. Select proper air pressure according to manufacturer’s specifications
    6. Demonstrate spraying techniques (gun arc, gun angle, gun distance, gun speed, and spray pattern overlap) for finish being applied
    7. Examine for dirt in the painted surface
    8. Identify the cause of the dirt in finish and correct the condition
    9. Identify a dry spray pattern in the paint surface; determine the causes(s) and correct the condition
    10. Identify the appearance of fish-eyes in the finish; determine the cause(s) and correct the condition
    11. Identify bleed through and determine the cause(s) and correct the condition
    12. Identify poor adhesion; determine the cause(s) and correct the condition
    13. Examine for rust spots on the surface; determine the cause(s) and correct the condition
  9. Analyze refinishing concerns
    1. Identify blistering (raising of the paint surface); determine the cause(s) and correct the condition (GP-G).
    2. Identify blushing (milky or hazy formation); determine the cause(s) and correct the condition (HP-G).
    3. Identify lifting; determine the cause(s) and correct the condition (HP-G).
    4. Identify tape tracking; determine the cause(s) and correct the condition (HP-G).
    5. Identify low gloss condition; determine the cause(s) and correct the condition (HP-G).
    6. Identify poor adhesion; determine the cause(s) and correct the condition (HP-G).
    7. Identify paint cracking (crowsfeet or line-checking; micro-checking, etc); determine the cause(s) and correct the condition (HP-G).
    8. Identify corrosion; determine the cause(s) and correct the condition (HP-G).
  10. Perform Guide Coat/Block Sanding Procedure
    1. Use dry or wet sanding techniques of primer surfacer that was applied
    2. Show compounding around the repaired area to be refinished
    3. Use air blower to blow dust from the entire vehicle including cracks and moldings in the areas to be refinished
    4. Identify proper solvent to clean area before refinishing
    5. Show proper use of cleaning solvent before refinishing
    6. Demonstrate chemical and mechanical removal
    7. Use dry or wet sanding techniques to area to be refinished
    8. Demonstrate feather edging around repaired areas to be refinished



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