To Increase Vehicle Rigidity and Strength

BODY REPAIR FUNDAMENTALS

TO INCREASE VEHICLE RIGIDITY AND STRENGTH

1. URETHANE FOAM FILLER
Some vehicles have Urethane Foam Filler in body panel spaces to provide extra rigidity for the lightweight body and to reduce noise and vibration.




REQUIRED MATERIAL CHARACTERISTICS FOR SERVICE
- Density: Over 0.1 g/cu.cm (0.06 oz/cu in)
- Noticeable volumetric changes should not occur with changes in humidity and temperature.
- Material characteristics should not adversely affect ED (electrodeposition) coats.
[Super Panel Filler (3M Brand) or equivalent]

SERVICE PARTS AVAILABILITY
- Each service part will be ED coated. These are filled with urethane foam filler after the trim mounting clips have been installed and, for the front pillar, when the drain hose has been installed.
- When these parts are replaced, Urethane foam filler must be injected into the place where it was cut away.

2. WELD BOND
Some vehicles have Weld Bond applied to the entire perimeter of the body panels at door locations and side roof rails to increase torsional rigidity and body strength.







REQUIRED MATERIAL CHARACTERISTICS FOR SERVICE
- Material should be a 2-components epoxy adhesive.
[CIBA-GEIGY: Araldite AV 8113/Hardener HV8113 or equivalent]
- Use in conjunction with spot welding.

SERVICE PARTS AVAILABILITY
- Assembled service parts will be provided with applied weld bond.
- When any of these parts are replaced, weld bond must be applied to the mating surfaces on the panel. If these panel parts are fixed with MIG welding, avoid applying weld bond around MIG weld holes.




3. STIFFENER
Some vehicles have stiffeners to prevent dents.