This specification covers surface appearance and dry film property requirements of the primer, inspection, KCC, quality control and source approval, repair of primed surfaces, and handling required for prime painted FRP( Fiber Reinforced Polymer) or thermoplastic parts prior to shipment to the using NAVISTAR plant. Parts receiving heat cured topcoats and parts that specify air dry topcoat finish are covered by this specification.

Restricted Chemical Substances

All product supplied to the requirements of this specification must comply with the requirements of the MPAPS B-50 specification.

APPLICATION

This specification covers the prepaint treatment required for open or closed mold fiberglass reinforced thermosetting plastic parts, or thermoplastic parts that are injection molded or thermoformed, which are to be subsequently finish painted in NAVISTAR facilities. Typical parts are hood and fender assemblies, headlight panels, radiator grilles, window panel inserts, engine covers, and similar exterior and interior applications.