MIL-STD-186F (MI)
5.5.4.15.2.1 CARC topcoat. Ensure that the surface to which the topcoat is applied is clean and dry. The surface temperature should be between 15.5° and
37.7°C at application and for a period of time after application sufficient to assure adequate cure prior to exposure to adverse conditions. Apply evenly to blend with the original surface around the area to be touched up using the blend-in technique (see 4.25.2.1). Allow epoxy primer to dry a minimum of 1 hour or until dry to the touch before topcoating. For MIL-P-53030, all water must evaporate prior to top- coating. If the primer has dried for more than 168 hours, it should be lightly scuff sanded and solvent wiped to promote adhesion. Application of CARC topcoats to surfaces previously painted with CARC (e.g., in repair of light topcoat damage) may proceed while the original coat is still tacky. Polyurethane which has fully cured should be thoroughly cleaned prior to refinishing. Epoxy which has fully cured should be cleaned, scuff sanded, and solvent wiped prior to refinishing. The surface shall be thoroughly cleaned of absorbed/deposited carbon, salt, fuel, oil, hydraulic/transmission fluid, fingerprints and wax. Scuff sand to remove any visible paint defects such as chalk, then solvent wipe prior to application of new topcoat.
Do not apply CARC topcoats to surfaces which will be subjected to temperatures greater than 204°C, such as exhaust systems or turbochargers.
5.5.5 Inspection requirements.
5.5.5.1 Responsibility for inspection. Unless otherwise specified in the contract or purchase order, the contractor is responsible for the performance of all inspections as specified herein. Except as otherwise specified, the contractor may utilize his own facilities or any commercial laboratory acceptable to the Government. The Government reserves the right to perform any of the inspections set forth in this standard where such inspections are deemed necessary to assure supplies and services conform to prescribed requirements.
5.5.5.2 General inspection requirements. All equipment being processed shall be inspected at the various stages of cleaning, surface treating, electroplating, and application of other types of finishes and coatings, to ascertain that each process is done in strict accordance with this standard and individual specifications. The inspections and tests covered in this section shall not be considered restrictive. Any condition not in full accord with the applicable drawings and specifications shall be regarded as defective.
5.5.5.2.1 Tests. Materials, prior to their use, shall be inspected, sampled, and tested in accordance with the applicable specification and standard to determine compliance with the requirements of the particular specification. When purchasing CARC paint, e.g., MIL-C-46168, production samples from the first lot of each color of the subject paint and a sample from each lot of paint manufactured shall be submitted to the Army Research Laboratory, Weapons and Materials Research Directorate, ATTN: AMSRL-WM, Aberdeen Proving Ground, MD 21005, for testing. Samples of surfaces with molded-in color shall also be sent to the above laboratory.
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