NAVISTAR - TMS 9009
Painting, Metal Parts
|Publication Date:||1 October 2006|
This specification covers the general requirements, specific properties and performance requirements of painted metal parts, and is divided into six classes.
Restricted Chemical Substances
Effective January 1, 2007, all product supplied to the requirements of this specification must comply with the requirements of the CEMS B-50 specification.
Class of finish of painted parts shall be specified on the engineering drawing. Painted parts shall meet all requirements for the specified class as described herein.
Note: Vendor Supplied Parts
Suffix P: When the ordered part number contains the suffix letter "P," it is to be supplied in the "Prime Only" condition. The supplier is responsible to insure that the part meets the requirements for primed parts as indicated in this specification.
Suffix L: When the ordered part number contains the suffix letter "L," it is to be supplied without painting. The using International plant is responsible to insure conformance to the engineering requirements of the class specified for that part.
For decorative exterior parts which require excellent corrosion resistance and appearance such as exterior portions of the cab, painted bumpers, and parts which mount to the cab. Painted bumpers specified with Class I finish shall pass requirements of CEMS GT-28 [Fig. 4A or 4B as applicable] when tested as per CEMS GT-30.
Class II & IIA
For decorative and non-decorative exterior parts that require good corrosion resistance.
Decorative: Suffix "A" indicates final part finish must meet corrosion resistance, as well as, appearance performance requirements that include color match, gloss, and weathering/ultraviol
Non- Decorative: Examples of non-decorative Class II parts that will be topcoated are frame rails and crossmembers, fabricated brackets, clips, steering arms, pitman arms, torque rods, U-bolts, disc wheels, rims, rings, spacer bars, drag links, etc. Class II parts that are not topcoated are parts that shall not be exposed to direct ultraviolet radiation, such as under hood brackets.
Class III & IIIA
For decorative and non-decorative interior cab parts that require minimal corrosion resistance.
Decorative: Decorative interior cab parts are specified by adding the suffix A, which means part finish must meet corrosion resistance, as well as, appearance performance requirements that include color match, gloss, and weathering/ultraviol
Non-decorative: Include parts such as brake and clutch lever arms and mounting brackets.
For miscellaneous frame and chassis parts that do not require the higher corrosion resistant level of Class II finishes. When necessary, this class can be specified after assembly. Examples include front axle I-beams, axle housings and fifth-wheel assemblies. When Class IV paints are applied over Class II finishes, the parts must meet the corrosion requirements of the Class II finish
For engines and parts mounted to the engine such as pulleys, brackets, oil fill and dip stick tubes, etc.
Class VI or VIA
A general purpose casting sealer, which is normally applied by the foundry to iron and steel castings such as cast suspension brackets.