MIL-B-16028G
3.6.8 Sheaves. Unless otherwise specified (see 6.2), sheaves shall be
provided with manufacturer's current standard bearings or bushings. Sheaves
shall have smooth grooves and a pitch diameter of not less than 15 times the
diameter of the largest wire rope recommended by the bucket manufacturer for
use with the bucket. When specified (see 6.2), sheave groove cleaners shall
be furnished.
3.6.9 Rollers, Shafts, and pins.
Rollers. shafts, and pins shall be the
manufacturer's current standard.
3.6.10 Bushings. Bushings shall be heat-treated alloy steel, alloy
bronze, or cast iron, as applicable.
3.7 Cleaning, treatment, and painting. Surfaces nomally painted in good
commercial practice shall be cleaned, treated, and painted as specified
herein. The color of the finish coat shall be as specified (see 6.2).
Surfaces to be painted shall be cleaned and dried to insure that they are free
from contaminants such as soil, grease, welding slag and spatter, loose mill
scale, water, dirt, corrosion product, or any other contaminating substances.
As soon as practicable after cleaning, and before any corrosion product or
other contamination can result, the surfaces shall be prepared or treated to
insure the adhesion of the coating system. The painting shall consist of at
least one coat of primer and one finish coat. The primer shall be applied to
a clean. dry surface as soon as practicable after cleaning and treating.
Painting shall be with manufacturer's current materials according to
manufacturer's current processes and the total dry film thickness shall be not
less than 2.5 mils over the entire surface. The paint shall be free from
runs, sags. orange peel, or other defects. When specified, (see 6.2), the
portions of the (item} normally painted internally and externally shall be
cleaned, treated and painted in accordance with MIL-T-704, type F or G, as
applicable. Top coat color shall be green 383 conforming to MIL-C-46168 or
MIL-C-53039 as applicable.
3.8 Identification plate. The contracting officer will furnish to the
Government inspector the required identification plates. The contractor will
be required to stamp the necessary data in the blank spaces thereon and
securely affix said plates in a conspicuous place on each unit, assembly or
subassembly, and parts as directed by the Government inspector. Nonferrous
screws, rivets, or bolts of not less than l/8-inch in diameter shall be used
to affix the plates. Nomenclature contained in contract item description
shall be placed in the top blank.
3.9 Lubrication. Lubrication fittings shall be provided in accessible,
protected positions for bearrings and moving parts requiring lubrication.
3.10 Workmanship. All parts, components, and assemblies of the bucket,
including castings, forgings, molded parts, stamping, bearings, seals,
machined surfaces, and welded parts, shall be clean and free from sand, dirt,
fins, pits, sprues, scale, flux, and other harmful extraneous material.
External surfaces shall be free from burrs, sharp edges, and corners are
required.
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