Tires, Tubes, and Rubber Products.

TM 38-400/NAVSUP PUB 572/AFMAN 23-210 MCO 4450.14/DLAM 4145.12

manufacture, not the date of retreading. Aircraft tire

f. Accessories. Accessories should be boxed or

manufacturing dates are included in the serial number of

crated and placed on the skid or platform of the unit

tires. The serial number consists of a maximum of ten

from which removed. Precautions should be taken so

positions, alpha and/ or numeric. The first four positions

that the wood of the boxes or crates does not come in

are the date of manufacture in the form of a julian date

contact with the preserved machine surfaces. When it

(last digit of the year followed by the day of the year

is not possible to place accessories on the skid, such

(i.e., 23 May 1968 is written 81440). Manufacturing

accessories should be stored adjacent to, or in the

dates shown previous to this method are identified by

vicinity of, the machine tool; proper identification should

month and year such as 10-68/October 1968. Inner

indicate clearly the unit to which the crated accessories

tubes have the date applied to the tube by decal or

belong.

stamped on the surface. The outside of the tube cartons

g. Tiering. Where it is necessary to use tiering

are also date stamped. Proper control and rotation of

methods to conserve storage space, care should be

stock procedures will be implemented to assure that the

taken in selecting machines to be tiered. Machines of

oldest aged dated items are issued first. Color tape is

long bed design, with leg-type, end frame, or multiple

used on aircraft tires manufactured in 1962 and

column bases, or weighing more than 10,000 pounds

subsequent years to aid in age identification of the tires

should rest on a solid base and not be placed on top of

while in storage at depots, storage sites, air bases, etc.

other machines.

Tires manufactured in 1962 and subsequent years are

h. machines weighing more than 10,000 pounds.

color coded with one circumferential band of 1-inch wide

Tiering of machines tools such as lathes with long beds

tape, completely around and approximately centered on

or other units with extended legs, long tables, or double

the tread. This paragraph is intended as information

columns may distort or warp the tools beyond

only and is not used as authority to require tape

reasonable repair.

Small machines that have

markings of tires currently in storage. New tires will be

rectangular columns or circular pedestal bases can be

color coded by the manufacturer before delivery.

tiered, provided suitable crating or dunnage is inserted

between the machines to bear the load. To avoid

*Tape Color Identification Data

permanent distortion of frame members by undue

Tape color

Year

stresses or strains, all machines should be leveled and

White............................

1962

supported. Machine tools may be tiered two tiers high,

Silver or gray ...............

1963/1970/1977/1984/1991/1998

but there are some types of industrial equipment that

Green ...........................

1964/1971/1978/1985/1992/1999

can be tiered higher when crated such as welders,

Blue .............................

1965/1972/1979/1986/1993/2000

furnaces, heat treatment equipment, and washing

Orange .........................

1966/1973/1980/1987/1994/2001

machines.

Yellow...........................

1967/1974/1981/1988/1995/2002

Magenta or purple ........

1968/1975/1982/1989/1996/2003

Red .............................

1969/1976/1983/1990/1997/2004

5-35. Tires, Tubes, and Rubber Products.

*Tires manufactured after 1971 have the year printed on the

a. Selection of Warehouse. Warehouses in which

colored tape.

tires are stored must provide the maximum safety and

(2) Serviceable aircraft tires will be placed

protection to the tires housed. Buildings used for tires

into suitable tire racks so that tires will be held in a

storage should-

vertical position and with each tire holding its own

(1) Provide maximum protection against fire

weight only. The rack will provide a flat or covered

and reduce fire hazards to a minimum.

surface for the tire rather than a round surface such as

(2) Provide protection from light.

pipe or tubing. If this procedure is not followed,

(3) Provide a uniformly cool temperature.

particularly in the case of tubeless tires, it maybe

(4) Be free of operating electrical equipment

impossible to mount the tire without the aid of additional

which generates ozone.

equipment. The flat spots on the tread, which may

develop from storing tires vertically, are not harmful.

(5) Provide protection against drafts or air

Such Flat spots will disappear when the tire is mounted

movement since air currents increase rubber

and inflated.

deteriorating oxygen in the air and aid combustion in

case of fire.

(3) Reparable aircraft tires may be stored in a

vertical or horizontal position. Flat spots caused by

b. Aircraft tires and tubes.

storage in either position are corrected during the

(1) The age limits for aircraft tires and aircraft

retreading process. Tires stored in a horizontal po-

inner tubes are based on the date of manufacture.

Retreaded tire age limits are also from the date of tire

5-79