MIL-DTL-11891 Track Shoe Sets, Track Shoe Assemblies, Track Shoe Pads And Track Shoe Bushings, Vehicular: ElastomerizedThis specification identifies the requirements for qualification and production control of track systems supporting U.S. Military Tracked Vehicles. This specification is intended primarily for the qualification of elastomeric compounds used in the fabrication of track and track components and to ensure that the quality and performance established at qualification is maintained throughout production. The contractor is held fully responsible for the entire assembly/component including all non-elastomeric components and fasteners.

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MIL-DTL-11891G(AT)

6.2 Acquisition requirements. Acquisition documents must specify the following:

a. Title, number and date of this specification.

b. Issue of DoDISS to be cited in the solicitation, and if required, the specific issue of

individual documents referenced (see 2.1 and 2.2.).

c. Type and part number of the track shoe, track shoe pad or track shoe set required.

d. Title, number and date of applicable drawings.

e. Manufacturer's compound number from QPL.

f. Number of shoes to be assembled in a set.

g. If product marking should be other than as specified (see 3.3.4.13).

h. If first article test/inspection is required (see 3.5.1).

i. If pin/bushing design and construction should be other than as specified

(see 3.5.4).

j. If first article sample should be selected other than as specified (see 4.4.1).

k. If CI inspection lot should be other than as specified (see 4.5.3.1.1).

l. If sample size should be other than as specified in table III and table IV.

m. Packing requirements (see 5.1).

o. Mileage track pads should be removed from vehicle (see D.3.19.1).

p. Distribution of test incident reports and final reports (see D.3.27).

6.3 Definitions.

6.3.1 Definition of types.

6.3.1.1 Type I assembly. The type I track shoe assembly consists of a single-pin track

shoe, bushing, and detachable track shoe pad, as applicable, together with attaching components

such as bolts, pins, nuts, and washers.

6.3.1.1.1 Type I set. A type I track shoe set consists of a specified number of type I

assemblies (see 6.3.1.1) coupled together with all attaching components.

6.3.1.1.2 Style B detachable pad. The detachable pad for the type I or type II track shoe

assembly is the rubber pad intended for assembly on the road side of the track shoe.

6.3.1.2 Type II assembly. The type II track shoe assembly consists of a double-pin track

shoe and bushings, together with attaching components such as bolts, pins, nuts, washers,

connectors, caps, wedges, and guides and detachable pad as applicable.

6.3.1.2.1 Type II set. A type II track shoe set consists of a specified number of type II

assemblies (see 6.3.1.2) coupled together with all attaching components.