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)

ASTM E1131

- Standard Test Method for Compositional Analysis by

Thermogravimetry.

(Application for copies should be addressed to the American Society for Testing and

Materials, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959.)

2.3 Order of precedence. In the event of a conflict between the text of this document

and the references cited herein, the text of this document takes precedence. Nothing in this

document, however, supersedes applicable laws and regulations unless a specific exemption has

been obtained.

3. REQUIREMENTS

3.1 Qualification. Track shoe assemblies, track shoe pads, and track shoe bushings

furnished under this specification shall be products which have been tested and have passed the

qualification tests specified herein. The qualification process is divided into three phases as

defined in section 3 of this specification: Phase I, Plant/Facilities Inspections; Phase II,

Establishment of Contractor's Control Plan and Compound Characteristics; and Phase III,

Endurance Tests. The procedures and requirements of these phases must be successfully

completed and all requirements met prior to a contractor becoming qualified for listing on the

QPL. Section 4 of this specification establishes the quality control requirements based on

section 3 as applicable to all track procurement contracts.

3.1.1 Control plan. The contractor shall provide a control plan (see 4.5.1) addressing the

requirements of this specification that identifies how the contractor intends to conform to this

specification. This plan will require Government approval and will be included as part of the

qualification process. This plan shall be submitted to the Quality Assurance Representative

(QAR) and Preparing Activity for review and approval. This control plan should be general in

nature, identifying the contractor's capability in conforming to the requirements of this

specification and should not contain proprietary information. This plan should identify

subcontractor control requirements in compliance to this specification as related to rubber.

3.1.2 Materials. The materials used in the production of shoes, pads, bushings and

assemblies shall meet the requirements of this specification and be in accordance with the

applicable drawings of the track TDPs.

3.1.3 Recycled, recovered, or environmentally preferable materials. Recycled, recovered,

or environmentally preferable materials should be used to the maximum extent possible provided

that the material meets or exceeds the operational and maintenance requirements, and promotes

economically advantageous life cycle costs.