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)

APPENDIX C

C.3.19.1 Track failure (break-in). Any track failures which occur during break-in or are

damaged as a result of the following incidents will not be counted against qualification

requirements:

a. Mechanical failure of non track parts resulting in track damage.

b. Sprocket damaged shoes.

C.3.20 Disposition of track test hardware. All track test hardware shall be retained at the

test site pending disposal instructions, including failed track components. Track that is defective

or has completed testing may be stored outdoors while waiting for disposition instructions. It is

essential that each manufacturer's track samples are not commingled with samples from another

manufacturer.

C.3.20.1 Failed track components. All failed track components shall be tagged and

marked so as to identify accumulated test miles and cross reference to daily logs or test reports, as

appropriate to provide for traceable component failure history.

C.3.20.2 Hardware (failure analysis). Hardware required for failure analysis shall be

provided to the Preparing Activity upon request.

C.3.21 Vehicle disposition. Upon completion of the test and inspections, the vehicle shall

be returned to the original pretest condition. Vehicle disposition instructions will be issued by the

Preparing Activity.

C.3.22 Documentation/test reporting/photographic coverage. Any test incidents related

to track, suspension and /or drive train components shall be documented on AMC Form 2134,

Test Incident Report (TIR) or comparable test reporting document. The test site shall provide

these reports to the Preparing Activity as they are generated. Each TIR or other test reporting

document shall include as a minimum the following:

Description of failed component/part (noun).

Mileage track has endured.

Code/Serial number identification of failed component and code/serial number of

replacement component.

Vehicle registration number.

Date of incident.

Description of incident. Description shall be detailed and include cause, if evident.

Test course where incident occurred, if known.

Estimated speed of vehicle when incident occurred.