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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 B

TABLE VII. T154 track hardware inspection and replacement criteria - Continued.

ITEM

ACTIVITY

INSPECTION OR ACTION

REFERENCE

End

1. Inspect

Visually check for cracked, broken or missing bolts

Connector

Daily

or connector.

Fig. 14

2. Replace

When cracked, broken or worn to less than 3/16 to

1/8 inch thick or retorqued if noticeably loose.

Center

1. Inspect

Visually check for cracked, broken bent, loose or

Guide

Daily

worn center guides.

2. Replace

When missing, cracked, broken, or worn to less than

Fig. 15

Shoe

5/16 inch thick, as measured 1 inch below top of the

center guide

Track

1. Inspect

Visually check for loose, missing or damaged pads

Pad

Daily

and pad wear.

2. Replace

(1) Individually, if grouser marks a paved surface.

Pad blowout or chunking does not meet criteria for

replacement given that grouser is not marking the

road. Replace whole assembly if pad mount is

damaged or unable to remove pad.

Note: Replacement pad height must be within 1/4

inch (plus or minus) of neighboring pads. Either use

a worn pad or shave down a spare pad.

(2) Strand set replacement considers the overall

general condition of all pads on strand. Pad wear

should be representative for all the other pads on the

strand. When 40% of the original pads have been

replaced or require replacement (do not count

multiple replacement of the same pad location), then

all pads on the strand shall be replaced with new

pads. The pad strand set may be replaced before

reaching the 40% criteria at the test director's

discretion due to local restrictions on road damage.

*NOTE: Pads from original shoe must be removed and reinstalled on the replacement shoe.

B.3.25 Photographic coverage. The test site shall furnish color photographic coverage of

all significant test events to include, as a minimum, track throw or misguide damage (vehicle and

track system); broken or bent center guides; sprocket damaged shoes; and broken pins.