Section I. INTRODUCTION
This bulletin is published to provide security of tactical wheeled vehicles. These instructions are based on requirements
established by directive (AR 190-51 Security of Army Property at Unit and Installation Level).
a. This bulletin establishes minimum requirements needed to achieve the protection required for tactical vehicles of
b. If vehicles are equipped with devices that attain a degree of security equal to that provided by those described in
this TB, vehicles need not be modified solely to make them exactly compatible with the devices illustrated.
1-3. Installation Level.
Organizational Maintenance shall perform the installation of security devices described within the bulletin.
Section II. PROCEDURES
a. All vehicles listed (Table 1) will utilize the appropriate clamp to attach the chain to the steering column. Typical
Table 1. Recommended Clamps for Listed Vehicles
CLAMP w/Bolts, Nut, Washer
M151,1/4 Ton Trk
M561, 1 1/4 Ton Trk
M35, 2 1/2 Ton Trk
M39/M809, 5 Ton Trk
M656, 5 Ton Trk
M123, 10 Ton Trk
M911, 20 Ton Trk