ARMY TM 5-5420-212-10-1MARINE CORPS TM 08676A-10/1-1(21) Slide rear roller beam toward bankseat beam to fit longitudinal girders. Position roller beam usinglongitudinal girders, then disconnect girders from RRB and place on the ground.(22) Unlock rollers in rear roller beam.(23) Delaunch to 5p6 (over FRB).NOTEThe center of gravity of bridge is over the front roller beam. It is at this point that any minoradjustments in the rear roller beam placement must be made. Ensure that bridge will come to reston rear roller beam correctly. The bridge should rest between flanges of rollers, not on top ofthem. The rear roller beam must be at 90° to bridge centerline.6-36
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