BRIDGE RECOVERY, SUCCESSIVE BAY METHOD

BRIDGE RECOVERY, SUCCESSIVE BAY METHOD (cont) - TM-5-5420-278-10_336

TM-5-5420-278-10 M85 Tank Chassis Transporting: for Bridge Armored-Vehicle-Launched Scissoring Type Class 80 Manual
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TM 5-5420-278-10 0037 00 0037 00-1 BRIDGE RECOVERY, SUCCESSIVE BAY METHOD In the successive method, the bridge assembly is opened by disconnecting two interior bays near either shore (depending on where the retrieval equipment is available) and the shoreward endspans are then pulled back on shore approximately 5 ft (15 m). This creates the space required to disconnect and maneuver the first interior bay from the bridge assembly. WARNING All bridge personnel must wear approved life jackets while on the bridge. Failure to comply may result in injury or death to personnel. Exercise caution when walking near centerline of roadway; the ponton alignment lugs project above the roadway surface on interior bays and constitute a tripping hazard. Failure to comply may result in injury to personnel. NOTE Ensure roadway surface is free of rocks, mud, and debris prior to bridge recovery. a. Disconnect handrail ropes from interior bay (1) and ramp bay (4) (WP 0010 00 and WP 0011 00). WARNING Do not place fingers under longitudinal upper couplings when opening them, or serious injury to personnel may result. b. Open two longitudinal upper couplings (3) on interior bay (1) and ramp bay (4). CAUTION Ensure longitudinal upper couplings are opened prior to disengaging lower lock-drive pins, or damage to equipment may result. c. Install T-wrench on jackscrew (2) of lower lock-drive and turn counterclockwise until lower lock-drive pin is fully retracted, then back off jackscrew (2) one full rotation. d. Repeat step c for remaining lower lock-drive. e. Open both pump access covers (5), set pump control valve levers (6) to UP, and raise ramp bay (4) enough to relieve grounding. Close access covers (5). 1 6 3 5 2 3 T-WRENCH 4

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