COUPLING DEVICE

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 0010 00 0010 00-10 RAMP BAY CONTROLS AND INDICATORS (Contd) COUPLING DEVICE — The coupling end (front) of the ramp bay floats lower in the water than the interior bay, making it difficult to connect the ramp bay to an interior bay. To lift the coupling end of the ramp bay up to meet the level of the interior bay for ramp bay to interior bay connection, two coupling devices are provided. The coupling device weighs 35 lb (16 kg). Instructions for use of the coupling device are as follows: WARNING Bridge boat operators will not make waves or carry out any unnecessary thrust changes during coupling device operations. Failure to comply may result in damage to equipment or injury to personnel. CAUTION Do not attempt to use the coupling device in its folded condition. Do not attempt to lift the ramp bay while vehicles and/or equipment are on top of bay. Do not use the coupling device if it is damaged or has missing parts. Failure to comply may result in damage to equipment. NOTE Use of coupling device applies to the IRB ramp bay for coupling/uncoupling purposes only. To perform ramp bay to interior bay connection, two assistants are required to operate the coupling devices, two assistants will man the retaining ropes, and two assistants will close the longitudinal upper couplings and the lower lock-drive pins. a. Signal bridge boat operator to position connecting ends of ramp bay and interior bay together approximately 8 in. (203 mm) apart. b. Connect one guide rope to the nearest cleat on each outer ponton of ramp bay, and guide ramp bay so that eyes on ramp bay yokes and interior bay lower main couplings are aligned. c. Remove two coupling devices from ramp bay stowage compartments and position them on interior bay roadway deck, unfolded, and with hook ends facing ramp bay. WARNING Do not place hands between bays to position the coupling device hook on the ramp bay unfolding lever; bays can come together with extreme force and severe injury to personnel may result. d. Position each coupling device near center of ramp bay unfolding lever so that hook engages on unfolding lever. K

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