TM 5-5420-278-100068 000068 00-6DRAINING PONTONSNOTETo remove water from pontons when bay is in theunfolded position, water must be pumped out throughbilge ports. Refer to WP 0053 00.Draining water from IRB-R or IRB-I is performed thesame way. Ramp bay drain plugs are located on therear (approach ramp end) of bay.1.Load bay on transporter. (Refer to WP 0022 00 or WP 0039 00.)NOTEPerform steps 2 through 4 for interior bay.2.Remove drain plugs (1) from drain ports (2) on inner and outer pontons ateither end of bay, by turning counterclockwise using 19 mm wrench. Allowwater to completely drain.3.Check each drain plug (1) to ensure gasket (3) is in place and not damaged.Notify unit maintenance if gasket (3) is missing or damaged.4.Install drain plugs (1) on drain ports (2) by turning clockwise using 19 mmwrench.NOTEPerform steps 5 through 7 for ramp bay.5.Remove drain plugs (5) from drain ports (4) on rear (approach ramp end) ofeach ponton. Allow water to completely drain.6.Check each drain plug (5) to ensure gasket (6) is in place and not damaged.Notify unit maintenance if gasket (6) is damaged or missing.7.Install drain plugs (5) on drain ports (4) of each ponton.
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