System Installation - Ramp Extension Roller Assembly

Figure 2-20. Installation of Ramp Extension Roller Assembly

TM-55-1680-358-12P Survival Kit Overwater Individual (NSN 1680-00-973-1863) Manual
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TM 55-1680-358-12&P (5) Install three hex head bolts (30, Figure 3-2) and flat washers (31) to secure each ramp center roller mounting plate (12, Figure 3-11) to the helicopter ramp floor. (6) Attach each inboard ramp roller assembly (13 and 14, Figure 3-2) to forward and aft ramp center roller mounting bar assemblies (16 and 17). Use two hex head bolts (36), flat washers (33) and self-locking nuts (37). Make certain that the flat washers are used under the component which turns, either the nut or bolt. e. Ramp Skid Pad. Install ramp skid pad (20, Figure 3-2) as follows: (1) Refer to steps 2-9a. and 2-9a.(1) and Figure 2-13 to gain access to screw locations. (2) Install ramp skid pad (20, Figure 3-2) as shown in Figure 2-19, using previously removed hardware. Seal ramp skid pad periphery with (PR-1440- Class B) BMS-5-44 Sealant. 2-10. System Installation - Ramp Extension Roller Assembly. Install ramp extension roller assemblies (15, Figure 3-2) as follows: a. Ramp Extension Roller Assemblies. Install ramp extension roller assemblies (15, Figure 3-2) as follows: (1) Position a ramp extension roller assembly (15) on the left ramp extension. Make sure that six quick-release pins (1, Figure 3-12) engage the holes drilled in paragraph 2-7 as shown in Figure 2-20. (2) Install the remaining ramp extension roller assembly (15, Figure 3-2) on right ramp extension as described in paragraph 2-10b.(l). b. Ramp and Ramp Extension Support Assemblies. Install ramp support assembly (19, Figure 3-2) and ramp extension support assembly (18) as follows: (1) Refer to Figures 2-21 and 2-22 and position ramp support assembly (19, Figure 3-2) so that index support ramp support weldment (1, Figure 3-15) engages both ramp support holes in ramp skid pad (20, Figure 3-2). Adjust support assembly to the proper height. (2) Refer to Figures 2-21 and 2-22 and position a ramp extension support assembly (18, Figure 3-2) under each ramp extension roller assembly (15) so that ramp extensions support index support (1, Figure 3-14) is engaged. Ensure that FWD/AFT marking on support assembly is oriented parallel with aircraft centerline. 2-30

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