TM 10-6640-215-13 4-55. REMOVE/INSTALL ROADSIDE STOWAGE BOX- continued. a. Place  one  hex  head  cap  screw  into  position  towards  center  of  the  van  support  that  will  receive  the  front hanger channel. b. Position  the  front  hanger  channel  and  attach  using  flat  washer,  lockwasher  and  nut.    This  will  support  the hanger channel so that the remaining six lockwashers, flat washers, and nuts can be secured in place. c. Place  one  hex  head  cap  screw  into  position  towards  center  of  the  van  support  that  will  receive  the  rear hanger channel. d. Position  the  rear  hanger  channel  and  attach  using  flat  washer,  lockwasher  and  nut.    This  will  support  the hanger channel so that the remaining four lockwashers, flat washers, and nuts can be secured in place. 3. Install Roadside Stowage Box.  See figure 4-55. a. Place  two  people  on  each  end  of  the  stowage  box  and  lift  box  into  position  on  front  and  rear  hanger channels. b. Attach stowage box to hanger channels with pins and then secure pins with safety pins. 4-56. REMOVE/INSTALL CURBSIDE STOWAGE BOX. This task covers:   a. Removal b. Installation INITIAL SETUP: Tools Required General Mechanics Tool Kit, (Appendix B, Section III, Item 2) Drill and Bits, (Appendix B, Section III, Item 1) Drill Set, (Appendix B, Section III, Item 1) Personnel Required Three (3) Materials/Parts Required Lockwashers, (Appendix F) Rivets, (Appendix F) REMOVAL 1. Remove Curbside Stowage Box.  See figure 4-56. a. Empty stowage box of contents before attempting removal. 4-148