TM 5-3810-207-20/TO 36C23-3-37-12 CHAPTER 5 CRANE MAINTENANCE INSTRUCTIONS Section I.  CRANE CAB ASSEMBLY 119.  General The  crane  cab  is  located  on  the  revolving  frame and  encloses  the  revolving  frame  shaft  assemblies,  A- frame,  engine  with  accessories,  and  all  levers,  pedals, and   linkage   controls.      It   is   constructed   of   sheet-steel welded   panels   and   doors,   has   glass   windows,   and   is fastened    to    the    floor    of    the    revolving    frame    with capscrews and lockwashers. 120.  Operator's Door a. Removal. (1) Open the operator's door. (2) Remove  the  operator's  door  as  instructed on figure 50. b. Cleaning and Inspection. (1) Clean the operator's door with an approved cleaning solvent. (2) Inspect  the  door  for  bends,  broken  glass, and    other    damage.        Replace    defective operator's door or glass. c. Installation.          Install     the     operator's     door     as illustrated on figure 50. 121.  Operator's Cab Left-Hand Window a. Removal.    Remove  the  operator's  cab  left-hand window as instructed on figure 51. b. Cleaning and Inspection. (1) Clean  all  parts  with  an  approved  cleaning solvent. (2) Inspect  the  window  and  track  for  breaks, cracks,     and     other     damage.          Replace defective window and tracks. c. Installation.      Install   the   tracks   and   window   as illustrated on figure 51. 122.  Door Window and Windshield Glass a. Removal. (1) Insert  the  hook  end  of  the  rubber  channel tool  (fig.    52)  in  the  rubber  channel  seal strip at the seam and slide tool around the channel to break the seal. (2) After    seal    has    been    broken,    insert    the straight   end   of   the   rubber   channel   tool between  the  rubber  channel  and  the  glass and    move    it    slowly    around    the    rubber channel to break the seal. (3) Press  glass  gently  while  breaking  the  seal and glass will slide out of the panel as soon as the seal is completely broken. (4) To remove front window, repeat (1) through (3) above. b. Cleaning, Inspection, and Repair. (1) Clean  the  edges  of  the  window  panel  with an approved cleaning solvent. (2) Inspect    the    rubber    channel    for    weather cracks     and     other     damage.          Replace defective rubber channel. (3) Inspect   the   panels   for   dents,   bends,   and other    damage.        Repair    or    replace    as necessary. (4) Replace all cracked or broken glass. c. Installation. (1) Start the rubber channel (fig.  52) along the side of the window opening. (2) Fit  the  narrow  edge  of  the  rubber  channel over    the    edge    of    the    door    panel    and continue     the     strip     around     the     window opening and back to the starting point with a 1/4-inch overlap. 83